What was found
ON SHUTTING THE MAIN CABIN DOOR, THE GUST LOCK WOULD NOT RETRACT INTO DOOR. NOTICED DAMAGED METAL AROUND THE GUST LOCK. THE AIRCRAFT WAS GROUNDED. MAINTENANCE BLENDED OUT THE DAMAGE ON THE EDGE OF THE L1 DOOR GUST LOCK CUTOUT, FOUND TO BE WITHIN LIMITS IAW SRM 51-02-00 STEP 1. A. (7) (A). TREATED, PRIMED & PAINTED IAW SRM 51-10-03.