Accident Boeing 737-3M8 N681MA, Sunday 11 December 1994

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Date:	Sunday 11 December 1994
Time:	16:35 LT
Type:	Boeing 737-3M8
Owner/operator:	Markair
Registration:	N681MA
MSN:	24376/1717
Year of manufacture:	1989
Total airframe hrs:	17725 hours
Engine model:	CFMI CFM56-3
Fatalities:	Fatalities: 0 / Occupants: 121
Other fatalities:	0
Aircraft damage:	None
Category:	Accident
Location:	Anchorage, AK - United States of America
Phase:	En route
Nature:	Unknown
Departure airport:	, AK (KANC)
Destination airport:	Seattle, WA (KSEA)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE FLIGHT EXPERIENCED AN UNCOMMANDED PITCH UP DURING AN EN ROUTE CLIMB WITH THE B SYSTEM AUTOPILOT ENGAGED. A FLIGHT ATTENDANT WORKING IN THE REAR CABIN AREA SUSTAINED A FRACTURE TO HER RIGHT ANKLE. REPLACEMENT OF THE B SYSTEM CHANNEL AUTOPILOT ELEVATOR ACTUATOR ULTIMATELY FIXED THE PROBLEM.

Probable Cause: THE FAILURE OF THE B SYSTEM CHANNEL AUTOPILOT ELEVATOR ACTUATOR.

Accident investigation: