# SDR ASAA2026021964792

- 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: Transition Panel
- Part number: 146A75023
- 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/ASAA2026021964792

## Discrepancy

AFT CARGO LH TRANSITION PANEL HAS CORROSION BETWEEN STATIONS 727I TO FWD BULKHEAD. GROUNDED - YES. REMOVED CORROSION BETWEEN STA. 737I - FWD BULKHEAD. ORIGINAL THICKNESS .040 MAT LOSS AT GREATEST POINTS .007, AT LOWEST POINT REMAINING THICKNESS AT .033 AREAS OUT OF LIMITS PER B737-900 SRM 53-00-53-1A-2. FABBED AND INSTALLED REPAIRS PER B737-900 SRM 53-00-53-2R-5.

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