Unfallbericht:Flight 257 departed Calcutta at 11:45 for a flight to Imphal. While positioning for a runway 04 ILS approach, the aircraft crashed into a hill.
|Datum:||16 AUG 1991|
|Baujahr:|| 1977-11-17 (13 years 9 months)|
|Triebwerk:|| 2 Pratt & Whitney JT8D-17|
|Besatzung:||Todesopfer: 6 / Insassen: 6|
|Fluggäste:||Todesopfer: 63 / Insassen: 63|
|Gesamt:||Todesopfer: 69 / Insassen: 69 |
|Konsequenzen:|| Written off (damaged beyond repair)|
|Unfallort:||8 km (5 Meilen) von Imphal Municipal Airport (IMF) (Indien)
|Flugphase:|| Annäherung (APR)|
|Betriebsart:||Inländischer planmäßiger Passagierflug|
|Flug von:||Calcutta-Netaji Subhas Chandra Airport (CCU/VECC), Indien|
|Flug nach:||Imphal Municipal Airport (IMF/VEIM), Indien|
PROBABLE CAUSE: "The accident occurred by reason of a grave error on the part of the Pilot-in-Command in not adhering to the operational flight plan and ILS let down chart and not realizing that his early descent to 10,000 feet and turning right for outbound leg without reporting overhead VOR would result in loss of time
reference and as such misplace him in the hilly terrain. The Pilot-in-Command's action may have been influenced by his extreme familiarity with the terrain".
» Civil aviation aircraft accident summary for the year 1991 (DGAC India)Sample newspaper article from Newspaperarchive.com
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not
display the exact flight path.
Distance from Calcutta-Netaji Subhas Chandra Airport to Imphal Municipal Airport as the crow flies is 599 km (374 miles).
This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.