# SDR ASAA2023022142156

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2023
- Submitted: March 6, 2023
- Operation: Air carrier
- Aircraft: [N581AS](https://openairdocs.org/aircraft/N581AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35188
- Aircraft time: 55,489 hours, 16,498 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Part number: 146A750231
- Condition: Corroded
- 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/ASAA2023022142156

## Discrepancy

AFT PIT LH TRANSITION PANEL UPPER AND LOWER SURFACES HAVE CORROSION FROM STA 727G+10 - 787 (MARKED). GROUNDED - YES. REMOVED CORROSION AT AFT PIT LH TRANSITION PANEL STA 727G+10. ORIGINAL THICKNESS .040". REMOVED .010", REMAINING MATERIAL THICKNESS IS .030". FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53-1A-2. PANEL REPLACED ON TASKCARD G1774079. TOOL# T8224A CAL DUE: 15/JAN/24.

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