Question: What kind of engine did Aerolinee Itavia Flight 870 have?

Context paragraphs:
British Airways Flight 268: British Airways Flight 268 was a regularly scheduled flight from Los Angeles LAX airport to London Heathrow LHR.  The flight took off at about 9:24 p.m. on 20 February 2005.  When the plane, a four engine Boeing 747–436, was around 300 feet into the air, flames burst out of its number 2 engine, a result of engine surge.  The pilots shut the engine down.  Air traffic control expected the plane to return to the airport and deleted the flight plan.  However, after consulting with the airline dispatcher, the pilots decided to set off on their flight plan "and get as far as we can" rather than dump 70 tonnes of fuel and land.  The 747 is certified to fly on three engines.  Having reached the East Coast, the assessment was that the plane could continue safely.  The cross-Atlantic journey encountered less favourable conditions than predicted.  Upon reaching the UK, believing there to be insufficient usable fuel to reach their destination, the captain declared an emergency and landed at Manchester Airport.

HG-3 (rocket engine): The HG-3 was a liquid-fuel cryogenic rocket engine which was designed for use on the upper stages of Saturn rockets in the post-Apollo era.  Designed in the United States by Rocketdyne, the HG-3 was to have burned cryogenic liquid hydrogen and liquid oxygen propellants, with each engine producing 1400.7 kN of thrust during flight.  The engine was designed to produce a specific impulse ("I") of 451 seconds in a vacuum, or 280 seconds at sea level.  Developed from Rocketdyne's J-2 engine used on the S-II and S-IVB stages, the engine was intended to replace the J-2 on the upgraded S-II-2 and S-IVB-2 stages intended for use on the Saturn MLV, Saturn IB-B and Saturn V/4-260 rockets, with a sea-level optimised version, the HG-3-SL, intended for use on the Saturn INT-17.  The engine was cancelled, however, during the post-Apollo drawdown when development of the more advanced Saturn rockets ceased, and never flew, although the engine was later used as the basis for the design of the RS-25 Space Shuttle main engine.

Qantas Flight 32: Qantas Flight 32 was a Qantas scheduled passenger flight that suffered an uncontained engine failure on 4 November 2010 and made an emergency landing at Singapore Changi Airport.  The failure was the first of its kind for the Airbus A380, the world's largest passenger aircraft.  It marked the first aviation occurrence involving an Airbus A380.  On inspection it was found that a turbine disc in the aircraft's No. 2 Rolls-Royce Trent 900 engine (on the port side nearest the fuselage) had disintegrated.  In addition to destruction of the engine, this caused damage to the nacelle, wing, fuel system, landing gear, flight controls, the controls for engine No. 1 and a fire in the left inner wing fuel tank that self-extinguished.  The failure was determined to have been caused by the breaking of a stub oil pipe which had been manufactured improperly.

Itigi: ""ITIGI" redirects here.  For the plane shot down in 1980, see Aerolinee Itavia Flight 870"

Turbine engine failure: Turbine engines in use on today’s turbine-powered aircraft are very reliable.  Engines operate efficiently with regularly scheduled inspections and maintenance.  These units can have lives ranging in the thousands of hours of operation.  However, engine malfunctions or failures occasionally occur that require an engine to be shut down in flight.  Since multi-engine airplanes are designed to fly with one engine inoperative and flight crews are trained to fly with one engine inoperative, the in-flight shutdown of an engine typically does not constitute a serious safety of flight issue.  Following an engine shutdown, a precautionary landing is usually performed with airport fire and rescue equipment positioned near the runway.  Once the airplane lands, fire department personnel assist with inspecting the airplane to ensure it is safe before it taxis to its parking position.  Turboprop-powered aircraft and turboshaft-powered helicopters are also powered by turbine engines and are subject to engine failures for many similar reasons as jet-powered aircraft.  In the case of an engine failure in a helicopter, it is often possible for the pilot to enter autorotation, using the unpowered rotor to slow the aircraft's descent and provide a measure of control, usually allowing for a safe emergency landing even without engine power.

Aerolinee Itavia: Aerolinee Itavia SpA was one of the principal private Italian airlines in the 1960s until its collapse in the early 1980s, after the infamous Aerolinee Itavia Flight 870 crash, also known as the Ustica disaster.

Core lock: Core lock is a jet engine failure that can happen on aircraft in flight, after an engine stops working for a period.  When a jet engine has a flameout, the cooling air no longer circulates normally.  If an aircraft is moving slowly, the sizes of some engine parts may change more quickly than others, such that they no longer fit together as designed.  If this happens, the engine may seize.  On an internal combustion engine that is not subject to extreme flight conditions, this may not be a problem.  Since aircraft jet engines are built to exacting standards, however, core lock makes it difficult for pilots to windmill restart or perform an APU-assisted engine restart.

Aerolinee Itavia Flight 870: Aerolinee Itavia Flight 870 (IH 870, AJ 421) was an Italian commercial flight operated by a McDonnell Douglas DC-9-15 which crashed into the Tyrrhenian Sea between Ponza and Ustica, killing all on board, while en route from Bologna to Palermo in 1980.  Known in the Italian media as the Ustica Massacre ("Strage di Ustica") – Ustica being a small island near the crash-site – the disaster led to numerous investigations, legal actions, and accusations, and continues to be a source of speculation, including claims of conspiracy by the Italian government and others.  Former Italian President Francesco Cossiga attributed the cause of the crash to a missile fired from a French Navy aircraft, despite contrary evidence presented in the Tribunale di Roma's 1994 report.  On 23 January 2013 Italy's top criminal court ruled that there was "abundantly" clear evidence that the flight was brought down by a missile.  To date, this remains the deadliest aviation incident involving a DC-9-10/15 series.

The Rubber Wall (1991 film): The Rubber Wall (Italian: "Il muro di gomma" ) is a 1991 Italian drama film directed by Marco Risi.  The film, which deals with the Aerolinee Itavia Flight 870 disaster, entered the competition at the 48th Venice International Film Festival.

McDonnell Douglas DC-9: The McDonnell Douglas DC-9 (initially known as Douglas DC-9) is a twin-engine, single-aisle jet airliner.  It was first manufactured in 1965 with its maiden flight later that year.  The DC-9 was designed for frequent, short flights.  The final DC-9 was delivered in October 1982.

Supporting paragraphs: Aerolinee Itavia Flight 870 McDonnell Douglas DC-9
Answer: twin-engine