# SDR AALA20130808004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2013
- Submitted: August 9, 2013
- Operation: Air carrier
- Aircraft: [N975AN](https://openairdocs.org/aircraft/N975AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29549
- Aircraft time: 36,407 hours, 14,875 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Condition: Corroded
- Location: Apu Bay
- 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/AALA20130808004

## Discrepancy

AUXILIARY POWER UNIT PLENUM AFT VERTICAL STIFFENER AT STATION 1125.  INSTALLED NEW APU PLENUM AFT VERTICAL STIFFENER AT STATION 1125 IAW AARD 51-00-05-1 & DRAWING 148A8650.

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