What was found
NR 3 ENGINE UPPER COWL O/B AFT CORNER SKIN AND ATTACH SUPPORT FOR RUB SEAL RETAINER ARE GOUGED AND CRACKED. STOP DRILLED CRACKS PER B727 SRM 51-10-1 ON THE NR 3 ENGINE UPPER COWL O/B AFT CORNER SKIN. PERFORMED HFEC INSP PER B727 NDT MANUAL PART 6-51-00-00 FIG 4. NO CRACKS INDICATED PAST STOP DRILL. FABRICATED REPAIR DOUBLER USING 2024-T3 .040 6 X 12 INCHES IAW B727 SRM 54-10-3 PG 22. TREATED AND PRIMED REPAIR DOUBLER IAW B727 SRM 51-10-2. LOT 241561 & LOT 8F0ZK14TO. INSTALLED REPAIR DOUBLER IAW B727 SRM 51-30-2.