# SDR AALA202010209022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2020
- Submitted: November 16, 2020
- Operation: Air carrier
- Aircraft: [N811NN](https://openairdocs.org/aircraft/N811NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31079
- Aircraft time: 33,443 hours, 13,558 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Transition Panel
- Condition: Corroded
- Location: Bs 500-500i
- 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/AALA202010209022

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE.  CORROSION OF LT TRANSITION PANEL BETWEEN STA 500 AND STA 500I AT STR 25L, MEASURING L=3.0 IN, W=2.0 IN, D=0.01 IN.  REPLACED TRANSITION PANEL WITH NEW, IAW 53-00-53-2R-5.  SUPPLEMENTAL REPORT TO CORRECT SECTION 7 CORROSION LEVEL.  HSDA  REFLECTS THAT THE LEVEL WAS DETERMINED TO BE A LEVEL 1 DUE TO A PREVIOUS BLEND AND LEVEL 2 WAS DOCUMENTED ON THIS ERPORT IN ERROR.

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