What was found
DURING WORKS OF RETURN TO SERVICE, IT WAS DETECTED HIT ON BOTH ENG REVERSERS. MAINTENANCE PERSONNEL PERFORMED GROUND HANDLING EQUIPMENT HITS AIRPLANE CONDITIONAL INSPECTION, IAW AMM 05-51-59. DETECTING TWO CRACKS OF 0.750 LENGTH AND 1.00 LENGTH ON LT ENGINE EXTERNAL SKIN O/B THRUST REVERSER AT 01:30 HOURS POSITION AND NAC STA 253 AND NAC STA 254, AND A SCRATCH OF 6.00" LENGTH ON EXTERNAL SKIN I/B THRUST RT ENG REVERSER AT 02:00 HOURS POSITION AND NAC STA 233. THE DAMAGED AREA LIMITS WERE FOUND WITH UT-TT AND VISUAL INSPECTIONS, IAW SRM 51-70-05-2R-0 REPAIR GENERAL PARAGRAPH 4.A AND B737 NDTM PART 4, 51-00-02. THE DAMAGE WAS REMOVED IAW SRM 51-70-05-2R-2 REPAIR 2, PARAGRAPH 4.B; THE EXTERNAL SKIN O/B THRUST LT ENG REVERSER WAS REPAIRED IAW SRM 54-30-01 REPAIR 1, TABLE 201 AND SRM 51-70-05 REPAIR 2, FIGURE 201. AN ULTRASONIC INSPECTION (CTTU) WAS PERFORMED ON REPAIRED AND SURROUNDING AREA, WITH NO DELAMINATION NOR DISBOND FOUND IAW B737 NDTM PART 4, 51-00-02. A UT-TT AND DV INSPECTION WERE PERFORMED WITH NO HIDDEN, NOR SURFACE CARBON FIBERS DAMAGES FOUND IAW SRM 54-30-01-01A-1 ALLOWABLE DAMAGE 1, PARAGRAPH 4.C; B737 NDTM PART 4 51-00-02 AND BY HIT OPENING ACTUATOR SLATTED INBOARD TRUST RT ENG REVERSER, THE THRUST RT ENG REVERSER OPENING ACTUATOR WAS REPLACED IAW AMM 78-31-08, ALL CORRECT.