<< >> NASA ASRS Report 122876, September 1989

Engine computer on light transport carrying cargo prevents overtemp and overtorque when thrust levers advanced too rapidly on takeoff.

Attributes
ACN	122876
Time
Date	198909
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : cle
State Reference	OH
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air taxi
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : takeoff
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 3060 flight time type : 700
ASRS Report	122876
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

On takeoff roll left engine bypassed. Torque dropped 30%. In my opinion all systems worked normally. Power levers were a little stickier than most other light transport a's I have flown, and I advanced the power more quickly than normal. The engine computer sensed a quickly approaching engine temperature limit and bypassed. Note: temperature limit was not more than 630 on the takeoff.

Related reports:

• Aircraft equipment problem. Engine overspd over-torque.
• A PIC allows a takeoff on an light transport after the first...
• An ATR 42 on takeoff at 200 ft advised ATC aircraft was retu...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: ENGINE COMPUTER ON LTT CARRYING CARGO PREVENTS OVERTEMP AND OVERTORQUE WHEN THRUST LEVERS ADVANCED TOO RAPIDLY ON TKOF.

Narrative: ON TKOF ROLL LEFT ENG BYPASSED. TORQUE DROPPED 30%. IN MY OPINION ALL SYSTEMS WORKED NORMALLY. PWR LEVERS WERE A LITTLE STICKIER THAN MOST OTHER LTT A'S I HAVE FLOWN, AND I ADVANCED THE PWR MORE QUICKLY THAN NORMAL. THE ENG COMPUTER SENSED A QUICKLY APCHING ENG TEMP LIMIT AND BYPASSED. NOTE: TEMP LIMIT WAS NOT MORE THAN 630 ON THE TKOF.

Data retrieved from NASA's ASRS site as of August 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.