# SDR ASAA2026021964787

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 19, 2026
- Submitted: March 10, 2026
- Operation: Air carrier
- Aircraft: [N428AS](https://openairdocs.org/aircraft/N428AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36353
- Aircraft time: 36,408 hours, 11,334 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 146A81236
- Condition: Corroded
- Location: Zone 200
- 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/ASAA2026021964787

## Discrepancy

AFT CARGO DOOR CUTOUT SILL AREA HAS A FEW SPOTS OF CORROSION. GROUNDED - YES. REMOVED CORROSION . ORIGNAL THICKNESS .045 PER B737-900 SRM 53-60-15. MAT LOSS .008 AT LOWEST, NEW THICKNESS .037 AT LOWEST. AREA OUT OF LIMITS. LOCATED, DRILLED AND INSTALLED P#146A8123-6 PER B737-900 SRM 51-40-02 REF B DWG146A8120 REV A.

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