# SDR IPXA2014020381743

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 22, 2014
- Submitted: February 3, 2014
- Operation: Air carrier
- Aircraft: [N579UP](https://openairdocs.org/aircraft/N579UP), registered now
- Make and model: Boeing 747-45E
- Registry model: [Boeing 747-45E](https://openairdocs.org/model/boeing-747-45e) (OpenAirDocs)
- Aircraft serial: 26062
- Aircraft time: 85,009 hours, 14,563 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Part number: 321U223130
- Condition: Cracked
- Location: Nr 4 Nacelle
- 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/IPXA2014020381743

## Discrepancy

INSPECTION C, NR 4 NACELLE STATION 282.93 BULKHEAD FOUND CRACKED JUST ABOVE OTBD SPRING BEAM FWD BEARING HOUSING.  REPAIRED IAW RI-54-00-10443, REV A & EO B747-5410-53293-A.   MAJOR REPAIR.

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