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Last updated: 10 December 2019
Statuts:Enquête Officielle
Date:jeudi 16 mai 2013
Type/Sous-type:Silhouette image of generic MA60 model; specific model in this crash may look slightly different
Xian MA60
Compagnie:Myanma Airways
Immatriculation: XY-AIQ
Numéro de série: 0808
Année de Fabrication: 2010
Heures de vol:3457
Moteurs: 2 Pratt & Whitney Canada PW127J
Equipage:victimes: 0 / à bord: 4
Passagers:victimes: 0 / à bord: 51
Total:victimes: 0 / à bord: 55
Dégats de l'appareil: Substantiels
Lieu de l'accident:Mong Hsat Airport (MOG) (   Birmanie (Myanmar))
Phase de vol: A l'atterrissage (LDG)
Nature:Transport de Passagers Nat.
Aéroport de départ:Heho Airport (HEH/VYHH), Birmanie (Myanmar)
Aéroport de destination:Mong Hsat Airport (MOG/VYMS), Birmanie (Myanmar)
Numéro de vol: 646
A Xian MA60 passenger plane, registered XY-AIQ, sustained damage in a runway excursion accident at Mong Hsat Airport (MOG), Myanmar. There were 55 persons on board, two were injured.
The airplane operated on a domestic flight from Yangon (RGN) to Mong Hsat (MOG) via Heho (HEH) and return. The flight left Heho on the return leg at 11:10. The first officer, who was on line training, was Pilot Flying on this leg.
When the flight arrived near Mong Hsat the weather was fine with a visibility of about 8 km. The aircraft touched down on runway 12 with an indicated airspeed (IAS) of 144 knots. The airplane could not be stopped and overran the runway at an IAS of 40 knots. It collided with a tree stump and crossed a drainage ditch located 110 m from the runway end. The aircraft turned 80 degrees left and came to rest with a collapsed left hand main landing gear.
Mong Hsat (also written as Monghsat), has a single 5000 ft (1500 m) runway 12/30.

Probable Cause:

Primary Cause
- During landing roll FO retracted PIA to GI position, its remain above Ground Idle position (36.8/ 36.6) degree. After (18) seconds flap position changed to retract and both engines torque start to increase.
- Aircraft IAS unable to rapid decelerate during crews applied braking.
Secondary Cause
- Both crews are not initiated power lever reversing position.
- Crews need multi-crew operation. (sic)

» Eleven Myanmar
» The New Light of Myanmar, 17 May 2013

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Ce plan montre l'aéroport de départ ainsi que la supposée destination du vol. La ligne fixe reliant les deux aéroports n'est pas le plan de vol exact.
La distance entre Heho Airport et Mong Hsat Airport est de 256 km (160 miles).

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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