Date:	Saturday 26 October 1996
Time:	20:44
Type:	Yakovlev Yak-40K
Owner/operator:	Tyumenaviatrans
Registration:	RA-88257
MSN:	9711252
Year of manufacture:	1977
Total airframe hrs:	21765 hours
Cycles:	16947 flights
Engine model:	Ivchenko AI-25
Fatalities:	Fatalities: 5 / Occupants: 37
Aircraft damage:	Destroyed, written off
Category:	Accident
Location:	Khanty-Mansiysk Airport (HMA) -   Russia
Phase:	Landing
Nature:	Passenger - Scheduled
Departure airport:	Tyumen Airport (TJM/USTR)
Destination airport:	Khanty-Mansiysk Airport (HMA/USHH)
Confidence Rating:	Information verified through data from accident investigation authorities

Narrative:
Weather conditions were bad: heavy snowstorm, 1400 m visibility and a 200 m cloud base as the Yak-40 approached the airport of Khanty-Mansiysk. On finals the pilots mistook the helicopter parking area perimeter lights for the runway approach lights. On landing the airplane collided consecutively with TyumenAviaTrans Mi-8Ts RA-22313, RA-25144 and RA-25939.

Causes:
1) lack of information from the crew about the deterioration of visibility below the aerodrome minimum during the landing approach;
2) continuation of the landing approach in conditions of weather change below the aerodrome visibility minimum;
3) turning on the lighting of the heliport, which significantly exceeded the power of the runway lights, in conditions of limited visibility (snow charge), which provoked the crew to erroneously perceive it as the runway lights in the absence of the possibility of effective control over the movement of the aircraft after the flight over the OPRS beacon.

Soviet Transports
Flight International
ICAO Adrep Summary 2/97 (#93)
Scramble 211

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