# SDR P5CA0801568

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2008
- Submitted: August 6, 2008
- Operation: Air carrier
- Aircraft: [N451PA](https://openairdocs.org/aircraft/N451PA), registered now
- Make and model: Boeing 747-46NF
- Registry model: [Boeing 747-46NF](https://openairdocs.org/model/boeing-747-46nf) (OpenAirDocs)
- Aircraft serial: 30809
- Aircraft time: 32,216 hours, 5,474 cycles
- System (JASC): [3150 · Central Warning](https://openairdocs.org/jasc/3150)
- Part: Warning Light
- Condition: Illuminated
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/P5CA0801568

## Discrepancy

DURING PUSHBACK AND ENGINE START "HYD DEM 3" STATUS MESSAGE APPEARED.  AIRCRAFT CAME BACK TO BLOCKS.  "ITEM WAS DEFERRED IAW MEL 29-11-2-2.  NO OTHER ISSUES.  (A)

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