Narrative:

While conducting a training operation departing runway 33 I reduced power on the #1 engine. Before the student received a vr call, he rotated and the aircraft turned to the left about 15 degrees. To prevent further incident, I added power to the #1 engine and adjusted the pitch to prevent loss of airspeed. I allowed the aircraft to climb on the new heading as I felt trying to turn back toward the runway would be too critical at such a slow airspeed. The flight path took us over a taxiing air carrier flight. I estimate our height above ground at this point to be about 100'. At all times after lift off the aircraft was controled to make a positive rate of climb, and at no time was there any indication of a stall. With exception of the turn at lift off, the aircraft was in complete control throughout the climb out. Although I was able to act quickly when the aircraft started toward the taxiing aircraft, I was unable to prevent the heading from moving away from the runway west/O creating a possible worse situation. If the #2 engine had been selected to reduce power, the turn would have been made away from any traffic. I will consider this in future training missions.

Related reports:

Google
 

Original NASA ASRS Text

Title: HEADING TRACK DEVIATION OCCURS WHEN INSTRUCTOR PLT PULLS POWER BACK ON 1 ENGINE ON TKOF DURING TRAINING ACTIVITY PLT.

Narrative: WHILE CONDUCTING A TRNING OPERATION DEPARTING RWY 33 I REDUCED PWR ON THE #1 ENG. BEFORE THE STUDENT RECEIVED A VR CALL, HE ROTATED AND THE ACFT TURNED TO THE LEFT ABOUT 15 DEGS. TO PREVENT FURTHER INCIDENT, I ADDED PWR TO THE #1 ENG AND ADJUSTED THE PITCH TO PREVENT LOSS OF AIRSPD. I ALLOWED THE ACFT TO CLB ON THE NEW HDG AS I FELT TRYING TO TURN BACK TOWARD THE RWY WOULD BE TOO CRITICAL AT SUCH A SLOW AIRSPD. THE FLT PATH TOOK US OVER A TAXIING ACR FLT. I ESTIMATE OUR HEIGHT ABOVE GND AT THIS POINT TO BE ABOUT 100'. AT ALL TIMES AFTER LIFT OFF THE ACFT WAS CTLED TO MAKE A POSITIVE RATE OF CLB, AND AT NO TIME WAS THERE ANY INDICATION OF A STALL. WITH EXCEPTION OF THE TURN AT LIFT OFF, THE ACFT WAS IN COMPLETE CTL THROUGHOUT THE CLBOUT. ALTHOUGH I WAS ABLE TO ACT QUICKLY WHEN THE ACFT STARTED TOWARD THE TAXIING ACFT, I WAS UNABLE TO PREVENT THE HDG FROM MOVING AWAY FROM THE RWY W/O CREATING A POSSIBLE WORSE SITUATION. IF THE #2 ENG HAD BEEN SELECTED TO REDUCE PWR, THE TURN WOULD HAVE BEEN MADE AWAY FROM ANY TFC. I WILL CONSIDER THIS IN FUTURE TRNING MISSIONS.

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.