# SDR UPS07550420

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2007
- Submitted: August 10, 2007
- Operation: Air carrier
- Aircraft: [N431UP](https://openairdocs.org/aircraft/N431UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 25462
- Aircraft time: 17,540 hours, 12,053 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Part number: 311N32713
- Condition: Chafed
- 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/UPS07550420

## Discrepancy

INSPECTION TYPE:C NR 1 PYLON AFT BULKHEAD LOWER OUTBOARD CORNER IS CHAFED.  BULKHEAD MILL WAS DONE ON TRAV T7/693383 PER PRELIMINARY 1 EA B757-5453-27-A1716.  HFEC WAS DONE ON TRAV T7/693383 PER PRELIM EA B757-5453-27-A1716.  LENGTH OF BLEND 2.1 X 1.250W X .080D PER PRELIMINARY 1 EA B757-5453-27-A1716.

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