What was found
AIRCRAFT DIDN'T DEPRESSURIZE ON THE GROUND WHILE THE INDICATORS READ NORMAL. CARGO DOOR IS DAMAGED, ARM SHEARED OFF THE PISTON, CARGO DOOR WILL NOT FULLY OPEN.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT DIDN'T DEPRESSURIZE ON THE GROUND WHILE THE INDICATORS READ NORMAL. CARGO DOOR IS DAMAGED, ARM SHEARED OFF THE PISTON, CARGO DOOR WILL NOT FULLY OPEN.