What was found
DURING CLIMB, LANDING GEAR DID NOT INDICATE UP AND LOCKED. RETURNED TO PHL AND AIRCRAFT LANDED WITHOUT INCIDENT. FOUND MAINTENANCE BYPASS VALVE DOOR EXTENDED. RESECURED DOOR AND OPERATIONAL CHECK GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB, LANDING GEAR DID NOT INDICATE UP AND LOCKED. RETURNED TO PHL AND AIRCRAFT LANDED WITHOUT INCIDENT. FOUND MAINTENANCE BYPASS VALVE DOOR EXTENDED. RESECURED DOOR AND OPERATIONAL CHECK GOOD.