What was found
TPA MAINTENANCE REPORTED, TWO CRACKS IN THE SKIN AND DOOR SURROUND STRUCTURE IN THE LOWER AFT CORNER OF THE L1 DOOR CUTOUT. THE FIRST CRACK, APPROXIMATELY 5 INCHES LENGTH, HAS PROPAGATED THROUGH THE EXTERNAL SKIN AND THE BONDED DOUBLER. THE SECOND CRACK 6 INCHES LONG, WAS CONTAINED WITH THE BEAR STRAP. THE DAMAGE WAS CUT OUT AND AN EXTERNAL DOUBLER AND TRIPLER WERE INSTALLED PER FAA/DER FORM 8110-3 DATED 12-05-95.