# SDR KNNA20100029

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2010
- Submitted: July 27, 2010
- Operation: Air carrier
- Aircraft: N252TR
- Make and model: Boeing 737228
- Aircraft serial: 23001
- Aircraft time: 44,941 hours, 35,989 cycles
- System (JASC): [5330 · Fuselage Main, Plate/Skin](https://openairdocs.org/jasc/5330)
- Part: Skin
- Condition: Cracked
- Location: Zone 200
- Part time: 44,941 hours, 35,989 cycles
- Stage of operation: IN
- How discovered: E
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/KNNA20100029

## Discrepancy

DURING C-CHECK ACCOMPLISHMENT OF AD 2008-11-04 NDT INSP REVEALED CRACKS AT THE L-1 DOOR UPPER HINGE CUTOUT.

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