# SDR ASAA2025110462413

- 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: Transition Panel
- Part number: 146A750250
- 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/ASAA2025110462413

## Discrepancy

AFT CARGO COMPARTMENT-STA 727G-727H-RIGHT SIDEPLATE WITH CORROSION. GROUNDED - YES. REMOVED CORROSION FROM THE AFT PIT, R/H TRANSITION PANEL AT STA 727G-727H IAW B737-800 SRM 53-00-53-1A-2.2.D. ORIG THICKNESS IS .040" IAW B737-800 SRM 53-00-53-1A-2. TABLE 2. REMOVED .005" REMAINING THICKNESS IS .035" AND IS FOUND TO OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2.4.(2). REPAIRED AFT PIT R/H TRANSITION PANEL AT STA 727F+10 TO 727H+10 USING PN:BAC1496-377 7075-T62 PO:1130861.1 IAW B737-800 SRM 53-00-53-2R-5.

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