# SDR 9709986611

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N611US
- Make and model: Boeing 747251B
- Aircraft serial: 20356
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Bulkhead
- Condition: Cracked
- Location: Nr 4 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/9709986611

## Discrepancy

DURING TRANSITION CHECK, FOUND CRACK IN NR 4 PYLON REAR ENGINE MOUNT BULKHEAD STRAP NACELLE STA 223.  REPAIRED PER EA 66-150141.

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