Menu
Home Explore People Places Arts History Plants & Animals Science Life & Culture Technology
On this page
Bell 206
Utility helicopter family by Bell

The Bell 206 is a family of two-bladed, single- and twin-engined helicopters, manufactured by Bell Helicopter at its Mirabel, Quebec, plant. Originally developed as the Bell YOH-4 for the United States Army's Light Observation Helicopter program, it was not selected by the Army. Bell redesigned the airframe and successfully marketed the aircraft commercially as the five-place Bell 206A JetRanger. The new design was eventually selected by the Army as the OH-58 Kiowa.

Bell also developed a seven-place LongRanger, which was later offered with a twin-engined option as the TwinRanger, while Tridair Helicopters offers a similar conversion of the LongRanger called the Gemini ST. The ICAO-assigned model designation "B06" is used on flight plans for the JetRanger and LongRanger, and the designation "B06T" is used for the twin-engined TwinRangers.

Related Image Collections Add Image
Profiles
1 Image
We don't have any YouTube videos related to Bell 206 yet.
We don't have any PDF documents related to Bell 206 yet.
We don't have any Books related to Bell 206 yet.
We don't have any archived web articles related to Bell 206 yet.

Development

Origins and JetRanger

On October 14, 1960, the United States Navy solicited responses from 25 aircraft manufacturers to a request for proposals (RFP) on behalf of the Army for the Light Observation Helicopter (LOH). Bell entered the competition along with 12 other manufacturers, including Hiller Aircraft and Hughes Tool Co., Aircraft Division.1 Bell submitted the D-250 design, which would be designated as the YHO-4.2 On May 19, 1961, Bell and Hiller were announced as winners of the design competition.34

Bell developed the D-250 design into the Bell 206 aircraft, redesignated as YOH-4A in 1962, and produced five prototype aircraft for the Army's test and evaluation phase. The first prototype flew on December 8, 1962.5 The YOH-4A also came to be known as "The Ugly Duckling" in comparison to the other contending aircraft.6 Following a fly-off of the Bell, Hughes and Fairchild-Hiller prototypes, the Hughes OH-6 was selected in May 1965.7

When the YOH-4A was eliminated by the Army, Bell went about solving the problem of marketing the aircraft. In addition to the image problem, the helicopter lacked cargo space and only provided cramped seating for the planned three passengers. The solution was a redesigned fuselage, sleeker and aesthetically appealing, adding 16 ft3 (0.45 m3) of cargo space in the process.8 A Bell executive contributed to this redesign by drawing on a sketch two lines extending the fuselage to where it meets the tail.9 The redesign was designated Bell 206A, and Bell President Edwin J. Ducayet named it the JetRanger, denoting an evolution from the popular Model 47J Ranger.

Bell Helicopter ended production of the Bell 206B-3 version in 2010.1011 In 2011, used 206B-3s sold for around $1.4 million depending upon the equipment and configuration.12 Bell intends for the Bell 505 Jet Ranger X to replace the 206 five-seat versions from around 2015 and compete with the Robinson R66.13

LongRanger

The 206L LongRanger is a stretched variant with seating for seven. The fuselage, stretched a total of 30 inches (760 mm), adds two rear-facing seats between the front and rear seats. Since 1975, Bell has produced more than 1,700 LongRangers across all variant types. In 1981, a military version, the 206L TexasRanger was released. The original 206L used an Allison 250-C20B engine, and a series of model upgrades replaced this engine with more powerful versions; the 206L-1 used a 250-C28, and the 206L-3 and 206L-4 used the 250-C30P.

In both applications, the 250-C30P is derated from 650 hp for takeoff and 501 hp continuous. The 206L-3 is transmission-limited to 435 hp for take-off, and the 206L-4 is transmission-limited to 495 hp. The derating of the C30P produces an advantage in hot-day and high-altitude operations as it can produce the rated horsepower at higher altitudes and temperatures where applications that use the maximum rating of the engine at sea level suffer accelerated performance deterioration with increases in temperature and altitude. The 206L-3 and L-4 have not been offered in a twin configuration under those model designations.

In 2007, Bell announced an upgrade program for the 206L-1 and 206L-3 which is designed to modify the aircraft to the 206L-4 configuration; modified aircraft are designated 206L-1+ and 206L-3+. Modifications include strengthened airframe structural components (including a new tailboom), improved transmission, upgraded engine for the L-1, all of which result in a maximum gross weight increase of 300 pounds and increased performance.14

Production of the 206L-4 ended in June 2017 with over 3,800 LongRangers built.15

Gemini ST and TwinRanger

The TwinRanger name dates from the mid-1980s when Bell developed the Bell 400 TwinRanger, but it never entered production.16

In 1989, Tridair Helicopters began developing a twin-engine conversion of the LongRanger, the Gemini ST. The prototype's first flight was on January 16, 1991, while full FAA certification was awarded in November. Certification covers the conversion of LongRanger 206L-1s, L-3s and L-4s to Gemini ST configuration.17 In mid-1994 the Gemini ST was certificated as the first Single/Twin aircraft, allowing it to operate either as a single or twin engine aircraft throughout all phases of flight.18

The Bell 206LT TwinRanger was a new-build production model equivalent to Tridair's Gemini ST, and was based on the 206L-4. Thirteen 206LTs were built, the first being delivered in January 1994, and the last in 1997. The TwinRanger was replaced in Bell's lineup by the mostly-new Bell 427.19

Operational history

The first Bell 206A flew on January 10, 1966, and the aircraft was revealed later that month at the Helicopter Association of America (HAA) convention. On October 20, 1966, the JetRanger received FAA certification. Delivery of the JetRanger to customers began on January 13, 1967, with the first aircraft being purchased by Harry Holly, CEO of the Hollymatic Corporation and previous owner of a Bell Ranger.20 In 1968, the United States Navy selected the 206A as its primary trainer, the TH-57 Sea Ranger. The Army also eventually selected the 206A for a light observation helicopter as the OH-58 Kiowa.

The basic shape and design of the JetRanger remained unchanged since 1967, but Bell introduced the 206B JetRanger II in 1971. In 1977, the 206B-3 JetRanger III was introduced with its modified tail rotor and more powerful engine. The JetRanger is popular with news media for traffic and news reporting. The LongRanger is commonly used as an air ambulance and as a corporate transport. On September 1, 1982, pilots H. Ross Perot, Jr. and Jay Coburn departed Dallas, Texas in the "Spirit of Texas", a Bell 206L-2 (N3911Z). They returned on 30 September, 29 days and 3 hours later, completing the first around-the-world helicopter flight.21

The Bell 206B was first introduced to the Canadian market shortly after its certification in 1967. Its early adoption was driven by the booming resource industries of the time, particularly in oil and gas exploration, mining, and forestry. Its light weight, combined with the ability to land in rugged, remote locations, made it an ideal tool for transporting geologists, surveyors, and equipment to otherwise inaccessible areas of Canada's vast wilderness.

In the 1970s and 1980s, the JetRanger became a critical part of exploration in northern Canada, including the Yukon, Northwest Territories, and Arctic regions, where harsh weather conditions and rough terrain demanded a helicopter that could perform in all environments. The Bell 206B's durability and low operating cost also made it a favorite for these long, sometimes dangerous missions.22

In 1983, Australian businessman Dick Smith became the first helicopter pilot to complete a solo trip around the world in 260 flight hours. During the trip, he landed his 206B-3 (S/N 3653; VH-DIK) on prepositioned container ships to refuel between Japan and the Aleutian Islands.

In 1993, the U.S. Army chose the Bell 206B-3 as the winner of the New Training Helicopter competition, to serve as its primary training helicopter, the TH-67 Creek. The number of TH-67s being divested by the Army is too small to impact civilian markets.23

On July 22, 1994, Ron Bower landed his 206B-3 (N206AJ) at Hurst, Texas, setting a new record for around-the-world flight by a helicopter. Bower had departed on June 24 and returned 24 days, 4 hours, 36 minutes and 24 seconds later, averaging 35.62 knots (40.99 mph, 65.97 km/h).24 Bower had added a 91-US-gallon (340 L) auxiliary fuel tank, which doubled the JetRanger III's range.25

Notable accidents and incidents

On August 1, 1977, famous U-2 spy plane pilot Francis Gary Powers was piloting a helicopter for KNBC Channel 4 over West Los Angeles, California, when the aircraft crashed, killing him and cameraman George Spears. They had been video recording brush fires in Santa Barbara County in the station's helicopter and were leaving the area.26

On August 27, 1990, musician Stevie Ray Vaughan, pilot Jeff Brown, and three members of Eric Clapton's crew, Bobby Brooks, Nigel Browne, and Colin Smythe, were killed in a 206B crash.27

On October 25, 1991, a Bell 206 carrying rock music concert promoter Bill Graham, his girlfriend Melissa Gold, and pilot Steve Kahn crashed into a transmission tower west of Vallejo, California, killing everyone on board.2829 The cause of the accident was determined to be the pilot's intentional flight into known adverse weather conditions.30[importance?]

On January 12, 1994, an Agusta-Bell 206A-1 crashed while attempting to land at the helipad of the Central Command headquarters in Neve Yaakov, killing all four occupants on board, including IDF Major General Nehemiah Tamari.3132

On March 9, 2009, Bangladesh Army aviation unit Bell 206L flown by pilot Lt Col MD Shahidul Islam and co-pilot Major Saif crashed at Rouha in Kalihati sub-district. The helicopter was carrying General Officer Commanding of 55 Infantry Division and Jessore Area Commander Maj Gen Rafiqul Islam. Maj Gen Islam and pilot Lt Col Islam died in the crash while co-pilot Major Saif sustained serious injuries.33

On August 15, 2010, a Bell 206B of the Missouri State Highway Patrol crashed after it ran out of fuel, killing pilot Sergeant Joseph George Schuengel.34

On August 20, 2014, Guatemala's Chief of the General Staff of the Armed Forces Rudy Ortiz was killed when his Bell 206 crashed.35

On February 11, 2019, Brazilian journalist Ricardo Boechat and the pilot were killed when Bell 206B, PT-HPG, crashed into a truck while attempting an emergency landing on a highway.36

Variants

Civilian

Bell 206 Five YOH-4A prototypes, for flight evaluation in the Army's LOH program (1963). Bell 206A Initial production version, powered by an Allison 250-C18 turboshaft engine. FAA-certified in 1966. Selected as the OH-58A Kiowa in 1968. Agusta-Bell 206A License-built in Italy. Bell 206A-1 OH-58A aircraft that are modified for FAA civil certification.37 Agusta-Bell 206A-1 License-built in Italy. Bell 206B Upgraded Allison 250-C20 engine.38 Agusta-Bell 206B License-built in Italy. Bell 206B-2 Bell 206B models upgraded with Bell 206B-3 improvements.39 Bell 206B-3 Upgraded Allison 250-C20J engine and added 2 inches (51 mm) to tail rotor diameter for yaw control.40 Bell 206L LongRanger Stretched, seven-seat configuration, powered by an Allison 250-C20B turboshaft engine. Bell 206L-1 LongRanger II Higher-powered version, powered by an Allison 250-C28 turboshaft engine. Bell 206L-1+ LongRanger Bell modifications, including 250-C30P engine, to upgrade aircraft to 206L-4 configuration. Bell 206L-3 LongRanger III Powered by an Allison 250-C30P turboshaft engine. Bell 206L-3+ LongRanger Bell modifications to upgrade aircraft to 206L-4 configuration. Bell 206L-4 LongRanger IV Improved version, 250-C30P engine and transmission upgrade. Bell 206LT TwinRanger Twin-engined conversions and new-builds of the 206L; replaced by the Bell 427. Bell 407 based on the 206L with four-blade rotor system. Bell 417 upgraded 407 with larger engine; project canceled. Cardoen Cb 206L-III Chilean modified LongRanger III with narrow forward fuselage and flat-plate cockpit windows. At least two converted, with first flight in 1989.41 HESA Shahed 278 An Iranian re-hash of Bell 206 components. Aurora Flight Sciences Tactical Autonomous Aerial Logistics System test platform

Military

Bell 206AS Export version for the Chilean Navy. Bell CH-139 JetRanger Canadian military designation for the Bell 206B-3. Hkp 6A Swedish Army designation for the Agusta-Bell 206A. 21 units manufactured in Italy, used as training, liaison, light transport, scout and anti-tank helicopters armed with ATGMs.42 Hkp 6B Swedish Navy designation for the Agusta-Bell 206A. 10 units manufactured in Italy, used as anti-submarine helicopters, armed with depth charges. This variant was equipped with emergency inflatable floats.43 OH-58 Kiowa Light observation helicopter that replaced the OH-6A Cayuse. TH-57A Sea Ranger 40 commercial Bell 206A aircraft purchased as the primary U.S. Navy helicopter trainer in January 1968 for training prospective U.S. Navy, U.S. Marine Corps, U.S. Coast Guard and select NATO/Allied helicopter pilots.44 206L TexasRanger proposed export military version. One demonstrator was built (1981). TH-57B 45 commercial Bell 206B-3 helicopters purchased by the US Navy in 1989 as replacements for the TH-57A for primary training under visual flight rules. TH-57C Sea Ranger 71 commercial Bell 206B-3 helicopters purchased by the US Navy beginning prior to 1985 with cockpits configured for advanced training under instrument flight rules. TH-57D Planned upgrade program to convert US Navy TH-57B and TH-57C aircraft to a single standard digital cockpit.45 This program never materialized in operational aircraft. TH-67 Creek 137 commercial Bell 206B-3s purchased in 1993 as the primary and instrument helicopter trainer for the US Army at Fort Novosel, Alabama. 35 in VFR configuration and 102 in IFR configuration. The US Army currently has 181 units, of which 121 are in VFR configuration and 60 are in IFR configuration. All TH-67s display US registrations ("N" numbers) and are operated as public use aircraft. OH-4 Brazilian Air Force designation for an observation variant of the Model 206B-3. Originally designated LH-4.46 VH-4 Brazilian Air Force designation for a VIP transport variant of the Model 206B-3.47 HU-6 Brazilian Navy designation for a utility variant of the Model 206B-3.48 IH-6/IH-6A/IH-6B Brazilian Navy designations for trainer variants of the Model 206B-3. The IH-6 and IH-6A were originally designated HI-6 and HI-6A, respectively.49 H.8 (Thai: ฮ.๘) Royal Thai Armed Forces designation for the Model 206B-3.50 H.PhT.1 (Thai: ฮ.ผฑ.๑) Royal Thai Armed Forces designation for the Model 206B-2 used for aerial survey.51

Operators

The Bell 206 has been popular for all types of uses both commercial and private.

Military and government

 Albania  Argentina  Bangladesh  Brazil  Bulgaria  Brunei  Cameroon  Chile  Colombia  Democratic Republic of the Congo  Croatia

 Cyprus

 Dominican Republic  Ecuador  Finland  Greece  Guatemala  Guyana  Iran  Iraq  Israel  Italy  Jamaica  Japan  Latvia  Lesotho  North Macedonia  Mexico  Morocco  Oman  Pakistan  Peru  Poland  Slovenia  Sri Lanka  Republic of China (Taiwan)  Thailand  Turkey  Uganda  United States  Venezuela  Yemen  Zambia

Former operators

 Australia  Canada  Chile  Indonesia  Jamaica  Macedonia
  • Macedonia Air Brigade128
 Malta  Serbia  Sweden

Specifications (206B Jetranger II)

Data from Jane's All The World's Aircraft, 1976-1977133

General characteristics

  • Crew: 1
  • Capacity: 4 passengers
  • Length: 38 ft 9.5 in (11.824 m) including rotors
  • Fuselage length: 31 ft 2 in (9.50 m)
  • Height: 9 ft 6.5 in (2.908 m)
  • Interior dimensions: 7 ft 2 in (2.18 m) length, by 4 ft 2 in (1.27 m) width, by 4 ft 3 in (1.30 m) height, plus 16 cu ft (453 L) baggage compartment
  • Empty weight: 1,455 lb (660 kg)
  • Max takeoff weight: 3,200 lb (1,451 kg)
  • Powerplant: 1 × Allison 250-C20 turboshaft engine, 400 hp (298 kW)
  • Main rotor diameter: 33 ft 4 in (10.16 m)
  • Main rotor area: 873 sq ft (81.1 m2)
  • Blade section: – NACA 0012 mod (11.3%)134

Performance

  • Maximum speed: 122 kn (140 mph, 226 km/h) at MTOW (sea level)
  • Maximum speed at 5,000 ft: 116 kn (133 mph; 215 km/h) at MTOW
  • Cruise speed: 120 kn (140 mph, 220 km/h) at MTOW, 5,000 feet
  • Range: 337 nmi (388 mi, 624 km) at MTOW, 5,000 feet, cruise speed, no reserves
  • Service ceiling: 20,000 ft (6,100 m) at MTOW
  • Rate of climb: 1,350 ft/min (6.9 m/s)
  • Disk loading: 4 lb/sq ft (20 kg/m2)
  • Power/mass: 0.09 hp/lb (0.15 kW/kg)

Notable appearances in media

Main article: Aircraft in fiction § Bell 206

  • Two Bell 206 helicopters were used in the 1980s British TV show Treasure Hunt, one to carry the presenter/crew and one for communications relay. The presenter/crew helicopter featured prominently throughout the show. Several years after the show this helicopter was on an unrelated flight when it ditched and sank with no fatalities.135

See also

  • Aviation portal

Related development

Aircraft of comparable role, configuration, and era

Related lists

Citations

Bibliography

  • Elliot, Bryn (March–April 1997). "Bears in the Air: The US Air Police Perspective". Air Enthusiast. No. 68. pp. 46–51. ISSN 0143-5450.
  • Elliott, Bryn (May–June 1999). "On the Beat: The First 60 Years of Britain's Air Police, Part Two". Air Enthusiast (81): 64–69. ISSN 0143-5450.
  • Hoyle, Craig (December 10–16, 2013). "World Air Forces Directory". Flight International. 184 (5419): 24–51. ISSN 0015-3710.
  • Hoyle, Craig (December 9–15, 2014). "World Air Forces Directory". Flight International. 186 (5468): 24–55. ISSN 0015-3710.
  • Lambert, Mark, ed. (1991). Jane's All The World's Aircraft 1991–92. Coulsdon, UK: Jane's Defence Data. ISBN 0-7106-0965-5.
Wikimedia Commons has media related to Bell 206.

References

  1. Remington, Steve. "Collect Air". Archived from the original on June 21, 2009. Retrieved June 28, 2009. "The Cessna CH-1 Helicopter". CollectAir.com https://web.archive.org/web/20090621043635/http://www.collectair.com/cessna.html ↩

  2. Beechy, Robert. "US Army Aircraft Acquisition Programs". Archived from the original on November 18, 2006. Retrieved September 20, 2006. "U.S Army Aircraft Acquisition Programs". Uncommon Aircraft 2006, November 18, 2005. Accessed on September 19, 2006 https://web.archive.org/web/20061118064815/http://fire.prohosting.com/hud607/uncommon/reference/usa/army.html ↩

  3. See Light Observation Helicopter. The Navy, who was assisting the Army in the selection phase, recommended the Hiller Model 1100, while the Army team preferred the Bell D-250, and then the 1100. The Selection Board selected both aircraft. Afterwards, the acting Army Chief of Staff directed the Selection Board to include the Hughes 369 in the fly-off competition. /wiki/Light_Observation_Helicopter ↩

  4. Spangenberg, George A. "Archived copy" (PDF). Archived from the original on September 10, 2008. Retrieved September 10, 2008.{{cite web}}: CS1 maint: archived copy as title (link) George A. Spangenberg Oral History. spangenberg.org. Judith Spangenberg-Currier, ed. pp. 187–190. Accessed on April 29, 2008 https://web.archive.org/web/20080910202517/http://www.georgespangenberg.com/gasoralhistory.pdf ↩

  5. Visschedijk, lJohan. "Bell 206 JetRanger".[usurped] 1000AircraftPhotos.com. 16 October 2003. Accessed on 19 September 2006 https://web.archive.org/web/20060914180524/http://www.1000aircraftphotos.com/HistoryBriefs/Bell206.htm ↩

  6. Visschedijk, lJohan. "Bell 206 JetRanger".[usurped] 1000AircraftPhotos.com. 16 October 2003. Accessed on 19 September 2006 https://web.archive.org/web/20060914180524/http://www.1000aircraftphotos.com/HistoryBriefs/Bell206.htm ↩

  7. Spenser, Jay P. "Bell Helicopter". Whirlybirds, A History of the US Helicopter Pioneers, p. 263. University of Washington Press, 1998. ISBN 0-295-98058-3 /wiki/ISBN_(identifier) ↩

  8. Aastad, Andy. "The Introduction to the JetRanger" Archived September 10, 2008, at the Wayback Machine. Rotor Magazine. Helicopter Association International. Winter 2006–2007. Accessed on 29 April 2008 http://rotormagazine.org/Portals/24/pdf/winter2006_7/32.pdf ↩

  9. George Larson [1] Archived March 21, 2010, at the Wayback Machine "Farewell to an Icon: the Bell JetRanger 206". Aviation Week blog, January 25, 2008 http://www.aviationweek.com/aw/blogs/business_aviation/index.jsp?plckController=Blog&plckScript=blogScript&plckElementId=blogDest&plckBlogPage=BlogViewPost&plckPostId=Blog:2f16318d-d960-4e49-bc9f-86f1805f2c7fPost:5a807181-b9e1-4121-8d94-39b5e5291162 ↩

  10. Bell Product Line Streamlined[usurped]. Bell Helicopter, January 24, 2008 https://web.archive.org/web/20101230002639/http://www.bellhelicopter.com/en/company/pressReleases/PR_08_0124_StreamlineProductLine.cfm ↩

  11. Last Bell LongRanger Rolls Off Production Line. AIN online, July 10, 2017. https://www.ainonline.com/aviation-news/business-aviation/2017-07-10/last-bell-longranger-rolls-production-line?amp ↩

  12. "Bell 206A JetRanger for Sale". Archived from the original on April 15, 2012. Retrieved November 13, 2014. http://www.globalplanesearch.com/helicopters/turbine/single/bell/206_jetranger.htm?sort=price ↩

  13. Maher, Guy. "Bell gives 505 JetRanger update". Vertical, 21 July 2014. Accessed: 21 July 2014. Archived on 21 July 2014[usurped]. http://www.verticalmag.com/news/article/Bellgives505JetRangerXupdate ↩

  14. Kocurek, Mark. "206L Upgrade Program"[permanent dead link‍]. Rotorbreeze Magazine Bell Helicopter, July 2007 http://www.bellhelicopter.textron.com/en/support/pdf/rb/rb_jul07.pdf ↩

  15. Last Bell LongRanger Rolls Off Production Line. AIN online, July 10, 2017. https://www.ainonline.com/aviation-news/business-aviation/2017-07-10/last-bell-longranger-rolls-production-line?amp ↩

  16. Frawley, Gerard: The International Directory of Civil Aircraft, 2003–2004, p. 43. Aerospace Publications Pty Ltd, 2003. ISBN 1-875671-58-7 /wiki/ISBN_(identifier) ↩

  17. Frawley, Gerard: The International Directory of Civil Aircraft, 2003–2004, p. 43. Aerospace Publications Pty Ltd, 2003. ISBN 1-875671-58-7 /wiki/ISBN_(identifier) ↩

  18. Frawley, Gerard: The International Directory of Civil Aircraft, 2003–2004, p. 43. Aerospace Publications Pty Ltd, 2003. ISBN 1-875671-58-7 /wiki/ISBN_(identifier) ↩

  19. Frawley, Gerard: The International Directory of Civil Aircraft, 2003–2004, p. 43. Aerospace Publications Pty Ltd, 2003. ISBN 1-875671-58-7 /wiki/ISBN_(identifier) ↩

  20. Aastad, Andy. "The Introduction to the JetRanger" Archived September 10, 2008, at the Wayback Machine. Rotor Magazine. Helicopter Association International. Winter 2006–2007. Accessed on 29 April 2008 http://rotormagazine.org/Portals/24/pdf/winter2006_7/32.pdf ↩

  21. "List of records established by the '206L-2 Long Ranger'". Fédération Aéronautique Internationale. Archived from the original on October 18, 2001. Retrieved October 19, 2008. https://web.archive.org/web/20011018045449/http://records.fai.org/rotorcraft/aircraft.asp?id=360 ↩

  22. "Bell 206B Jet Ranger". https://www.columbiahelicopters.ca/bell-206b-jet-ranger ↩

  23. Host, Pat (April 2015). "Army's aviation restructuring not to affect civil helicopter market". Rotor & Wing. Archived from the original on April 12, 2015. Retrieved April 12, 2015. http://accessintelligence.imirus.com/Mpowered/book/vrw15/i452/p38 ↩

  24. https://web.archive.org/web/20011018054626/http://records.fai.org/rotorcraft/aircraft.asp?id=606 "List of records established by the '206B-3 Jet Ranger III'". Fédération Aéronautique Internationale. Accessed on October 19, 2008 https://web.archive.org/web/20011018054626/http://records.fai.org/rotorcraft/aircraft.asp?id=606 ↩

  25. Kocks, Kathleen. "Around the World in 24 days, 4:36:24"[usurped]. Rotor & Wing. October 1994. Accessed October 19, 2008 https://web.archive.org/web/20010302113540/http://www.bowerhelicopter.com/atw/around1.html ↩

  26. "Capt. Francis Gary Powers". Smithsonian National Air and Space Museum. Smithsonian Institution. Retrieved May 8, 2020. https://airandspace.si.edu/support/wall-of-honor/capt-francis-gary-powers ↩

  27. "The Death of Stevie Ray". srvarchive.com. Archived from the original on February 19, 2018. Retrieved October 20, 2019. https://web.archive.org/web/20180219025412/http://www.srvarchive.com/deathofsrv ↩

  28. NTSB (April 27, 1993). "NTSB Identification: LAX92LA029". ntsb.gov. NTSB. Retrieved June 16, 2015. https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20001212X18336&key=1&queryId=b34d69b9-68ea-4f08-b92b-3a981b73f098&pgno=3&pgsize=50 ↩

  29. Bruce Lambert (November 27, 1991). "Bill Graham, Rock Impresario, Dies at 60 in Crash". The New York Times. Retrieved June 16, 2015. https://www.nytimes.com/1991/10/27/us/bill-graham-rock-impresario-dies-at-60-in-crash.html ↩

  30. Check Six (December 22, 2022). "Bill Graham's Stairway to Heaven". check-six.com. Retrieved December 22, 2022. http://www.check-six.com/Crash_Sites/Graham-N3456M.htm ↩

  31. "Israeli General Killed in Copter Crash". Los Angeles Times. January 13, 1994. Retrieved September 15, 2024. https://www.latimes.com/archives/la-xpm-1994-01-13-mn-11425-story.html ↩

  32. "Accident Agusta-Bell 206A-1 Sayfan, Wednesday 12 January 1994". asn.flightsafety.org. Retrieved September 15, 2024. https://asn.flightsafety.org/wikibase/420325 ↩

  33. https://www.thedailystar.net/news-detail-79207 https://www.thedailystar.net/news-detail-79207 ↩

  34. "Sergeant Joseph George Schuengel". The Officer Down Memorial Page (ODMP). Retrieved March 20, 2025. https://www.odmp.org/officer/20548-sergeant-joseph-george-schuengel ↩

  35. PanAm Post Staff (August 22, 2014). "Helicopter Crash Kills Guatemala's Army Chief of Staff". PanAm Post. Archived from the original on August 27, 2014. Retrieved November 13, 2014. http://panampost.com/panam-staff/2014/08/22/helicopter-crash-kills-guatemalas-army-chief-of-staff/ ↩

  36. "Ricardo Boechat, jornalista, morre aos 66 anos em queda de helicóptero em SP". G1 (in Brazilian Portuguese). February 11, 2019. Archived from the original on February 11, 2019. Retrieved February 11, 2019. https://g1.globo.com/sp/sao-paulo/noticia/2019/02/11/ricardo-boechat-jornalista-morre-aos-66-anos-em-queda-de-helicoptero-em-sp.ghtml ↩

  37. "TYPE CERTIFICATE DATA SHEET NO. H2SW, Revision 42" (PDF). Federal Aviation Administration (faa.gov). June 27, 2006. Archived from the original (PDF) on October 26, 2006. Retrieved July 4, 2016. https://www.webcitation.org/5JuiZJjx7?url=http://www.airweb.faa.gov/Regulatory_and_Guidance_library%5CrgMakeModel.nsf/0/A428E9EAD4EA73078625719B004B0BAE/%24FILE/H2sw.pdf ↩

  38. Ron and Shannon Bower (May 1, 2003). "Bell 206: Still Ringing True". Aviation Today (aviationtoday.com). Archived from the original on October 23, 2006. https://web.archive.org/web/20061023072823/http://www.aviationtoday.com/cgi/rw/show_mag.cgi?pub=rw&mon=0503&file=0503bell206.htm ↩

  39. Ron and Shannon Bower (May 1, 2003). "Bell 206: Still Ringing True". Aviation Today (aviationtoday.com). Archived from the original on October 23, 2006. https://web.archive.org/web/20061023072823/http://www.aviationtoday.com/cgi/rw/show_mag.cgi?pub=rw&mon=0503&file=0503bell206.htm ↩

  40. Ron and Shannon Bower (May 1, 2003). "Bell 206: Still Ringing True". Aviation Today (aviationtoday.com). Archived from the original on October 23, 2006. https://web.archive.org/web/20061023072823/http://www.aviationtoday.com/cgi/rw/show_mag.cgi?pub=rw&mon=0503&file=0503bell206.htm ↩

  41. Lambert 1991, p. 30. ↩

  42. "HKP 6 – Agusta Bell 206A JetRanger (1968–2004)". avrosys.nu. Archived from the original on January 31, 2013. Retrieved January 27, 2013. http://www.avrosys.nu/aircraft/Heli/506hkp6/506HKP6.htm ↩

  43. "HKP 6 – Agusta Bell 206A JetRanger (1968–2004)". avrosys.nu. Archived from the original on January 31, 2013. Retrieved January 27, 2013. http://www.avrosys.nu/aircraft/Heli/506hkp6/506HKP6.htm ↩

  44. "TH-57" (PDF). U.S. Navy History. Archived (PDF) from the original on June 14, 2007. Retrieved March 31, 2018. https://www.history.navy.mil/bin/imageDownload?image=/content/dam/nhhc/research/histories/naval-aviation/naval-aircraft/current-aircraft-inventory/pdf/th-57.pdf ↩

  45. "US Navy Plans Digital TH-57 Fleet" Archived April 22, 2007, at the Wayback Machine VTOL News, January 2007. http://www.vtol.org/news/issues107.html#us ↩

  46. "Brazilian Military Aircraft Designations". designation-systems.net. Retrieved March 16, 2025. https://designation-systems.net/non-us/brazil.html ↩

  47. "Brazilian Military Aircraft Designations". designation-systems.net. Retrieved March 16, 2025. https://designation-systems.net/non-us/brazil.html ↩

  48. "Brazilian Military Aircraft Designations". designation-systems.net. Retrieved March 16, 2025. https://designation-systems.net/non-us/brazil.html ↩

  49. "Brazilian Military Aircraft Designations". designation-systems.net. Retrieved March 16, 2025. https://designation-systems.net/non-us/brazil.html ↩

  50. "Thai Military Aircraft Designations". designation-systems.net. Retrieved March 20, 2025. https://designation-systems.net/non-us/thailand.html ↩

  51. "Thai Military Aircraft Designations". designation-systems.net. Retrieved March 20, 2025. https://designation-systems.net/non-us/thailand.html ↩

  52. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  53. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  54. "Army Bell 206B Jetranger III AE-366". © 2006-2013 Airplane-Pictures.net. Archived from the original on December 22, 2014. Retrieved January 26, 2013. http://www.airplane-pictures.net/photo/216968/ae-366-argentina-army-bell-206b-jetranger-iii/ ↩

  55. Rivas, Santiago (January 25, 2018). "Argentina receives first five AB 206 helicopters". IHS Jane's 360. Buenos Aires. Archived from the original on January 26, 2018. Retrieved January 26, 2018. https://archive.today/20180126104558/http://www.janes.com/article/77373/argentina-receives-first-five-ab-206-helicopters ↩

  56. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  57. "World Air Forces 2011–12" (PDF). flightglobal.com. Archived (PDF) from the original on May 9, 2013. Retrieved January 17, 2014. http://www.flightglobal.com/airspace/media/reports_pdf/emptys/90190/world-air-forces-2011-2012.pdf ↩

  58. "Bangladesh Army Aviation Accepts Two Dauphin Helicopters". malaysiaflyingherald.wordpress.com. January 23, 2013. Archived from the original on February 21, 2014. Retrieved January 17, 2014. http://malaysiaflyingherald.wordpress.com/2013/01/23/bangladesh-army-avaition-accepts-two-dauphin-helicopters/ ↩

  59. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  60. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  61. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  62. "World Air Forces 2021". FlightGlobal. December 4, 2020. Retrieved January 5, 2021. https://www.flightglobal.com/download?ac=75345 ↩

  63. "World Air Forces 2021". FlightGlobal. December 4, 2020. Retrieved January 5, 2021. https://www.flightglobal.com/download?ac=75345 ↩

  64. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  65. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  66. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  67. "BELL 206 – Aviación Policial de la Policía Nacional". National Police of Colombia. January 23, 2016. Archived from the original on April 14, 2017. Retrieved April 13, 2017. https://www.policia.gov.co/componentes/bell-206 ↩

  68. "World Air Forces 2022". Flightglobal. 2022. Retrieved July 18, 2022. https://www.flightglobal.com/reports/world-air-forces-directory-2022/146695.article ↩

  69. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  70. "Policija Fleet". https://www.helis.com/database/org/Croatian-Police/cn ↩

  71. "Current Aircraft Inventory Cyprus Air Command – Aeroflight". March 2017. Retrieved January 2, 2023. http://www.aeroflight.co.uk/user/in-service/cyprus-af-current-aircraft-inventory.htm ↩

  72. Hoyle, Craig (2023). "World Air Forces 2024". FlightGlobal. Retrieved April 4, 2024. https://www.flightglobal.com/download?ac=98881 ↩

  73. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  74. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  75. Petrova, Alla (November 27, 2012). "The government today ordered the Finance Ministry to allocate the State Border Guard LVL 0.84 million from the budget's emergency funds for the procurement of two helicopters". The Baltic Course. Archived from the original on May 24, 2013. Retrieved January 26, 2013. http://www.baltic-course.com/eng/transport/?doc=66597 ↩

  76. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  77. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  78. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  79. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  80. "Iraqi air force opens pilot training school". flightglobal.com. Archived from the original on December 13, 2014. Retrieved December 4, 2014. http://www.flightglobal.com/news/articles/picture-iraqi-air-force-opens-pilot-training-school-218210/ ↩

  81. Hoyle Flight International 9–15 December 2014, p. 42 ↩

  82. "Elbit extends military pilot training deals with Israel". flightglobal.com. Archived from the original on December 13, 2014. Retrieved December 12, 2014. http://www.flightglobal.com/news/articles/elbit-extends-military-pilot-training-deals-with-israel-381014/ ↩

  83. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  84. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  85. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  86. J-HangarSpace. "Japan Coast Guard: Aircraft Data File". Archived from the original on February 11, 2017. Retrieved June 27, 2016. http://www.j-hangarspace.jp/japan-coast-guard-where-are-they-now ↩

  87. Petrova, Alla (November 27, 2012). "The government today ordered the Finance Ministry to allocate the State Border Guard LVL 0.84 million from the budget's emergency funds for the procurement of two helicopters". The Baltic Course. Archived from the original on May 24, 2013. Retrieved January 26, 2013. http://www.baltic-course.com/eng/transport/?doc=66597 ↩

  88. "Helicopters from Finland accepted into service in Latvia". baltic-course.com. Archived from the original on February 1, 2014. Retrieved January 17, 2014. http://www.baltic-course.com/eng/transport/?doc=70277 ↩

  89. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  90. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  91. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  92. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  93. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  94. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  95. "Lotnictwo w Policji – Główny Sztab Policji – Policja.pl". Archived from the original on April 22, 2021. Retrieved September 8, 2020. https://web.archive.org/web/20210422200737/https://www.policja.pl/pol/kgp/glowny-sztab-policji/47520,Lotnictwo-w-Policji.html ↩

  96. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  97. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  98. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  99. "Bell Textron Canada TH-67A Creek". taiwanairpower.org. Archived from the original on January 25, 2013. Retrieved January 26, 2013. http://www.taiwanairpower.org/army/th67a.html ↩

  100. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  101. http://www.tpad.police.go.th/news1.php Archived April 17, 2015, at the Wayback Machine Royal Thai Police http://www.tpad.police.go.th/news1.php ↩

  102. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  103. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  104. "Chicago Police Department / Cook County Sheriff's Police Task Force" (PDF). Chicago Police. https://home.chicagopolice.org/wp-content/uploads/2014/12/HELICOPTER-Feature-Sheet.pdf ↩

  105. "Aviation – San Juan County Sheriff's Office". sjcso.com. Archived from the original on October 18, 2016. Retrieved October 17, 2016. https://web.archive.org/web/20161018231838/http://sjcso.com/aviation/ ↩

  106. "LAPD Equipment". lapdonline.org. Archived from the original on September 21, 2013. Retrieved September 1, 2014. http://www.lapdonline.org/lapd_equipment ↩

  107. "Aircraft Inquiry". registry.faa.gov. Retrieved May 17, 2021. https://registry.faa.gov/aircraftinquiry/Search/NNumberResult?NNumberTxt=164K ↩

  108. "Aircraft Inquiry". registry.faa.gov. Retrieved May 17, 2021. https://registry.faa.gov/aircraftinquiry/Search/NNumberResult?NNumberTxt=41EW ↩

  109. "Special Operations". City of Memphis. Archived from the original on May 17, 2021. Retrieved May 17, 2021. https://web.archive.org/web/20210517143219/https://www.memphistn.gov/government/police-department/special-operations/ ↩

  110. "OPD Helicopter (@OPDABLE1) – Twitter". twitter.com. Archived from the original on October 14, 2017. Retrieved November 9, 2017. https://twitter.com/OPDABLE1?lang=en ↩

  111. "Air support (helicopter) unit". kingcounty.gov. Archived from the original on June 2, 2020. Retrieved June 8, 2020. https://www.kingcounty.gov/depts/sheriff/about-us/enforcement/specialized/helicopter.aspx ↩

  112. "Special Operations Section | New Jersey State Police". www.njsp.org. Retrieved August 22, 2020. https://www.njsp.org/division/homeland-security/special-operations.shtml#aviation ↩

  113. "Sergeant Joseph George Schuengel". The Officer Down Memorial Page (ODMP). Retrieved March 20, 2025. https://www.odmp.org/officer/20548-sergeant-joseph-george-schuengel ↩

  114. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  115. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  116. "N33PP (1983 BELL 206L-3 owned by UNITED STATES DEPARTMENT OF INTERIOR) Aircraft Registration". FlightAware. Retrieved January 12, 2021. http://flightaware.com/resources/registration/N33PP ↩

  117. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  118. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  119. "World Air forces p. 55". Flight International. flightglobal. December 2014. ↩

  120. "World Air Forces 2021". FlightGlobal. December 4, 2020. Retrieved January 5, 2021. https://www.flightglobal.com/download?ac=75345 ↩

  121. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  122. "Aircraft Histories RAN". Navy.gov.au. Archived from the original on February 13, 2014. Retrieved January 29, 2013. http://www.navy.gov.au/fleet/aircraft/aircraft-histories ↩

  123. "Bell CH-139 JET RANGER". canadianwings.com. Archived from the original on June 16, 2013. Retrieved January 17, 2014. https://web.archive.org/web/20130616143350/http://www.canadianwings.com/Aircraft/aircraftDetail.php?JET-RANGER-4 ↩

  124. "Bell 206 in Canadian Coast Guard". Helis.com. https://www.helis.com/database/modelorg/1089/ ↩

  125. "A 40 años del Comando de Aviación de Ejército". Archived from the original on June 29, 2012. Retrieved November 13, 2014. http://modocharlie.com/2010/10/a-40-anos-del-comando-de-aviacion-de-ejercito/ ↩

  126. "P-3001 Bell 206B-2 JetRanger C/N 1868". helis.com. Retrieved March 7, 2021. https://www.helis.com/database/cn/41747/ ↩

  127. "JDF "Rotary wing" previous fleet". jdfmil.org. Archived from the original on May 11, 2013. Retrieved January 26, 2013. https://web.archive.org/web/20130511034946/http://www.jdfmil.org/equipment/aircraft/aircraft_home.php ↩

  128. "WAF 2014" (PDF). Flightglobal Insight. 2014. Archived (PDF) from the original on January 7, 2016. Retrieved December 12, 2014. https://img.en25.com/Web/flightglobal/%7B88f2f053-6c3d-4ab4-a297-0b453358a560%7D_FC055_PREM_201312.pdf?elq=&elqCampaignId= ↩

  129. "Air Wing, Armed Forces of Malta". aeroflight.co.uk. Archived from the original on June 12, 2011. Retrieved January 26, 2013. https://web.archive.org/web/20110612020615/http://www.aeroflight.co.uk/waf/malta/af/maltaf2.htm ↩

  130. "Serbian Interior Ministry Air Wing". aeroflight.co.uk. Archived from the original on July 11, 2009. Retrieved January 29, 2013. http://www.aeroflight.co.uk/waf/yugo/serbia/pol/serbia-police-home.htm ↩

  131. "HKP 6 – Agusta Bell 206A JetRanger (1968–2004)". avrosys.nu. Archived from the original on January 31, 2013. Retrieved January 27, 2013. http://www.avrosys.nu/aircraft/Heli/506hkp6/506HKP6.htm ↩

  132. "HKP 6 – Agusta Bell 206A JetRanger (1968–2004)". avrosys.nu. Archived from the original on January 31, 2013. Retrieved January 27, 2013. http://www.avrosys.nu/aircraft/Heli/506hkp6/506HKP6.htm ↩

  133. Taylor, John W. R. (1977). Jane's All The World's Aircraft (1976-1977 ed.). Croydon, England: Jane's Information Services. p. 227. ↩

  134. Lednicer, David. "The Incomplete Guide to Airfoil Usage". m-selig.ae.illinois.edu. Retrieved April 16, 2019. https://m-selig.ae.illinois.edu/ads/aircraft.html ↩

  135. "AAIB Bulletin No: 9/95" (PDF). Air Accidents Investigation Branch. https://assets.publishing.service.gov.uk/media/5422fdece5274a1317000975/Agusta_Bell_206B_Jet_Ranger_II__G-BHXU_09-95.pdf ↩