Azerbaijan Airlines Flight 56 was a scheduled domestic passenger flight from Nakhchivan to Baku operated by Azerbaijan Airlines which crashed on 5 December 1995, killing 52 people. The aircraft servicing the flight, a Tupolev Tu-134B-3, experienced engine failure while climbing. The pilots performed a forced landing that required a sharp right turn to avoid an apartment block. The aircraft crashed in the south-western outskirts of Nakhchivan, 3,850 m (2.39 mi) from the airport runway. The crash became Azerbaijan Airlines' deadliest accident and the sixty-first hull loss of Tupolev Tu-134 overall. The airline no longer operates the Tu-134.
The Tu-134B-3 involved in the accident, (c/n 63383), was manufactured on 28 August 1980 and was powered by two Soloviev D-30 turbofan engines. The aircraft had flown 27,500 hours of its 35,000 flight hour life before the crash, was last serviced on 25 July 1995, and an unspecified repair was carried out on 30 March 1993.