PA34 instructor pilot was conducting training for the loss of power on one engine during takeoff. Th...

Attributes
ACN	762275
Time
Date	200711
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	PA-34-200 Seneca I
Operating Under FAR Part	Part 91
Flight Phase	ground : takeoff roll
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : cfi pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 250 flight time total : 3000 flight time type : 400
ASRS Report	762275
Events
Anomaly	excursion : runway other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : regained aircraft control
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Purpose of flight was to conduct a commercial pilot multi-engine land initial rating end-of-course stage check. Flight was uneventful and student was doing well. Near the end of the stage check we landed at ZZZ to conduct the required lndgs. After the first landing was complete; I instructed the student to taxi back for takeoff. During the takeoff; as the student was applying takeoff power; I gave him a partial power loss on the right side (#2) engine. The student failed to reduce power on both engines and instead continued to apply full power on the left engine. I immediately call for control of the aircraft. By the time control was relinquished; the aircraft was heading towards the edge of the runway. It was my decision that it was safer to exit the runway and still keep the aircraft on the paved surface; then straighten the nose. It was my opinion that if I had removed power from the other engine and try to straighten the aircraft; we may or may not have hit a runway edge light. After bringing the aircraft to a complete stop; we relocated the aircraft back onto a taxiway and checked for damage. None was found and the decision to return to home airport was made. The student later informed me that he had never been taught the engine failure on the ground procedure and thought that maybe one of his brakes had failed.

Original NASA ASRS Text

Title: PA34 INSTRUCTOR PLT WAS CONDUCTING TRAINING FOR THE LOSS OF PWR ON ONE ENG DURING TKOF. THE STUDENT PLT FAILED TO REACT BY REDUCING PWR; AND THE ACFT DEPARTED THE RWY.

Narrative: PURPOSE OF FLT WAS TO CONDUCT A COMMERCIAL PLT MULTI-ENG LAND INITIAL RATING END-OF-COURSE STAGE CHK. FLT WAS UNEVENTFUL AND STUDENT WAS DOING WELL. NEAR THE END OF THE STAGE CHK WE LANDED AT ZZZ TO CONDUCT THE REQUIRED LNDGS. AFTER THE FIRST LNDG WAS COMPLETE; I INSTRUCTED THE STUDENT TO TAXI BACK FOR TKOF. DURING THE TKOF; AS THE STUDENT WAS APPLYING TKOF PWR; I GAVE HIM A PARTIAL PWR LOSS ON THE R SIDE (#2) ENG. THE STUDENT FAILED TO REDUCE PWR ON BOTH ENGS AND INSTEAD CONTINUED TO APPLY FULL PWR ON THE L ENG. I IMMEDIATELY CALL FOR CTL OF THE ACFT. BY THE TIME CTL WAS RELINQUISHED; THE ACFT WAS HEADING TOWARDS THE EDGE OF THE RWY. IT WAS MY DECISION THAT IT WAS SAFER TO EXIT THE RWY AND STILL KEEP THE ACFT ON THE PAVED SURFACE; THEN STRAIGHTEN THE NOSE. IT WAS MY OPINION THAT IF I HAD REMOVED PWR FROM THE OTHER ENG AND TRY TO STRAIGHTEN THE ACFT; WE MAY OR MAY NOT HAVE HIT A RWY EDGE LIGHT. AFTER BRINGING THE ACFT TO A COMPLETE STOP; WE RELOCATED THE ACFT BACK ONTO A TXWY AND CHKED FOR DAMAGE. NONE WAS FOUND AND THE DECISION TO RETURN TO HOME ARPT WAS MADE. THE STUDENT LATER INFORMED ME THAT HE HAD NEVER BEEN TAUGHT THE ENG FAILURE ON THE GND PROC AND THOUGHT THAT MAYBE ONE OF HIS BRAKES HAD FAILED.

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.

PA34 instructor pilot was conducting training for the loss of power on one engine during takeoff. The student pilot failed to react by reducing power; and the aircraft departed the runway.