# SDR ASAA2026042166368

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2026
- Submitted: May 30, 2026
- Operation: Air carrier
- Aircraft: [N464AS](https://openairdocs.org/aircraft/N464AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40714
- Aircraft time: 44,925 hours, 13,804 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Part number: 143A7501204
- Condition: Corroded
- Location: Zone 100
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2026042166368

## Discrepancy

RH SIDEPLATE TRANSITION PANEL IS CORRODED IN MULTIPLE SPOTS FROM STA 500 - 500K. GROUNDED - YES. REMOVED AND REPLACED R/H TRANSITION PANEL I.A.W. B737-900 SRM 53-00-53-2R-6W= 1" 2= .040 R= .030 L= 1' D= .010.

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