What was found
LOUD HISSING NOISE FROM L1 POST-DEPARTURE. ALL INDICATIONS APPEARED NORMAL ON DOOR AND ON MFD. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. R&R L1 DOOR FWD DOOR SLIDE BELLCRANK MECHANISM.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
LOUD HISSING NOISE FROM L1 POST-DEPARTURE. ALL INDICATIONS APPEARED NORMAL ON DOOR AND ON MFD. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. R&R L1 DOOR FWD DOOR SLIDE BELLCRANK MECHANISM.