What was found
DURING LANDING IN FAY THE LT MLG DOOR CONTACTED THE RUNWAY. 3 DOWN & LOCKED LIGHTS WERE ILLUMINATED IN THE COCKPIT. MAINTENANCE DISCOVERED THE LT MLG EMERGENCY RELEASE CABLE HAD BECOME LODGED & WOULD NOT ALLOW THE DOOR UP-LOCK TO FULLY OPEN. THE UPLOCK DID ALLOW THE DOOR TO OPEN BUT WOULD NOT ALLOW THE DOOR TO RETURN TO THE FULL UP & LOCKED POSITION DURING GEAR EXTENSION. THE DOOR UPLOCK DID HOWEVER, LATCH IN THE CLOSED POSITION ILLUMINATING THE GREEN DOWN & LOCKED LIGHT LEADING THE CREW TO BELIEVE THAT THE GEAR WAS SAFE FOR LANDING. WITH THE LANDING GEAR EXTENDED & ALL SWITCHES IN THEIR PROPER LANDING POSITION, THE HYDRAULIC SYSTEM PRESSURE WAS RELIEVED & NO LONGER APPLIED TO THE MLG SYSTEM THUS ALLOWING THE DOOR TO SAG OPEN DURING LANDING ROLLOUT. THE LT MLG DOOR EMERGENCY CABLE WAS ADJUSTED & REPOSITIONED, THE DOOR REPLACED & A SATISFACTORY GEAR EXTENSION & RETRACTION WAS PERFORMED.