# SDR 98ZZZM473

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N303TW](https://openairdocs.org/aircraft/N303TW), registered now
- Make and model: Boeing 747257B
- Aircraft serial: 20116
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Skin
- Condition: Chafed
- Location: Nr 4 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/98ZZZM473

## Discrepancy

DURING C-CHECK INSPECTION DISCOVERED CHAFING DAMAGE ON THE UPPER EDGE OF THE NR 4 PYLON OUTBOARD SKIN.  REPAIRED BY TRIMMING OUT THE DAMAGE, FABRICATING AND INSTALLING REPAIR STRAP AND EXTERNAL DOUBLER.  REPAIRED IAW EVERGREEN AIR CENTER, ENGINEERING CHANGE/REPAIR AUTHORIZATION NR N303TW-54-003EAC.  (M)

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