<< >> NASA ASRS Report 884415, April 2010

MD80 flight crew climbing out of 10;000 ft discovered their electric nose down trim from the yoke switches is inoperative. Alternate trim worked normally but crew elected to return to their departure airport. The aircraft had been written up for the same problem two weeks prior.

Attributes
ACN	884415
Time
Date	201004
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Component
Aircraft Component	Elevator Trim System
Person 1
Function	First Officer Pilot Not Flying
Person 2
Function	Pilot Flying Captain
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Climbing through 10000 ft; captain was unable to trim nose down using the control wheel trim switches and I was unable to as well on the first officer's trim switches. The alternate trim wheel worked normal. Returned for a normal landing. Maintenance informed us of a previous write-up of the primary trim system and removed the aircraft from service.

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Original NASA ASRS Text

Title: MD80 Flight Crew climbing out of 10;000 FT discovered their electric nose down trim from the yoke switches is inoperative. Alternate trim worked normally but crew elected to return to their departure airport. The aircraft had been written up for the same problem two weeks prior.

Narrative: Climbing through 10000 FT; Captain was unable to trim nose down using the control wheel trim switches and I was unable to as well on the First Officer's trim switches. The alternate trim wheel worked normal. Returned for a normal landing. Maintenance informed us of a previous write-up of the primary trim system and removed the aircraft from service.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.