# SDR ASAA2026022465016

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 24, 2026
- Submitted: March 24, 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): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Part number: 147A555832
- 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/ASAA2026022465016

## Discrepancy

AFT WET AREA BS1016 RBL 30 FLOOR STRUCTURE CORRODED. A(K352). GROUNDED - YES. REMOVED CORROSION IAW SRM 53-70-51-1A-1. ORIG MAT .150, REMAINING MAT .070. MAT LOSS OF .080 IS BEYOND ALLOWABLE LIMITS. REPAIRED AREA IAW EA 900ER-53EA-30025 REV 00. THIS IS A CATEGORY A REPAIR.

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