Takeoff aborted due to aileron trim being displaced fully left.

Attributes
ACN	237516
Time
Date	199303
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mdt
State Reference	PA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : gfk
Operator	common carrier : air carrier
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Flight Phase	climbout : takeoff other
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 : 11000 flight time type : 2200
ASRS Report	237516
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

While executing the takeoff roll I noticed the control yoke had a left banking pressure. I then glanced down at the trim and noticed the trim indicator indicated full left trim. The decision was made to abort the takeoff. After taxiing clear of the runway, the trim returned to neutral and appeared to be operating fine. The aircraft was taxied back to the runway 31 runup pad and maintenance was radioed and notified of the occurrence. I told maintenance that the trim was reset and the out of trim situation seemed resolved. After clearing up an additional maintenance problem the takeoff and flight was completed without further complications.

Original NASA ASRS Text

Title: TKOF ABORTED DUE TO AILERON TRIM BEING DISPLACED FULLY L.

Narrative: WHILE EXECUTING THE TKOF ROLL I NOTICED THE CTL YOKE HAD A L BANKING PRESSURE. I THEN GLANCED DOWN AT THE TRIM AND NOTICED THE TRIM INDICATOR INDICATED FULL L TRIM. THE DECISION WAS MADE TO ABORT THE TKOF. AFTER TAXIING CLR OF THE RWY, THE TRIM RETURNED TO NEUTRAL AND APPEARED TO BE OPERATING FINE. THE ACFT WAS TAXIED BACK TO THE RWY 31 RUNUP PAD AND MAINT WAS RADIOED AND NOTIFIED OF THE OCCURRENCE. I TOLD MAINT THAT THE TRIM WAS RESET AND THE OUT OF TRIM SIT SEEMED RESOLVED. AFTER CLRING UP AN ADDITIONAL MAINT PROB THE TKOF AND FLT WAS COMPLETED WITHOUT FURTHER COMPLICATIONS.

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.