# SDR SWAA2020092916197

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2020
- Submitted: September 29, 2020
- Operation: Air carrier
- Aircraft: [N8652B](https://openairdocs.org/aircraft/N8652B), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 36971
- Aircraft time: 20,887 hours, 9,203 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Doubler
- Part number: 143A7502
- Condition: Corroded
- Location: Fwd Cargo
- 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/SWAA2020092916197

## Discrepancy

FWD PIT FLOOR STRAP ATTACH DOUBLER AT Z ANGLE UPPER SURFACE CORRODED STA 500C+17 AT LBL 24 AND WL 157.  FWD CARGO ATTACH Z-ANGLE DOUBLER SURFACE CORRODED STA 500C+17 WL 157.  BLENDED AND REMOVED CORROSION, IAW SRM 53-00-53-1A-2 STEP 2D(1); (2); (3).  MATERIAL THICKNESS IS .040; MAT LOSS IS .005; MAT REMAINING IS .035 'OUT OF LIMITS', IAW SRM 53-00-53-1A-2 STEP 4(2) FIG 103 DETAIL D.   DRILLED AND REMOVED DOUBLER, IAW SRM 51-40-02-0G-0.  FABRICATED, CUT, AND DRILLED ALL FASTENER HOLES.  DEBURRED IAW BOEING DWG 143A7502 REV-V AND SRM 51-40-05-0G-0.  TREATED AND PRIMED IAW SRM 53-00-53-2R-5 REPAIR 5.  INSTALLED Z-ANGLE DOUBLER, IAW SRM 53-00-53-2R-5 REPAIR 5.

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