# SDR ASAA2021012534007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 25, 2021
- Submitted: February 6, 2021
- Operation: Air carrier
- Aircraft: [N483AS](https://openairdocs.org/aircraft/N483AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36350
- Aircraft time: 20,159 hours, 6,469 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Panel
- Part number: 143A7501102
- Part serial: NSN
- 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/ASAA2021012534007

## Discrepancy

FORWARD CARGO TRANSITION PANEL AT RBL 25 CORRODED BETWEEN STA 500B=10 TO STA 500L.  GROUNDED - YES.  REMOVED CORROSION FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-00-53-1A-2 REPAIRED TRANSITION PANEL IAW B737-900ER SRM 53-00-53-2R-5W=1.2 O=.040 R=.020 L=2.2 D=.020.

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