PA-44 Seminole/Turbo Seminole
Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 128; Flight Crew Total 234
Aircraft Equipment Problem Less Severe
Flight Crew Returned To Gate; Flight Crew Rejected Takeoff
Aircraft
On a training flight with my instructor we were preforming a short field takeoff. This was my first flight in a multiengine plane after six hours in the simulator. With my feet on the brakes I applied full power and then released the brakes. We rolled forward about a foot before the plane made a sharp yaw to the left and stopped. I reduced power. The brakes were locked up. At this point we did a positive exchange of controls and my instructor took over since he was PIC. He called the tower to alert them to our aborted takeoff. We checked the parking brake but that wasn't the problem. He called the tower to let him know that we were going to shut down and need to be towed to the ramp. Suddenly the brakes unlocked and we were able to taxi back to the ramp.
First multiengine flight for my student. Everything was running smoothly thru the run up. Cleared to takeoff. I told my student the takeoff was supposed to be a short field take off. When the student released the brakes the plane turned left due to the left brake being locked. On the runway for a minute trying to unlock brakes. Aborted takeoff and after realizing the parking brake had come on and took it off taxied to the ramp. We assigned the aircraft to maintenance due to the fact that the parking brake had come on without our doing.
PA-44 student pilot and flight instructor reported an aborted takeoff due to a brake system malfunction.