# SDR UIEA200800021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2008
- Submitted: February 21, 2008
- Operation: Air carrier
- Aircraft: [N506MC](https://openairdocs.org/aircraft/N506MC), registered now
- Make and model: Boeing 747-2D3B
- Registry model: [Boeing 747-2D3B](https://openairdocs.org/model/boeing-747-2d3b) (OpenAirDocs)
- Aircraft serial: 21252
- Aircraft time: 91,039 hours, 18,903 cycles
- System (JASC): [5730 · Wing, Plate/Skin](https://openairdocs.org/jasc/5730)
- Part: Skin
- Condition: Cracked
- Location: Lt Wing
- 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/UIEA200800021

## Discrepancy

LT WING LEADING EDGE LOWER SURFACE, OUTBOARD FUELING DOOR FRAME CUT-OUT HAS A COMPOSITE CRACK AT OUTBOARD SIDE, FORWARD EDGE.  PERMANENT REPAIR ACCOMPLISHED AS PER B747-200 SRM 51-40-09 FIG 18 SHEETS 3 AND 5 AND SRM 51-40-12, PREPREG 250 DEGREES F CURE.  ALSO, REFERENCE ATLAS AIR EO 4757A414.

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