# SDR WRNA200700005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2007
- Submitted: February 15, 2007
- Operation: Air carrier
- Aircraft: [N526UP](https://openairdocs.org/aircraft/N526UP), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21937
- Aircraft time: 89,777 hours, 16,916 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Structure
- Condition: Worn
- Location: Nr 4 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/WRNA200700005

## Discrepancy

DURING B-CHECK, FOUND NR 4 PYLON BULKHEAD STA 221.9 WORN FROM CONTACT WITH HYDRAULIC LINE AT INSIDE TOP AFT PIGEON HOLE.  REPAIRED IAW BOEING 747 SRM 54-14-03 FIG 16.

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