# SDR SWAA2023041214179

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2023
- Submitted: April 12, 2023
- Operation: Air carrier
- Aircraft: [N956WN](https://openairdocs.org/aircraft/N956WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 36672
- Aircraft time: 38,869 hours, 23,696 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shield
- Condition: Corroded
- Location: Zn 100 Fus Lower
- 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/SWAA2023041214179

## Discrepancy

FWD CARGO BAY - CORROSION ON AFT SHIELD AT WL 156 - RBL 23.5 BS 500+1.5; BS 500+5.5; BS 500+9.5; BS 500+13.5; BS 500+17.5. / RBL 24.75 BS 492+4; BS 492+6.<[01] NO ALLOWABLE DAMAGE LIMITS IN SRM REPAIR BY REPLACEMENT IAW SRM 51-10-02 PAR. 9.;[02] RECEIVED NEW SHIELD P/N:143A8126Y36 ;LOT: 1520873-1; PO/N: 909477/1 ; AND LOCATED AND DRILLED AT FCB RBL 24 BETWEEN BS 480+12' TO BS 500A IAW SRM 51-40-05 AND DWG:143A8126 ID:0018 REV:-.;[03] VERIFIED CORRECTIVE ACTION STEPS 1 AND 2. TASK CARD COMPLETE.

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