What was found
(CAN) ON TAKEOFF, FLAP FAILURE AT 4 DEGREES. ACFT RETURN TO DEPARTURE. BPSU HAS BEEN REPLACED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
(CAN) ON TAKEOFF, FLAP FAILURE AT 4 DEGREES. ACFT RETURN TO DEPARTURE. BPSU HAS BEEN REPLACED.