Runway excursion Accident Yakovlev Yak-40 LZ-DOK, Tuesday 2 August 1988
ASN logo

Date:Tuesday 2 August 1988
Type:Silhouette image of generic YK40 model; specific model in this crash may look slightly different    
Yakovlev Yak-40
Owner/operator:Hemus Air
Registration: LZ-DOK
MSN: 9620247
Year of manufacture:1976
Engine model:Ivchenko AI-25
Fatalities:Fatalities: 29 / Occupants: 37
Other fatalities:0
Aircraft damage: Destroyed, written off
Location:Sofia-Vrazhdebna Airport (SOF) -   Bulgaria
Phase: Take off
Nature:Passenger - Scheduled
Departure airport:Sofia-Vrazhdebna Airport (SOF/LBSF)
Destination airport:Varna Airport (VAR/LBWN)
At Sofia Airport all civil traffic had been halted because of the departure of the Bulgarian "Air Force One" Tupolev 154, carrying Bulgarian leader Todor Zhivkov. Because of a delay of this flight, the air traffic controller cleared The Hemus Air Yak-40 for takeoff, asking the crew to expedite their departure. Trying to leave in a hurry, the crew forgot to set the trim correctly. Consequently, the aircraft failed to become airborne. It overran runway 09 into a ravine of the Iskar River and burst in flames.
It appeared that the stabilizer was set in the full "Down" position, instead it was supposed to be set between 2.5-3 degrees in "the Up" position.


Soviet Transports
NRC Handelsblad 03.08.1988
Captain Nikola H. Kolev (e-mail 10-8-2014)


  • 19th worst accident in 1988
  • 12th worst accident of this aircraft type
  • 5th worst accident of this aircraft type at the time



photo (c) Kjell Nilsson; Varna Airport (VAR/LBWN); 28 August 1987

Revision history:


The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314