ASN Aircraft accident Xian MA60 XY-AIQ Mong Hsat Airport (MOG)
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Status:Accident investigation report completed and information captured
Date:Thursday 16 May 2013
Type:Silhouette image of generic MA60 model; specific model in this crash may look slightly different
Xian MA60
Operator:Myanma Airways
Registration: XY-AIQ
MSN: 0808
First flight: 2010
Total airframe hrs:3457
Engines: 2 Pratt & Whitney Canada PW127J
Crew:Fatalities: 0 / Occupants: 4
Passengers:Fatalities: 0 / Occupants: 51
Total:Fatalities: 0 / Occupants: 55
Aircraft damage: Substantial
Aircraft fate: Written off (damaged beyond repair)
Location:Mong Hsat Airport (MOG) (   Myanmar)
Phase: Landing (LDG)
Nature:Domestic Scheduled Passenger
Departure airport:Heho Airport (HEH/VYHH), Myanmar
Destination airport:Mong Hsat Airport (MOG/VYMS), Myanmar
Flightnumber: 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)

Runway excursion (overrun)

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

Follow-up / safety actions

MAIB issued 4 Safety Recommendations

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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Heho Airport to Mong Hsat Airport as the crow flies is 256 km (160 miles).

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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