# SDR USAA070066

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 24, 2007
- Submitted: January 24, 2007
- Operation: Air carrier
- Aircraft: [N422US](https://openairdocs.org/aircraft/N422US), registered now
- Make and model: Boeing 737401
- Aircraft serial: 23989
- Aircraft time: 49,577 hours, 49,577 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- 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/USAA070066

## Discrepancy

RADIUS LT STRINGER 5A STA 1138 AT FUSELAGE CUTOUT FOR HORIZ STAB AFT LUG HAS CRACK.  INSTALLED DOUBLER, REPAIR ANGLES PER SRM 53-00-01 FIG 201, REP 21, DEFECT SIZE:  3 INCHES.

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