What was found
F/A`S REPORT L2 DOOR HANDLE DOES NOT STAY IN THE LOCKED POSITION. CREEPS UP SLIGHTLY DURING FLIGHT. GROUNDED-YES. REMOVED THE L-2 DOOR, REPLACED THE UPPER HINGE FITTING AT THE FUSELAGE TORQUE TUBE, AND REINSTALLED THE L-2 DOOR, REF B737-900 AMM 52-13-00/400 AND 52-13-41/401. REPLACED THE L-2 DOOR GUIDE ARM AND ADJUSTED THE L-2 DOOR TO WITHIN LIMITS, REF AMM 52-13-21/401 AND 52-13-00-820-801. AFT ENTRY DOOR (SOFT UNLATCHING) ADJUSTMENT WITHIN LIMITS, REF AMM 52-13-00-820-802. VERIFIED L-2 DOOR SENSOR ADJUSTMENT WITHIN LIMITS, REF AMM 52-71-11-820-801 AND ACCOMPLISHED L-2 DOOR SYSTEM TEST. TEST PASS, REF AMM 52-13-00-700-805.