As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT 795 - EN ROUTE PHL-ORD, SHORTLY BEFORE LANDING LEFT MLG WOULD NOT LOCK IN THE DOWN POSITION. AFTER A SECOND ATTEMPT, LANDING GEAR LOCKED DOWN SUCCESSFULLY. LANDED ORD WITHOUT FURTHER INCIDENT. REPLACED BRAKE SWIVEL MANIFOLD. SWUNG GEAR. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)