Flight Instructor and student on training flight reported runway excursion during takeoff roll while practicing engine out procedures.
Synopsis
Flight Instructor and student on training flight reported runway excursion during takeoff roll while practicing engine out procedures.
Narrative
We were practicing engine failure on take off roll; prior to entering the runway; we went over the recovery procedure and how the simulation is going to be conducted. SP (Student) setup for a short field take off and once aligned with the runway; SP held the brake and added full power. Upon reaching the max load; SP released the brake and started the roll; once the airspeed indicator became alive and indicating 20-23 range; I the IP (Instructor) pulled the left throttle back to the idle to simulate left engine failure. Airplane started to turn left and no corrective action was identified by the IP until the winglet of the right wing was to the center line. IP immediately added control input by ensuring the power was idle and adding right rudder; even so; the plane still wanted to turn left and end up rolling off the runway; where left main was on grass and got stuck deep. IP tried to move the plane using the throttle but would not move so turned off the engine and with the help of the airport manager and maintenance team; able to tug it out to the runway.
Second reporter narrative
Today we were working on single engine instrument approach procedures. After having successfully completed a precision and non precision OEI (One Engine Inoperative) approach to full stop; we were planning on working on take off emergency procedures. On our taxi back to Runway 22 at ZZZ; Name let me know that we will be doing a short field simulated engine failure rejected take off. He instructed me on what we were going to do next and the procedures to complete the task successfully. As we were on the runway threshold; I held in the brakes and allowed power percentage to reach 100% and made sure no indications were in the red. Once I let power reach 100% I lifted my hand above the throttle to allow the Flight Instructors to have control of the power setting. Upon release of the brakes we began to roll and the plane was doing a normal pull to the left; which I was correcting using right rudder. As soon as left engine power was removed I felt a pretty violent tendency to the left. I tried to correct using strong rudder to the right and also pressed in some right brake. We were still pulling hard to the left and I felt out of control of the plane and handed control to the Flight Instructor. The Flight Instructor acknowledged and took control; but we were already far left on the runway and our left main gear went into the grass. I do not remember if I pulled power back to idle or if the Flight Instructor did and at what point exactly. But as we entered the grass the plane stopped and the left gear was stuck.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.