What was found
PILOT REPORTED LOSS OF POWER ON TAKEOFF CLIMB. AFTER RETURNING TO THE AIRPORT, INVESTIGATION REVEALED A FAILED ALTERNATE AIR DOOR. (X)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PILOT REPORTED LOSS OF POWER ON TAKEOFF CLIMB. AFTER RETURNING TO THE AIRPORT, INVESTIGATION REVEALED A FAILED ALTERNATE AIR DOOR. (X)