178
1953-SEP-01 · Mont Le Cimet, near Barcelonnette, France

Air France — Flight 178

Air France Flight 178, a Lockheed L-749A Constellation, crashed into the Pelat Massif in the French Alps while en route from Paris to Nice. The aircraft was on the first leg of a long-haul journey to Saigon when it deviated significantly from its planned course for unknown reasons. While initiating a descent in the vicinity of local storms, the aircraft struck Mont Le Cimet at approximately 9,400 feet, roughly 500 feet below the summit. All 42 occupants were killed, including the renowned French violinist Jacques Thibaud.

Aircraft
Lockheed L-749A Constellation
Registration
F-BAZZ
Phase
Cruise
Cause
Controlled Flight Into Terrain (CFIT)
Souls on Board
42
Fatalities
42
Origin → Dest
Paris-Orly Airport, France → Nice Airport, France
Report
Final

Investigation Summary

The flight was scheduled to fly from Paris to Nice via Montélimar, where it was expected to turn southeast toward the coast. Instead, the aircraft was found to have crashed approximately 150 kilometers east of its intended path over Montélimar, at a location roughly 80 km northwest of Nice. At 23:25, the crew requested and received permission to descend from 13,600 feet to 11,500 feet, reporting violent local storms in the area. Five minutes later, witnesses in the valley saw the aircraft strike the mountainside and burst into flames. The crash site was located at an elevation of about 2,870 meters (9,416 feet) on Mont Le Cimet. Rescue efforts were severely hampered by the rugged alpine terrain, with the first parties taking nearly six hours to reach the wreckage on foot.

Final Conclusions

The investigation concluded the cause was controlled flight into terrain (CFIT) resulting from an unexplained navigation error. The aircraft was significantly off course at the time of the crash, positioned in the high Alps rather than the lower terrain of the Rhone valley. While the crew had reported severe weather shortly before the impact, it was never determined why the aircraft had deviated so far to the east of its planned airway.

Photographic Evidence (1)

A Lockheed Constellation, restored by the HARS, making its appearance at the Australian International Airshow and Aerospace & Defence Exposition.
© Hugh Macdonald · Wikimedia Commons

Video Analysis

No video analysis linked for this case file yet.

Airframe & Maintenance

Airframe Hours
6,504
Engines
Wright R-3350 (749C18BD1) Cyclone

Systems & Failure Modes

i

Navigation Equipment

The aircraft deviated from its planned airway via Montélimar for reasons that could not be determined by investigators.

Interesting Facts

  • 01The aircraft was approximately 150 kilometers east of its intended flight path over Montélimar.
  • 02Among the victims was the famous 72-year-old French violinist Jacques Thibaud.
  • 03Renowned French pianist René Herbin was also among the fatalities.
  • 04Thibaud's 1720 Stradivarius violin was destroyed in the accident.
  • 05The aircraft struck the mountain at an altitude of approximately 2,870 meters.
  • 06The flight was the first segment of a multi-stop route to Saigon, with planned stops in Nice, Beirut, Baghdad, Karachi, and Calcutta.

Location

Mont Le Cimet, near Barcelonnette, France · 44.2903, 6.6997

Case File History

  1. New evidenceUpdated investigation summary and findings.

Related Cases

Case ID · af178-1953Last updated · Filed

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