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Last updated: 21 October 2019
Statuts:Enquête Officielle
Date:mercredi 15 janvier 1986
Heure:10:26
Type/Sous-type:Silhouette image of generic B732 model; specific model in this crash may look slightly different
Boeing 737-2A8 Advanced
Compagnie:Indian Airlines
Immatriculation: VT-EGD
Numéro de série: 22280/671
Année de Fabrication: 1980-05-29 (5 years 8 months)
Moteurs: 2 Pratt & Whitney JT8D-17A
Equipage:victimes: 0 / à bord: 6
Passagers:victimes: 0 / à bord: 122
Total:victimes: 0 / à bord: 128
Dégats de l'appareil: Substantiels
Conséquences: Repaired
Lieu de l'accident:Tiruchirappalli-Civil Airport (TRZ) (   Inde)
Phase de vol: En approche (APR)
Nature:Transport de Passagers Nat.
Aéroport de départ:Madras Airport (MAA/VOMM), Inde
Aéroport de destination:Tiruchirappalli-Civil Airport (TRZ/VOTR), Inde
Numéro de vol:IC529
Détails:
Indian Airlines flight IC529 was a domestic flight from Madras to Tiruchirappalli, India. Weather conditions at the destination were below minima. The pilot descended below Minimum Descent Altitude (MDA) and carried out a tight circling approach, remaining close to the runway. During a tight left turn for finals to runway 27 the pilot was not able to align the aircraft with the runway. A go around was executed during which the left wing contacted the runway surface due to an excessive bank angle close to the ground.
The flight diverted back to Madras were the aircraft landed without incident.

The commander of the flight in question reported the following to the Aviation Safety Network: "This aircraft VT-EGD had a history of snags where pilots reported asymmetric spool up and spool down of engines (right engine slow as much as 5 seconds more than left engine). I myself have snagged this twice for this aircraft. On that day I was given to understand that this snag was cleared. The Wx reported was exactly the minima for runway 27. After the instrument approach, we sighted the runway late and requested a visual left hand circle to land approach and flared aircraft with throttles at idle to touch down at 1000 foot marker when the aircraft floated & would not sink, at which time I noticed that the number 2 engine was still at about 50% N1 and aircraft yawed left with control tower straight ahead (from thresh-hold runway 27 the control tower bears 30 degrees left). I initiated a wave-off with a 5 degree bank to head away from control tower, when the bank increased to about 7 degrees as number 1 engine was at 100% but number 2 engine was at 60% when we heard what we thought was the right main gear rolling on the runway for a split second. We presumed there was a gust from the right (the anemometer was unserviceable and the extended approach centre line lights were not turned ON) and reported left hand circle to land down wind again. As we were turning left base, ATC asked us to check our right wing tip. My co-pilot looked out of the side window and turned pale and was speechless. The turn left base was converted to set course to MMV and hand flew straight-in ILS for runway 07 with controls going to manual reversion due hydraulic leak at the star-board aileron PCU jack. Managed to steer aircraft OFF runway on C taxiway in front of old control tower. I had requested my Regional Director Capt. J F Ranji to have the asymmetric spool up of the engines but overnight the engines were removed. "

Probable Cause:

PROBABLE CAUSE: "The pilot attempted landing under weather conditions below minima and flew the aircraft dangerously disregarding the laid down procedures.
Failure on the part of the co-pilot to bring deviations from the laid down procedures to the notice of the commander was a contributory factor."

Sources:
» Accident summary for the year 1986 / Ministry of Transport and Communications, CAD, AIB


Photos

 

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 Madras Airport et Tiruchirappalli-Civil Airport est de 293 km (183 miles).

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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