# SDR ASAA2025120663500

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2025
- Submitted: January 6, 2026
- Operation: Air carrier
- Aircraft: [N273AK](https://openairdocs.org/aircraft/N273AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 61554
- Aircraft time: 29,646 hours, 9,589 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 146A812325
- 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/ASAA2025120663500

## Discrepancy

AFT CARGO DOOR WEB SILL HAS CORROSION IN MULTIPLE SPOTS (MARKED). GROUNDED - YES. REMOVED DAMAGE FOUND TO BE OUT OF LIMITS, REMOVED AND REPLACED IAW B737-900ER SRM 51-40-02-0G & 51-40-05-0GW: 1" O: 0.050" R: 0.041" L: 2 D: 0.009".

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