# SDR USAA001126

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2000
- Submitted: October 31, 2000
- Operation: Air carrier
- Aircraft: [N433US](https://openairdocs.org/aircraft/N433US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24555
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Stiffener
- Condition: Cracked
- Location: Stabilizer
- Part time: 30,714 hours
- 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/USAA001126

## Discrepancy

FOUND VERTICAL STIFFENER WITH A .375 INCH CRACK, STAB STATION 101.90 BETWEEN RIVETS.  REPLACED STIFFENER AND INSTALLED PER SRM 51-10-02 AND 55-10-01.  (M)

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