[6] The last serial Tu-154 was delivered to the Russian Defense Ministry on 19 February 2013[7] from the Aviakor factory, equipped with upgraded avionics, a VIP interior, and a communications suite.
[8] The Tu-154 is powered by three rear-mounted, low-bypass turbofan engines arranged similarly to those of the Boeing 727, but it is slightly larger than its American counterpart.
All Tu-154 aircraft models have a relatively high thrust-to-weight ratio, giving the type excellent performance, though at the expense of lower fuel efficiency.
The cabin of the Tu-154, although of the same six-abreast seating layout, gives the impression of an oval interior, with a lower ceiling than is common on Boeing and Airbus airliners.
The anhedral means that Russian airliners have poor lateral stability compared to their Western counterparts, but also are more resistant to Dutch roll tendencies.
Considerably heavier than its predecessor Soviet-built airliner, the Ilyushin Il-18, the Tu-154 was equipped with an oversized landing gear to reduce ground load, enabling it to operate from the same runways.
The aircraft has two six-wheel main bogies fitted with large, low-pressure tires that retract into pods extending from the trailing edges of the wings (a common Tupolev feature), plus a two-wheel nose gear unit.
Soft oleo struts (shock absorbers) provide a much smoother ride on bumpy airfields than most airliners, which very rarely operate on such poor surfaces.
A fourth crew member, a navigator, was soon found to be still needed, and a seat was added on production aircraft, although that workstation was compromised due to the limitations of the original design.
As of June 2021 the aircraft is not flying, and it is unlikely to come back into service, since the government operates a fleet of brand-new, more fuel-efficient jets like the Gulfstream G550 and the Boeing 737 NG.
[30][31] The Tu-154 had crashed into the Black Sea just after takeoff from Sochi, Russia, on 25 December 2016 killing all 92 people on board, including 64 members of the Alexandrov Ensemble, an official army choir of the Russian Armed Forces.
[37] Of the fatal incidents, five resulted from terrorist or military terrorist action (two other wartime losses were non-fatal), several from poor runway conditions in winter (including one in which the airplane struck snow plows on the runway), cargo overloading in the lapse of post-Soviet federal safety standards, and mid-air collisions due to faulty air traffic control.
Other incidents resulted from mechanical problems, running out of fuel on unscheduled routes, pilot errors (including inadequate flight training for new crews), and cargo fires; several accidents remain unexplained.
On 2 January 2011, Russia's Federal Transport Oversight Agency advised airlines to stop using remaining examples of the Tu-154 (B variant) until the fatal fire incident in Surgut had been investigated.
[39] In 2010 there were two fatal losses of the Tu-154 due to pilot error and/or weather conditions (a Polish presidential jet attempting a rural airfield landing in heavy fog, the 2010 Polish Air Force Tu-154 crash, and a Russian-registered plane that suffered engine stall after a crew member accidentally de-activated a fuel transfer pump).