# SDR VNAA2014011800011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 18, 2014
- Submitted: January 23, 2014
- Operation: Air carrier
- Aircraft: [N720PS](https://openairdocs.org/aircraft/N720PS), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10178
- Aircraft time: 22,367 hours, 22,339 cycles
- System (JASC): [3440 · Independent Position Determining System](https://openairdocs.org/jasc/3440)
- Part: Computer
- Part number: 9650976003216216
- Part serial: 19198
- Condition: Failed
- Location: Egpws
- Stage of operation: TO
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA2014011800011

## Discrepancy

CREW REPORTED GROUND PROXIMITY WARNING SYSTEM (GPWS) FAIL, WINDSHEAR FAIL AND TERRAIN FAIL MESSAGES ON TAKEOFF ROLL.  CREW REJECTED TAKEOFF AND RETURNED TO GATE. MAINTENANCE TROUBLESHOT, R & R ENHANCED GROUND PROXIMITY WARNING SYSTEM (EGPWS) COMPUTER AND PERFORMED CHECKS IAW AMM.  AIRCRAFT RELEASED FOR SERVICE.

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