# SDR SWAA2023041214159

- 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/SWAA2023041214159

## Discrepancy

FWD CARGO BAY - CORROSION ON FWD SHIELD AT WL 156 - RBL 24.75 BS 420+9; BS 420+12.25.<[01] NO ALLOWABLE DAMAGE LIMITS IN SRM REPAIR BY REPLACEMENT;[02] RECEIVED NEW SHIELD P/N:143A8126U21 AND LOCATED AND DRILLED AT FCB RBL 24 BETWEEN BS 420 TO BS 440 IAW SRM 51-40-05 AND DWG:143A8126 ID:0011.;[03] EDIT TO CORRECTIVE ACTION 2. <BR>RECEIVED NEW SHIELD P/N:143A8126U21; LOT:1510082-1 AND LOCATED AND DRILLED AT FCB RBL 24 BETWEEN BS 420 TO BS 440 IAW SRM 51-40-05 AND DWG:143A8126 ID:0011;[04] UPDATED STEP 1.;[05] VERIFIED CORRECTIVE ACTION STEPS 2;3 AND 4. TASK CARD COMPLETE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.