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Accident
Last updated: 15 December 2017
Statuts:Enquête Officielle
Date:lundi 24 janvier 1966
Heure:07:02 UTC
Type/Sous-type:Silhouette image of generic B704 model; specific model in this crash may look slightly different
Boeing 707-437
Compagnie:Air-India
Immatriculation: VT-DMN
Numéro de série: 18055/200
Année de Fabrication: 1961
Heures de vol:16188
Moteurs: 4 Rolls-Royce Conway 508
Equipage:victimes: 11 / à bord: 11
Passagers:victimes: 106 / à bord: 106
Total:victimes: 117 / à bord: 117
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Mont Blanc (   France)
Élévation des lieux de l'accident: 4750 m (15584 feet) amsl
Phase de vol: En vol (ENR)
Nature:Transport de Passagers Intern.
Aéroport de départ:Beirut International Airport (BEY/OLBA), Liban
Aéroport de destination:Genève-Cointrin Airport (GVA/LSGG), Suisse
Numéro de vol: 101
Détails:
The Boeing 707, named "Kanchenjunga", operated on a flight from Mumbai (Bombay) to London via Delhi, Beirut and Geneva. The flight to and takeoff from Beirut where routine, except for a failure of the no. 2 VOR. At 07:00 GMT the pilot reported reaching FL190 to Geneva ACC. He was told to maintain that flight level "unless able to descend VMC one thousand on top". The pilot confirmed this and added that they were passing abeam Mont Blanc. The controller noted that the flight wasn't abeam Mont Blanc yet and radioed "you have 5 miles to the Mont Blanc", to which the pilot answered with "Roger." Flight 101 then started to descend from FL190 until it struck the Mont Blanc at an elevation of 15585 feet (4750 m).

Probable Cause:

PROBABLE CAUSE: "The commission concluded that the most likely hypothesis was the following: a) The pilot-in-command, who knew on leaving Beirut that one of the VORs was unserviceable, miscalculated his position in relation to Mont Blanc and reported his own estimate of this position to the controller; the radar controller noted the error, determined the position of the aircraft correctly and passed a communication to the aircraft which, he believed, would enable it to correct its position.; b) For want of a sufficiently precise phraseology, the correction was mis-understood by the pilot who, under the mistaken impression that he had passed the ridge leading to the summit and was still at a flight level which afforded sufficient safety clearance over the top of Mont Blanc, continued his descent."

Accident investigation:
cover
Investigating agency: BEA
Status: Investigation completed
Duration: 1 year and 1 months
Download report: Final report

Sources:
» ICAO Circular Accident Digest 18-I


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Plan
Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Beirut International Airport et Genève-Cointrin Airport est de 2815 km (1759 miles).
Accident location: Approximate; accuracy within a few kilometers.

Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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