# SDR ASAA2025110462415

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 4, 2025
- Submitted: November 20, 2025
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 70,079 hours, 20,914 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Shield
- Part number: 146A8127U12
- Condition: Corroded
- Location: Zone 100
- 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/ASAA2025110462415

## Discrepancy

AFT CARGO COMPARTMENT-STA 767-787 RIGHT SHIELD WITH CORROSION. GROUNDED - YES. REMOVED CORROSION FROM AFT PIT CARGO DOOR FWD SHIELD IAW B737-800 SRM 53-60-15-1A-1.2.A. ORIGINAL THICKNESS IS 0.050" IAW B737-800 53-60-15-01-1. TABLE 4. REMOVED 0.015, REMAINING THICKNESS IS 0.035 IS FOUND TO BE OUT OF LIMIT IAW B737-800 SRM 53-60-15-1A-1.4.G (2)(B). TOOL#T8224V/T8227E-2 DUE DATE 31MARCH2026, REMOVED THE SHIELD IAW B737-800 SRM 51-40-02. RECEIVE NEW AFT PIT CARGO DOOR FWD SHIELD P/N#146A8127-11, PO#11369, LOCATED, DRILLED, COUNTERSINKED IAW B737-800 SRM 51-40-05. INSTALLED THE NEW SHIELD IAW B737-800 SRM 51-40-02.

---
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.