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Last updated: 17 September 2021
Statuts:Enquête Officielle
Date:vendredi 2 juin 2017
Heure:15:18
Type/Sous-type:Silhouette image of generic AN2 model; specific model in this crash may look slightly different
Antonov TVS-2MS
Compagnie:SibNIA
Immatriculation: RA-2099G
Numéro de série: 1G73-40
Année de Fabrication: 1966
Heures de vol:328
Cycles:880
Moteurs: 1 Honeywell TPE331-12UHR
Equipage:victimes: 0 / à bord: 2
Passagers:victimes: 0 / à bord: 8
Total:victimes: 0 / à bord: 10
Dégats de l'appareil: Substantiels
Lieu de l'accident:Ulan Bator-Chinggis Khaan International Airport (ULN) (   Mongolie)
Phase de vol: Au décollage (TOF)
Nature:Démonstration
Aéroport de départ:Ulan Bator-Chinggis Khaan International Airport (ULN/ZMUB), Mongolie
Aéroport de destination:?
Détails:
An Antonov TVS-2MS aircraft impacted the ground during takeoff from Ulan Bator-Chinggis Khaan International Airport in Mongolia. The ten occupants were not injured, but the aircraft was substantially damaged.
The aircraft was on a sales trip to Mongolia at the time of the accident. Eight passengers were due to be taken on a flight out of Ulan Bator. The aircraft was fueled with 950 kg of fuel.
Flaps were set at 20°, according to the crew, and the aircraft was cleared for takeoff from runway 32. After lifting off the runway, the aircraft went into an immediate climb and flaps were retracted at an altitude of 40-50 m.
Shortly afterwards the aircraft pitched up and entered a right bank with increasing roll rate. The aircraft lost altitude and impacted terrain between the runway and the taxiway. The right main gear and lower and upper right wings impacted the ground first, causing the undercarriage and wings to collapse.

The TVS-2MS was an Antonov 2T that was converted in 2013 with a TPE331 turbine engine instead of the original Shvetzov ASH-62IR radial piston engine.

Probable Cause:

Conclusion:
The aircraft accident with UEMOB RA-2099G took place because of its entering the stall mode during takeoff with the values of weight and alignment exceeding the established limits.
The actual value of alignment at takeoff was 37% with a 33% limit.

Accident investigation:
cover
Investigating agency: MAK
Status: Investigation completed
Duration: 109 days (4 months)
Accident number: final report
Download report: Final report

Sources:
» MAK


Photos

photo of Antonov-TVS-2MS-RA-2099G
accident date: 02-06-2017
type: Antonov TVS-2MS
registration: RA-2099G
photo of Antonov-TVS-2MS-RA-2099G
accident date: 02-06-2017
type: Antonov TVS-2MS
registration: RA-2099G
 
Les informations ci-dessus ne représentent pas l'opinion de la 'Flight Safety Foundation' ou de 'Aviation Safety Network' sur les causes de l'accident. Ces informations prélimimaires sont basées sur les faits tel qu'ils sont connus à ce jour.
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