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Accident
Last updated: 23 October 2017
Statuts:
Date:samedi 23 janvier 1971
Heure:11:57
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-DJI
Numéro de série: 17722/94
Année de Fabrication: 1960
Moteurs: 4 Rolls-Royce Conway 508
Equipage:victimes: 0 / à bord: 5
Passagers:victimes: 0 / à bord: 0
Total:victimes: 0 / à bord: 5
Dégats de l'appareil: Détruit
Conséquences: Written off (damaged beyond repair)
Lieu de l'accident:Bombay-Santacruz Airport (BOM) (   Inde)
Phase de vol: Au décollage (TOF)
Nature:Entrainement
Aéroport de départ:Bombay-Santacruz Airport (BOM/VABB), Inde
Aéroport de destination:?
Détails:
The Boeing, named "Nandi Devi", ran off the side of the runway while performing a 3-engined takeoff (engine no. 4 out). The no. 3 and no. 4 engines struck a mound of 9 feet high, 188 feet from the runway and were torn off. The aircraft caught fire.

During a three-engine practice takeoff the check pilot applied full takeoff thrust on no .2 and no. 3 engines. The aircraft accelerated on two engines and when a speed of 85 kt was attained the pilot experienced little difficulty in keeping directional control of the aircraft. Thereafter, the pilot applied thrust on engine no. 1. The aircraft then went off the runway to the right, no. 3 and 4 engines struck a mound 9 feet high located 188 feet from the edge of the runway and were torn off. The wing structure broke off progressively inward and an intense fire broke out.
The check pilot admitted that he did not follow the normal procedure specified by Boeing for a 3 engine takeoff and that due to an incorrect reading of the airspeed, he tried to get airborne before reaching VR . Since the nose had been lifted prematurely, nose wheel steering could not be used and control of the aircraft using rudder alone could not be maintained when power on no . 1 engine was applied .

Probable Cause:

PROBABLE CAUSE:
1) Accident due to loss of control during an attempted three engine takeoff.
2) The loss of control was due to the pilot not following the correct procedure as specified in the approved flight manual.

Sources:
» Civil aircraft accidents 1971 / Ministry of Tourism and Civil Aviation, CAD, ASD


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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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Boeing 707

  • 858 built
  • 34ème loss
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