# SDR USAA040922

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 2004
- Submitted: December 13, 2004
- Operation: Air carrier
- Aircraft: N435US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24557
- Engine: Cfmint CFM563B2
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Condition: Cracked
- Location: Ram Air
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA040922

## Discrepancy

PIT - Q1 - AIR DUCT, .5 INCH CRACK, LT RAM AIR DUCT UPPER SIDEWALL AT STA 540 AND S-22L.  INSTALLED DOUBLER IAW TYP REP 53-50-03.

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