Runway excursion Serious incident Airbus A310-304 F-OHCZ, Saturday 4 March 2006

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Date:	Saturday 4 March 2006
Time:
Type:	Airbus A310-304
Owner/operator:	S7 Airlines
Registration:	F-OHCZ
MSN:	475
Year of manufacture:	1988
Engine model:	GE CF6-80C2A2
Fatalities:	Fatalities: 0 / Occupants:
Other fatalities:	0
Aircraft damage:	None
Category:	Serious incident
Location:	München-Franz Josef Strauss Airport (MUC/EDDM) - Germany
Phase:	Take off
Nature:	Passenger - Scheduled
Departure airport:	München-Franz Josef Strauss Airport (MUC/EDDM)
Destination airport:
Investigating agency:	BFU
Confidence Rating:	Information verified through data from accident investigation authorities

Narrative:
The A310 drifted to the right on takeoff when the nr.1 engine spooled up faster than the nr.2 engine. Takeoff was abandoned and the crew attempted a second takeoff. The airplane again drifted to the right and went off the runway 250 m after commencing takeoff, at a speed of 30kts. It went through a snowy field and came to rest 60 m further on.
It appears that the runway was covered with wet snow. It also appeared that several systems on the airplane were not working. The Engine Trim was out of use due to a failure in the Power Management Computer 2.

Accident investigation: