# SDR UPS07550556

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2007
- Submitted: August 31, 2007
- Operation: Air carrier
- Aircraft: [N415UP](https://openairdocs.org/aircraft/N415UP), registered now
- Make and model: Boeing 757-24APF
- Registry model: [Boeing 757-24APF](https://openairdocs.org/model/boeing-757-24apf) (OpenAirDocs)
- Aircraft serial: 23855
- Aircraft time: 23,181 hours, 15,755 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Part number: 311N3271
- Condition: Chafed
- Location: Nr 1 Nacelle
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UPS07550556

## Discrepancy

INSPECTION TYPE:C NR 1 PYLON AFT BULKHEAD OUTBD SIDE LOWER CORNER CHAFED.  BULKHEAD MILL WAS DONE ON TRAV NR T7/696069 PER PRELIMINARY 1 EA 757- 5453-27-A1725 STEP 1.  HFEC WAS DONE ON TRAV NR T7/696069 PER PRELIMINARY EA 757-5453-27-A1725 STEP 2. BLEND IS 2.1 L BY 1.25W BY .080D PER PRELIMINARY 1 EA 757-5453-27-A175 STEP 3. REMAINING THICKNESS ON FLANGE IS .120 PER PRELIMINARY 1 EA 757-5453-27-A1725 STEP 4.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.