Aeroflot Flight 3352 was a Tupolev Tu-154 airline flight on a domestic route from Krasnodar to Novosibirsk, with an intermediate landing in Omsk. While landing at Omsk Airport on Thursday, 11 October 1984, the aircraft crashed into maintenance vehicles on the runway, killing 174 people on board and 4 on the ground. While a chain of mistakes in airport operations contributed to the accident, its major cause was an air traffic controller falling asleep on duty. As of 2022, this remains the deadliest aviation accident on Russian territory. It was also the deadliest aviation accident involving a Tupolev Tu-154 at the time until the crash of Aeroflot Flight 7425 9 months later; as of 2022, it still ranks as the second-deadliest accident involving a Tupolev Tu-154. The tragedy was kept secret for twenty years, until Komsomolskaya Pravda published an article in 2004.

PJSC Aeroflot – Russian Airlines (Russian: ПАО "Аэрофло́т — Росси́йские авиали́нии", PAO Aeroflot — Rossiyskiye avialinii), commonly known as Aeroflot (English: or (listen); Russian: Аэрофлот, transl. "air fleet", pronounced [ɐɛrɐˈfɫot]), is the flag carrier and largest airline of the Russian Federation. The airline was founded in 1923, making Aeroflot one of the oldest active airlines in the world. Aeroflot is headquartered in the Central Administrative Okrug, Moscow, with its hub being Sheremetyevo International Airport.

Before the 2022 Russian invasion of Ukraine, the airline flew to 146 destinations in 52 countries, excluding codeshared services. The number of destinations was significantly reduced after many countries banned Russian aircraft; as of 8 March 2022, Aeroflot flies only to destinations in Russia and Belarus.From its inception to the early 1990s, Aeroflot was the flag carrier and a state-owned enterprise of the Soviet Union (USSR). During this time, Aeroflot grew its fleet to over five thousand domestically made aircraft and expanded to operate a domestic and international flight network of over three thousand destinations throughout the Soviet Union and the globe, making the airline the largest in the world at the time. In addition to passenger flights, Aeroflot also committed to freight operations and serving the state through transportation and military assistance. Following the dissolution of the USSR, the carrier was restructured into an open joint-stock company and embarked on a radical transformation process. Aeroflot shrank the fleet dramatically while at the same time purchasing Western aircraft and newer domestic models and focusing on expanding its international market share before moving to boost its domestic market share.

By the end of 2017, Aeroflot controlled roughly 40% of the air market in Russia. Aeroflot owns Rossiya Airlines – an airline based in Saint Petersburg, Pobeda – a low-cost carrier, and 51% of airline Aurora, based in the Russian Far East. Altogether, Aeroflot and its subsidiaries own 359 aircraft as of 31 December 2019, composed mainly of Airbus, Boeing, and domestic models such as the Sukhoi Superjet 100. Aeroflot also formerly had a cargo subsidiary named Aeroflot-Cargo, though the branch later merged with the parent airline.Aeroflot became a member of SkyTeam in April 2006, making it the first carrier in the former Soviet Union to do so. As of March 2020, the Russian Government owns 51% of Aeroflot through the Federal Agency for State Property Management, with the rest of the shares being free-floating.