# SDR UPS06547235

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2006
- Submitted: June 28, 2006
- Operation: Air carrier
- Aircraft: [N409UP](https://openairdocs.org/aircraft/N409UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23731
- Aircraft time: 22,265 hours, 15,061 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Part number: 311N32712
- 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/UPS06547235

## Discrepancy

INSPECTION TYPE:C NR 1 PYLON AFT BULKHEAD LOWER FLANGE HAS DEEPLY CHAFED AREAS ON LT & RT SIDES.  ROUTED TO FAB SHOP TO MILL CHAFED AREAS.  AFTER MILLING LEFT SIDE IS A .160 RIGHT SIDE IS AT .165 REF PRELIMINARY EA 757-5453-27-A1370  03-16-06; HFEC INSP PER NTM  51-00-00 IAW EA 757-5453-27-A1370.  NO CRACKS NOTED MILLED DAMAGED AREAS AND INSTALLED REPAIR.

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