# SDR KCSA091006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 5, 2009
- Submitted: February 5, 2009
- Operation: Air carrier
- Aircraft: [N703CK](https://openairdocs.org/aircraft/N703CK), registered now
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 21939
- Aircraft time: 92,019 hours, 17,642 cycles
- System (JASC): [5411 · Nacelle/Pylon, Frame/Spar/Rib](https://openairdocs.org/jasc/5411)
- Part: Rib
- 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/KCSA091006

## Discrepancy

NR 4 PYLON HAS A 4 INCH CRACK ON THE NAC STA 236 BULKHEAD INTERNAL RIB AT PYLON SHUTOFF VALVE INBOARD SUPPORT ROD MOUNT BRACKET.

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