# SDR SWAA2022030745857

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 19, 2019
- Submitted: March 7, 2022
- Operation: Air carrier
- Aircraft: [N435WN](https://openairdocs.org/aircraft/N435WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 32455
- Aircraft time: 55,870 hours, 32,984 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Scuff Plate
- Part number: 654A00358
- Condition: Corroded
- Location: Fwd Cargo Thresh
- 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/SWAA2022030745857

## Discrepancy

FWD PIT STA 450-500; RBL28; THRESHOLD PLATE HAS SEVERAL AREAS OF LIGHT CORROSION; MRK'D. / REMOVED CORROSION FROM FWD PIT THRESHOLD PLATE IAW SRM 51-40-02-0G-0. VERIFIED LIMITS FOUND OUT OF LIMITS IAW SRM 53-30-15-0I-1. REMOVED AND INSTALLED NEW THRESHOLD PLATE IAW SRM 51-40-02-0G-0. VERIFIED NEW PART IAW SRM 51-30-15-0I-1 MPN 654A003-58 LOCATED AND DRILLED NEW PART IAW SRM 51-40-05-0G-0 MADE COUNTERSINK IAW SRM 51-40-08-0G-0 AND DWG 143A8330 REV B; ORIGINAL THICKNESS .045' LOSS .011' REMAINING .034. STA 450-500 RBL 28

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