ASN Aircraft accident Yakovlev Yak-40 VN-A449 Son Trung
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Status:Accident investigation report completed and information captured
Date:Saturday 14 November 1992
Time:07:12
Type:Silhouette image of generic YK40 model; specific model in this crash may look slightly different
Yakovlev Yak-40
Operator:Vietnam Airlines
Registration: VN-A449
MSN: 9631848
First flight: 1976
Total airframe hrs:4668
Cycles:3686
Engines: 3 Ivchenko AI-25
Crew:Fatalities: 6 / Occupants: 6
Passengers:Fatalities: 24 / Occupants: 25
Total:Fatalities: 30 / Occupants: 31
Aircraft damage: Damaged beyond repair
Location:near Son Trung (   Vietnam)
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Ho Chi Minh City-Tan Son Nhat International Airport (SGN/VVTS), Vietnam
Destination airport:Nha Trang Airport (NHA/VVNT), Vietnam
Flightnumber: 474
Narrative:
Vietnam Airlines flight 474 was destroyed when it impacted terrain near Son Trung, Vietnam. Of the 31 occupants, one passenger survived.
The aircraft, a Yak-40, operated on a domestic flight from Ho Chi Minh City to Nha Trang. When descending towards Nha Trang the aircraft went below the minimum safe altitude. Also, the aircraft deviated 6 km off the W-13 airway.
Flying over mountainous terrain, the aircraft impacted the top of a ridge, struck some trees and crashed 350 m further on, at an elevation of 970 m. Rescue workers reached the wreckage after eight days.
Weather reported at Nha Trang was Wind 310° 1 m/s, 3cu at 300 m, 5cu at 500 m and 8sc at 1500 m, temperature 25°c and QFE 758.9.

Classification:
Controlled Flight Into Terrain (CFIT) - Mountain

Sources:
» Soviet Transports
» Flight International
» Vietnam Air Accident Inquiry Organisation


Follow-up / safety actions

issued 5 Safety Recommendations

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Photos

photo of Yakovlev-Yak-40-VN-A449
accident date: 14-11-1992
type: Yakovlev Yak-40
registration: VN-A449
 

Map
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 Ho Chi Minh City-Tan Son Nhat International Airport to Nha Trang Airport as the crow flies is 316 km (198 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

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.
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Yakovlev Yak-40

  • 1136 built
  • 74th loss
  • 33rd fatal accident
  • 7th worst accident (at the time)
  • 10th worst accident (currently)
» safety profile

 Vietnam
  • 18th worst accident
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