# SDR USAA2012050300026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 12, 2012
- Submitted: May 3, 2012
- Operation: Air carrier
- Aircraft: N427US
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24549
- Aircraft time: 61,145 hours, 40,839 cycles
- System (JASC): [5510 · Horizontal Stabilizer Structure](https://openairdocs.org/jasc/5510)
- Part: Bolt
- Part number: 65736971
- Condition: Corroded
- Location: Rt Horiz Stab
- 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/USAA2012050300026

## Discrepancy

Q1 CHECK - CORROSION ON RIGHT HORIZONTAL STABILIZER FORWARD UPPER BOLT AT BS 1093.417, RBL 35.50.  REPLACED RIGHT HORIZONTAL STABILIZER FORWARD UPPER BOLT IAW B737 AMM 27-41-11-404-009.

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