# SDR NWAA082366623

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2008
- Submitted: May 28, 2008
- Operation: Air carrier
- Aircraft: N623US
- Make and model: Boeing 747251B
- Aircraft serial: 21705
- Aircraft time: 100,298 hours, 17,520 cycles
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Frame
- Condition: Cracked
- 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/NWAA082366623

## Discrepancy

DURING M-CHECK FOUND CRACK IN NR 4 PYLON NACELLE BULKHEAD FRAME AT NAC STA 221.90 LT.  REPAIRED PER EA 66-212663.

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