# SDR ASAA2025080160598

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2025
- Submitted: September 17, 2025
- Operation: Air carrier
- Aircraft: [N526AS](https://openairdocs.org/aircraft/N526AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35196
- Aircraft time: 52,771 hours, 18,950 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Floor Support
- Part number: 146A75052
- 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/ASAA2025080160598

## Discrepancy

AFT CARGO INTERCOSTAL CORRODED STA 727A TO 727B RBL 20. GROUNDED - YES. REMOVED CORROSION ON INTERCOSTAL STA 727A-727B RBL 20 AND FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2 REMOVED AND REPLACED INTERCOSTAL IAW B737-800 SRM 51-40-02-0G-0 W= 2" O= .032" L= 1" D= .012.

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