Commuter has no torque indications on takeoff roll. Takeoff aborted.

Attributes
ACN	247098
Time
Date	199307
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cys
State Reference	WY
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
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 : 6000 flight time type : 3000
ASRS Report	247098
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : rejected takeoff other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Upon takeoff roll at cys, checking power for first officer's leg to den, noted no torque indication. Aborted takeoff and cleared runway. Reviewing after takeoff checklist, noted invertor in off position, apparently accidentally turned off invertor when opening ice vanes. Checked invertors and both operating properly. Returned to gate, requested new release. Continued flight to den, reported to flight operations, filed company incident report. Callback conversation with reporter revealed the following information: reporter states that in the light transport the torque is controled by the invertor, a separate type of generator, which provides power to the gauge to indicate torque. Asked if this was possibly an ergonomic problem, reporter said he has been flying this model for 5 yrs with no problem. Can't really explain why it happened this time.

Original NASA ASRS Text

Title: COMMUTER HAS NO TORQUE INDICATIONS ON TKOF ROLL. TKOF ABORTED.

Narrative: UPON TKOF ROLL AT CYS, CHKING PWR FOR FO'S LEG TO DEN, NOTED NO TORQUE INDICATION. ABORTED TKOF AND CLRED RWY. REVIEWING AFTER TKOF CHKLIST, NOTED INVERTOR IN OFF POS, APPARENTLY ACCIDENTALLY TURNED OFF INVERTOR WHEN OPENING ICE VANES. CHKED INVERTORS AND BOTH OPERATING PROPERLY. RETURNED TO GATE, REQUESTED NEW RELEASE. CONTINUED FLT TO DEN, RPTED TO FLT OPS, FILED COMPANY INCIDENT RPT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATES THAT IN THE LTT THE TORQUE IS CTLED BY THE INVERTOR, A SEPARATE TYPE OF GENERATOR, WHICH PROVIDES PWR TO THE GAUGE TO INDICATE TORQUE. ASKED IF THIS WAS POSSIBLY AN ERGONOMIC PROB, RPTR SAID HE HAS BEEN FLYING THIS MODEL FOR 5 YRS WITH NO PROB. CAN'T REALLY EXPLAIN WHY IT HAPPENED THIS TIME.

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.