# SDR AALA20130801003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 31, 2013
- Submitted: August 1, 2013
- Operation: Air carrier
- Aircraft: [N973AN](https://openairdocs.org/aircraft/N973AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29548
- Aircraft time: 36,087 hours, 14,807 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Stiffener
- Condition: Cracked
- Location: Fuselage
- 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/AALA20130801003

## Discrepancy

RT VERTICAL STIFFENER JUST OTBD OF PACK EXHAUST DUCT IS CRACKED AT LOWER END.  INSTALLED RT VERTICAL STIFFENER IAW AARD 51-10-05-1 & BOEING DRAWINGS 111A1000 & 149A7210.

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