As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6909 - LYH-IAD - DURING CLIMB-OUT, RETURNED TO LYH DUE TO THE RT FUEL CAP COMING UNSECURED IN FLIGHT. AIRCRAFT RETURNED TO LYH WITH NO FURTHER INCIDENTS. MAINTENANCE INSPECTED AREA AND RESECURED CAP. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)