# SDR USAA040729

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2004
- Submitted: November 19, 2004
- Operation: Air carrier
- Aircraft: [N432US](https://openairdocs.org/aircraft/N432US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24554
- Engine: Cfmint CFM563B2
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Channel
- Condition: Corroded
- Location: Fuselage
- Part time: 41,131 hours
- 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/USAA040729

## Discrepancy

PIT - Q4, Z-CHANNEL, CORROSION; 1 INCH DIAMETER AREA, LEVEL 1, TASK NR C53-107-01, MED LOWER THRESHOLD, STA 312-344.  MANUFACTURED AND INSTALLED NEW Z-CHANNEL IAW DWG 65-17688.

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