What was found
CHRONIC FOR LAV L (4L) DIFFICULTY LOCKING DOOR INFLIGHT. THIS FLEET HAS BEEN EXPERIENCING LOCKING ISSUES AND ALWAYS INFLT AND RARELY DUPLICATED ON GROUND. ALL PROBLEMS HAVE BEEN RELATED TO THRESHOLD. SOME JUST START LIFTING UP AND INTERFERE WITH DOOR ALWAYS CORNER OPPOSITE OF HINGE. WE HAD A RECENT AIRCRAFT THAT HAD CORROSION, WE NEED TO INVESTIGATE IF WE HAVE A THRESHOLD PROBLEM OR A COMBINATION OF THRESHOLD AND CORROSION. IF WE REMOVE THRESHOLD AND NO CORROSION NOTED, THEN WE CAN JUST REPLAC THRESHOLD PER CMM. IF CORROSION IS FOUND WE WILL NEED TO CONTACT ENGINEERING FOR DISPOSITION. VISUAL INSPECTION AROUND THRESHOLD AREA FOR CORROSION. CMM 25-43-26 SUBTASK 25-43-26-440-002 PARAGRAPH B. (6)(O), (6)(P 2.THIS REQUEST IS BEST TO BE SCHEDULED IN SFO AND SHOULD NOT FOUND WE COULD BE LOOKING AT 2-7 DAYS FOR REPAIR. REASON FOR SFO IS THEY ARE EQUIPPED TO MAKE SPECIFIC PARTS GOING TO LOCK THIS TO MAKE SURE AN INSPECTION IS ACCOMPLISHED IF NO CORROSION IS FOUND, REPLACE THRESHOLD COVER PER JAMCO & (6)(Q).***IF CORROSION IS FOUND, CONTACT INTERIORS ENGINEERING BE SCHEDULED UNLESS ALL PARTS ARE AVAILABLE. IF CORROSION IS ECRA 2549-01035 AND EA 2540-03150 FOR REFERENCE ONLY. NEEDED FOR REPAIRS IF CORROSION IS FOUND. TO DETERMINE IF CORROSION IS NOTED. CARRIED BY ELB LOCKED 1.REMOVE THRESHOLD COVER PER JAMCO CMM 25 43-26 SUBTASK 25-43-26 040-002 PARAGRAPH B. (6)(E), (6)(F) & (6)(G). PERFORM A DETAILED IF CORROSION IS FOUND, PLEASE REFERENCE EA 2540-03150 OPS 3. REOVE OVER HEAD