# SDR USAA2011090100021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2011
- Submitted: September 2, 2011
- Operation: Air carrier
- Aircraft: N425US
- Make and model: Boeing 737401
- Aircraft serial: 23992
- Aircraft time: 60,222 hours, 40,296 cycles
- System (JASC): [5313 · Fuselage Main, Longeron/Stringer](https://openairdocs.org/jasc/5313)
- Part: Stringer
- Part number: 6545775
- Condition: Corroded
- 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/USAA2011090100021

## Discrepancy

Q5 CHECK - LEVEL 2 INTERGRANULAR CORROSION ON STRINGER AT BS 847, S22R.  REPLACED STRINGER BETWEEN BS 847 TO BS 905, S22R IAW B737 SRM 53-60-03, FIG 1, DETAIL II & SRM 51-10-02.

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