# SDR 0601616743

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2006
- Submitted: July 20, 2006
- Operation: Air carrier
- Aircraft: N643NW
- Make and model: Boeing 747249F
- Aircraft serial: 22245
- Aircraft time: 88,641 hours, 20,437 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Frame
- Condition: Cracked
- 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/0601616743

## Discrepancy

DURING H-CHECK FOUND CRACKS IN NR 1 PYLON REAR MOUNT BULKHEAD FRAMES.  REPAIRED PER EA 67-206278.

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