# SDR 9504606305

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N665US](https://openairdocs.org/aircraft/N665US), registered now
- Make and model: Boeing 747451
- Aircraft serial: 23820
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Part number: 322U411020
- Condition: Cracked
- Location: Nr 1 Eng Pylon
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9504606305

## Discrepancy

DURING OVERNIGHT LINE CHECK, A CRACK WAS FOUND ON THE NR 1 ENGINE PYLON INBOARD SKIN AT THE FORWARD UPPER CORNER OF THE NR 452 PANEL CUTOUT.  STOP DRILLED CRACK AND REPAIRED PER EA 63-96730.

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