# SDR SWAA2020052642759

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2020
- Submitted: May 26, 2020
- Operation: Air carrier
- Aircraft: [N922WN](https://openairdocs.org/aircraft/N922WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32461
- Aircraft time: 41,140 hours, 24,679 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Angle
- Part number: 146A7502
- Condition: Corroded
- Location: Fuselage
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2020052642759

## Discrepancy

AFT CARGO RT STA 727E TO 767 'Z' ANGLE UPPER SURFACE CORRODED. WL157 RBL 20.  DURING CORROSION REMOVAL 100% MATERIAL LOSS NOTED. FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53-1A-2 FIG 103 DET 'D'; RECEIVED AND VERIFIED NEW 'Z' ANGLE A42376. LOCATED AND DRILLED Z-ANGLE IAW SRM 51-40-05 AND DWG 146A7502. INSTALL Z-ANGLE IAW SRM 51-40-02 AND DRAWING146A7502. TREATED AND PRIMED IAW AMM 51-21-72 AND SRM 51-20-01. APPLIED CIC IAW AMM 51-21-91 ('Z' ANGLE WAS INSTALLED ON RT STA 727 TO 767.) P/N 146A7502-51.

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