# SDR USAA070437

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2007
- Submitted: June 6, 2007
- Operation: Air carrier
- Aircraft: N420US
- Make and model: Boeing 737401
- Aircraft serial: 23987
- Aircraft time: 50,436 hours, 50,436 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Cracked
- Location: Bs 880 S1l
- 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/USAA070437

## Discrepancy

CHAFE AREA FWD & AFT OF CRACK, BS 880.60, S1L, LEFT DOSAL FIN SEAT AREA.  REMOVED DAMAGED AREA & INSTALLED DOUBLER & TRIPLER, DEFECT SIZE:  2 INCH CRACK AND 12 X 1 INCH CHAFE.

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