Of thirty-six rockets launched, three failed, with a fourth placing its payload into an incorrect, but recoverable orbit. The first failure occurred during the third flight, on 12 March 2000, when a software error resulted in the premature cutoff of the second stage, leaving the ICO F-1 satellite unable to reach orbit.6
On 29 June 2004, during the launch of Apstar 5, the upper stage shut down 54 seconds early due to a wiring fault,7 leaving the satellite in a lower than planned orbit. The spacecraft raised itself to the correct orbit by means of its onboard manoeuvring engines, at the expense of fuel intended for stationkeeping once in the correct orbit.
On 30 January 2007, a Zenit-3SL exploded on the launch pad after an engine failure caused by debris in the turbopump. The payload on that flight was the NSS-8 communications satellite for SES New Skies.8 This caused a considerable amount of downtime whilst damage to the launch platform was repaired.
On 1 February 2013, during the launch of Intelsat-27, a Zenit-3SL launch vehicle suffered a premature engine shutdown, as the rocket strayed from its lift-off trajectory, plunging into the Pacific Ocean shortly after launch.9
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"Zenit-3SL". Launch Vehicles. National Space Agency of Ukraine. Archived from the original on September 27, 2007. Retrieved 2009-04-14. https://web.archive.org/web/20070927012634/http://www.nkau.gov.ua/nsau/catalogNEW.nsf/0/EFB7A4C2121BE0F6C2256E8B0044EBA8?OpenDocument&Lang=E ↩
Kyle, Ed (2006-10-30). "2000 Launch Stats". Space Launch Report. Retrieved 2009-04-14. http://www.spacelaunchreport.com/log2000.html ↩
Kyle, Ed (2006-10-30). "2004 Launch Stats". Space Launch Report. Retrieved 2009-04-14. http://www.spacelaunchreport.com/log2004.html ↩
Kyle, Ed (2007-12-26). "2007 Launch Stats". Space Launch Report. Retrieved 2009-04-14. http://www.spacelaunchreport.com/log2007.html ↩
Rhian, Jason (February 5, 2013). "Failure to Sea Launch: Zenit 3SL Racks Up Another Loss – UPDATE". americaspace.com. Retrieved February 5, 2023. https://www.americaspace.com/2013/02/05/failure-to-sea-launch-zenit-3sl-racks-up-another-loss/ ↩