# SDR 2005F00004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2004
- Submitted: January 19, 2005
- Operation: Air carrier
- Aircraft: [N417AT](https://openairdocs.org/aircraft/N417AT), registered now
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 417
- System (JASC): [3417 · Air Data Computer](https://openairdocs.org/jasc/3417)
- Part: Adc
- Part number: 7000700951
- Condition: Failed
- Location: Nr 1
- Part time: 10,475 hours
- Stage of operation: TO
- How discovered: O
- Nature of condition: O
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005F00004

## Discrepancy

DURING TAKEOFF ROLL, CAPTAIN SIDE AIRSPEED FAIL FLAP CAME OUT, THE TRUE AIRSPEED SHOWED ONLY DASHES AND THE STANDBY ALTIMETER STUCK MOMENTARILY.  TAKEOFF ABORTED.  REPLACED NR 1 AIR DATA COMPUTER.  (M)

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