<< >> NASA ASRS Report 688872, February 2006

An MD80 on landing at 1500 ft declared an emergency due to primary trim moved uncommanded nose down. Made go around and landed.

Attributes
ACN	688872
Time
Date	200602
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 1500
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tower : zzz.tower
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	688872
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : executed go around flight crew : overcame equipment problem
Consequence	other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On final; primary trim moved uncommanded nose down. Did go around; declared emergency; completed checklist; and landed at destination.

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Original NASA ASRS Text

Title: AN MD80 ON LNDG AT 1500 FT DECLARED AN EMER DUE TO PRIMARY TRIM MOVED UNCOMMANDED NOSE DOWN. MADE GAR AND LANDED.

Narrative: ON FINAL; PRIMARY TRIM MOVED UNCOMMANDED NOSE DOWN. DID GAR; DECLARED EMER; COMPLETED CHKLIST; AND LANDED AT DEST.

Data retrieved from NASA's ASRS site as of January 2009 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.