# SDR AALA202109143336

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 26, 2021
- Submitted: September 14, 2021
- Operation: Air carrier
- Aircraft: [N812NN](https://openairdocs.org/aircraft/N812NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33520
- Aircraft time: 35,855 hours, 14,586 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Intercostal
- Part number: 141A5690U1
- Condition: Corroded
- Location: Bs 294-612
- 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/AALA202109143336

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION MEASURING L=0.75 IN, W=0.03 IN, D=0.000 IN, ON INTERCOSTAL LOCATED BETWEEN STA 294 TO STA 312 AT LBL 11.6. REPLACED INTERCOSTAL PER AARD 51-00-05-1 AND SRM 51-40-02.

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