Air Inter Flight 148 was a scheduled passenger flight from Lyon Satolas Airport to Strasbourg Airport in France. On 20 January 1992, the Airbus A320 operating the flight crashed in the Vosges Mountains, France, near Mont Sainte-Odile, while circling to land at Strasbourg Airport. Eighty-seven of the 96 people on board were killed, while the remaining nine were all injured.[1][2]
![]() | This article may be expanded with text translated from the corresponding article in French. (December 2018) Click [show] for important translation instructions.
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![]() F-GGED, the aircraft involved in the accident, seen in January 1991 | |
Accident | |
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Date | 20 January 1992 (1992-01-20) |
Summary | Controlled flight into terrain due to ATC error and pilot error; poor training |
Site | Barr, near Strasbourg Airport, Strasbourg, France[1] 48°25′31″N 007°24′18″E |
Aircraft | |
Aircraft type | Airbus A320-111 |
Operator | Air Inter |
IATA flight No. | IT5148 |
ICAO flight No. | ITF5148 |
Call sign | ITF 148 DA[1] |
Registration | F-GGED |
Flight origin | Lyon Satolas Airport, France |
Destination | Strasbourg Airport, France |
Occupants | 96 |
Passengers | 90 |
Crew | 6 |
Fatalities | 87 |
Injuries | 9 (5 serious, 4 minor) |
Survivors | 9 |
The aircraft, an Airbus A320-111, registration F-GGED, serial number 15, first flew on 4 November 1988, and was delivered to Air Inter on 22 December 1988. At the time of the accident the aircraft had accumulated a total of 6,316 airframe hours.[3][4]
Flight 5148, commanded by 42-year-old Captain Christian Hecquet and 37-year-old First Officer Joël Cherubin,[5] departed Satolas Airport in Lyon, France. While being vectored for a VOR/DME approach to runway 05 at Strasbourg Airport, it crashed at 19:20:33 CET in the mountains at an altitude of 2,620 ft (800 m).[1]
The Bureau of Enquiry and Analysis for Civil Aviation Safety (BEA) found that Flight 5148 crashed because the pilots left the autopilot set in Vertical Speed Mode instead of Flight Path Angle Mode and then set "33" for "3.3° descent angle", resulting in a high descent rate of 3,300 ft (1,000 m) per minute into terrain.[1]
The pilots had no warning of the imminent impact because Air Inter had not equipped its aircraft with a ground proximity warning system (GPWS). It is speculated that this was because Air Inter—facing ferocious competition from France's TGV high-speed trains—may have encouraged its pilots to fly fast at low level (up to 350 kn [650 km/h; 400 mph] below 10,000 ft [3,000 m], while other airlines generally do not exceed 250 kn [460 km/h; 290 mph]), and GPWS systems gave too many nuisance warnings.[6]
The accident occurred at night, under low cloud and with light snow. Emergency response was slow and journalists were the first to find the crash site over four hours later.[6]
Accident investigators recommended 35 changes in their report. Airbus modified the interface of the autopilot so that a vertical speed setting would be displayed as a four-digit number, preventing confusion with the Flight Path Angle mode.[7] The flight data recorder was upgraded so that it was able to withstand higher temperatures and for longer.[1][6] The report also recommended that pilot training for the A320 should be enhanced and that ground proximity warning systems should be installed on them. Air Inter equipped its aircraft with ground proximity warning systems before the investigation was completed.[1][8][9]
The story of the disaster was featured on the ninth season of Cineflix television show Mayday in the episode entitled "The Final Blow" (also known as Air Crash Investigation as episode entitled "Crashed and Missing" or "Doomed to Fail" (S09E07)).[6]
It is featured in season 2, episode 5, of the TV show Why Planes Crash, in an episode called "Sudden Impact".
Aviation accidents and incidents in 1992 (1992) | |
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1991 ◀ ▶ 1993 |