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Accident description
Last updated: 21 July 2017
Date:Saturday 14 November 1992
Time:ca 07:12
Type:Silhouette image of generic YK40 model; specific model in this crash may look slightly different
Yakovlev 40
Operator:Vietnam Airlines
Registration: VN-A449
C/n / msn: 9631848
First flight: 1976
Total airframe hrs:4668
Engines: 3 Ivchenko AI-25
Crew:Fatalities: 6 / Occupants: 6
Passengers:Fatalities: 24 / Occupants: 25
Total:Fatalities: 30 / Occupants: 31
Airplane 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
The Yak-40 was approaching Nha Trang when it descended below safe altitude. Also, the aircraft deviated 6 km off the W-13 airway.
The aircraft impacted the top of a ridge, struck some trees and crashed 350 m further on, at a height of 970 m.
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 25c and QFE 758.9. Rescue workers reached the wreckage after eight days.

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» Vietnam Air Accident Inquiry Organisation

Follow-up / safety actions
The following safety recommendations were issued:

1 The Ministry of Defence, the Civil Aviation Administration of Vietnam should take into consideration with a view to increase the minimum obstacle clearance altitudes for routes over mountainous areas along the coast. All airports should be equipped with approach radars.

2 Aviation meteorology industry should in close collaboration with the General Directorate of Hydrometeorology pay more attention to the characteristics of the meteorological forecasts for Aviation industry, inform timely of thunderstorms, low pressure and climate changes in order to take precaution against windshears and vortex which cause violent downdraft and updraft.

3 Control towers at airports near the coast should have adequate meteorological equipment, and the controllers should improve their skills in controlling aircraft during approach.

4 Regarding Nha Trang Airport, if there appears a typhoon 250-400 km away, that typhoon should be watched and kept trace. If the typhoon is within a radius of 200 km or the airport is within the typhoon area, an alert should be initiated and the airport should be closed. Aircraft should be flown at the level of at least 2,000 metres above the highest obstacle along the route W-13 (Da Lat - Nha Trang).

5 The Government should promulgate a decision as soon as possible to form a National Committee for Search and Rescue, and there should be a decree for its operation from central to grassroots levels.


photo of Yakovlev 40 VN-A449
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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).

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Yakovlev 40

  • 1136 built
  • 67th loss
  • 32nd fatal accident
  • 7th worst accident (at the time)
  • 10th worst accident (currently)
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  • 17th worst accident
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