# SDR UIEA200700110

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 6, 2007
- Submitted: March 14, 2007
- Operation: Air carrier
- Aircraft: N524MC
- Make and model: Boeing 747-2D7B
- Registry model: [Boeing 747-2D7B](https://openairdocs.org/model/boeing-747-2d7b) (OpenAirDocs)
- Aircraft serial: 21784
- Aircraft time: 93,958 hours, 19,481 cycles
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Condition: Cracked
- Location: Nr 1 Pylon
- 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/UIEA200700110

## Discrepancy

NR 1 PYLON PRECOOLER EXHAUST CUT-OUT SKIN ASSEMBLY AND DOUBLER FOUND CRACKED.  SKIN ASSEMBLY TRIMMED OFF FILLER FABRICATED AND INSTALLED AS PER BOEING MESSAGE 1-289015678-4 AND REMOVED FASTENERS INSTALLED AS PER BOEING MESSAGE 1-289015678-8 AND FAA FORM 8100-9.

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