Investigation Summary
The flight was a special transport mission carrying a delegation of senior Laotian politicians and military leaders to attend the 55th anniversary celebration of the second division of the Lao People's Army. The aircraft, a Ukrainian-built twinjet with Manufacturer Serial Number (MSN) 470 98 982, was manufactured in 2007 and delivered to Laos in 2009. It departed Vientiane-Wattay Airport and proceeded toward Phonsavan. As the aircraft transitioned to its final approach for Xieng Khouang Airport, it descended below the required glide path. The landing gear struck trees in the village of Nadee, leading to a loss of control and impact in a forested area. While three people were initially pulled from the wreckage alive, two later succumbed to their injuries, leaving a single survivor. The loss of the Minister of National Defense and the Minister of Public Security was described as a significant blow to the country's security apparatus, leading to a three-day period of national mourning. Although initial reports attributed the crash to a technical error, the event remained under official investigation until it was confirmed as a Controlled Flight Into Terrain (CFIT).
Final Conclusions
The crash was officially determined to be a Controlled Flight Into Terrain (CFIT). While initial reports attributed the accident to a 'technical error,' the investigation concluded that the flight crew mismanaged the approach by descending below the required glide path. The aircraft's landing gear clipped trees approximately 1.5 to 2 kilometers from the runway threshold, leading to a loss of control and impact in a wooded area.
Photographic Evidence (1)
Video Analysis
No video analysis linked for this case file yet.
Systems & Failure Modes
Antonov An-74TK-300
A Ukrainian-built twinjet transport aircraft. Unlike the standard An-74 which uses the Coanda effect with over-wing engines, the TK-300 variant features engines mounted on under-wing pylons for improved fuel efficiency.
Interesting Facts
- 01The aircraft was an Antonov An-74TK-300, a specialized version of the An-74 with engines mounted under the wings rather than over them.
- 02The aircraft (MSN 470 98 982) was manufactured in 2007.
- 03The crash killed the Deputy Prime Minister, the Minister of National Defense, and the Minister of Public Security of Laos.
- 04The aircraft was carrying 17 people: 6 crew members and 11 passengers.
- 05The aircraft was relatively new to the fleet, having been ferried to Vientiane on October 26, 2009.
- 06There was only one long-term survivor of the crash, a nurse; two other initial survivors died from their injuries shortly after the accident.
Safety Actions & Advisories
National Mourning
The Laotian government declared a three-day period of national mourning following the loss of several high-ranking members of the Politburo and Cabinet.