# SDR 9716996642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N642NW
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21942
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Condition: Cracked
- Location: Nr 2 Pylon
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9716996642

## Discrepancy

DURING M-CHECK AND PRIOR TO SERVICE, FOUND CRACKS EXTENDING FROM FASTENER HOLE AT RIGHT TOP OF REAR ENGINE MOUNT BULKHEAD FRAME NAC STA 222, NR 2 PYLON.  REPAIRED PER EA 66-120348.

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