A DC9-50 in climb at FL180 declared an emergency and diverted due to of main electric stabilizer tri...

Attributes
ACN	527979
Time
Date	200111
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : msp.airport
State Reference	MN
Altitude	msl bound lower : 2000 msl bound upper : 18000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : m98.tracon tracon : a80.tracon
Operator	common carrier : air carrier
Make Model Name	DC-9 50
Operating Under FAR Part	Part 121
Flight Phase	climbout : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 3000
ASRS Report	527979
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : multi engine pilot : commercial
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : declared emergency flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Environmental Factor
Primary Problem	Aircraft

Narrative:

Electric trim failure on departure. Accomplished a circuit breaker reset -- no effect to the problem. Returned to msp after declaring an emergency. Maintenance reported that it was the second report in 3 days. Callback conversation with reporter revealed the following information: the reporter stated the loss of stabilizer trim was limited to the main electric trim as alternate trim was operative. The reporter said this was the second report in 3 days of the main electric trim failure. The reporter stated maintenance took the airplane OTS but never communicated the corrective action or component failure.

Original NASA ASRS Text

Title: A DC9-50 IN CLB AT FL180 DECLARED AN EMER AND DIVERTED DUE TO OF MAIN ELECTRIC STABILIZER TRIM. CAUSE UNKNOWN.

Narrative: ELECTRIC TRIM FAILURE ON DEP. ACCOMPLISHED A CIRCUIT BREAKER RESET -- NO EFFECT TO THE PROB. RETURNED TO MSP AFTER DECLARING AN EMER. MAINT RPTED THAT IT WAS THE SECOND RPT IN 3 DAYS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE LOSS OF STABILIZER TRIM WAS LIMITED TO THE MAIN ELECTRIC TRIM AS ALTERNATE TRIM WAS OPERATIVE. THE RPTR SAID THIS WAS THE SECOND RPT IN 3 DAYS OF THE MAIN ELECTRIC TRIM FAILURE. THE RPTR STATED MAINT TOOK THE AIRPLANE OTS BUT NEVER COMMUNICATED THE CORRECTIVE ACTION OR COMPONENT FAILURE.

Data retrieved from NASA's ASRS site as of July 2007 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.

A DC9-50 in climb at FL180 declared an emergency and diverted due to of main electric stabilizer trim. Cause unknown.