What was found
DURING MBV INSPECTION, QA FOUND PAX DOOR REINFORCEMENT FITTING CRACKED AT FRAME 20 & STRINGER 3L. ACFT WAS REMOVED FROM SERVICE FOR MBV INSPECTION & WILL BE RETURNED TO SERVICE AFTER MBV INSPECTION. R & R PAX DOOR REINFORCEMENT FITTING IAW SRM 51-40-02, 51 20-03 & AMM 20-10-01. REPLACEMENT PART 145-24109-603.