# SDR ASAA2023070344117

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2023
- Submitted: July 19, 2023
- Operation: Air carrier
- Aircraft: [N278AK](https://openairdocs.org/aircraft/N278AK), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 44113
- Aircraft time: 20,230 hours, 6,500 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Part number: 143A7501192
- Condition: Corroded
- Location: Unknown
- 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/ASAA2023070344117

## Discrepancy

FWD CARGO LOCATED BETWEEN STA.500B AND 500I @ STR 26R, RIGHT TRANSITION PANEL UPPER SURFACE CORRODED AROUND FASTENER HOLES AS MARKED. (DOT ATTACH). GROUNDED - YES. REMOVED CORROSION FROM TRANSITION PANEL BETWEEN STA. 500B - 500I, STR 26R. ORIGINAL THICKNESS IS .040, MATERIAL REMOVED IS .007, MATERIAL REMAINING IS .033, FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-30-53-01-2. REMOVED DAMAGED TRANSITION PANEL, FABRICATED NEW TRANSITION PANEL P/N: BAC1496-444 7075-T62, P.O. 1059499.1, ALODINED, PRIMED, INSTALLED IAW B737-900 SRM 53-00-53-2R-5 TOOL# T8224P CAL DUE: 01-03-2024 REMOVED DOT.

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