As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING NR 3 PHASE INSP THE LOWER DOOR FRAME CHANNEL WAS FOUND TO BE CRACKED. THE CHANNEL, PN 114-420041-41, RUNS FROM FUSELAGE STA 150.60 TO STA 177.35 ACROSS THE BOTTOM OF THE DOOR OPENING. THE CRACK WAS LOCATED IN THE BEND RADIUS OF THE OTBD SUPPORT FLANGE AND EXTENDED APPROX 3.25 AFT FROM THE CTR CUTOUT. REPLACED THE CRACKED CHANNEL WITH NEW IAW SRM, CHAP 51-00-00.