# SDR SWAA2021070280174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2021
- Submitted: July 2, 2021
- Operation: Air carrier
- Aircraft: [N7721E](https://openairdocs.org/aircraft/N7721E), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 34479
- Aircraft time: 50,877 hours, 26,372 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Condition: Corroded
- Location: Bs 727-787
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2021070280174

## Discrepancy

DOT A223-007 AFT CARGO L/H Z ANGLE CORROSION AROUND FASTNER HOLES STA 727D TO 787.  REMOVED CORROSION FROM Z ANGLE IAW SRM 51-10-02-0G-0; [02] VERIFIED LIMITS FOR LH Z ANGLE ORIGINAL THICKNESS .040 REMAINING THICKNESS .011. MATERIAL LOSS OF .029.  OUT OF LIMITS IAW 53-00-53-1A-2.   REMOVED L/H Z ANGLE FROM STA 727E+7 TO 847 IAW SRM 51-40-02-0G-0; [06] VERIFIED STEP 5 IS COMPLETE; [07] VERIFIED MATERIAL FOR LH Z ANGLE; BAC1496-377 7075-T6 IAW SRM 53-00-53-2R-5.   LOCATED AND DRILLED Z ANGLE REPAIR PEICE IAW SRM 53-00-53-2R-5 AND DWG 146A7502 REV-.   VERIFIED ITEM 10; [12] VERIFIED ITEMS 5-6 & 10-11.  TREATED AND PRIMED ZEE ANGLE IAW AMM 51-21-41; AMM 51-21-99.

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