# SDR 2005FA0000443

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2005
- Submitted: March 25, 2005
- Operation: General aviation
- System (JASC): [3420 · Attitude and Direction Data System](https://openairdocs.org/jasc/3420)
- Part: Motor
- Part number: 2300626020
- Condition: Intermittent
- Location: Indicator
- Component: Attitude Direct, Collins, ADI85A
- Component part number: 6224808002
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005FA0000443

## Discrepancy

THE MOTORS HAVE HIGH RESISTANCE BETWEEN THE BRUSHES AND ARMATURE OF THE MOTOR. THIS CAUSES THE MOTOR TO STICK INTERMITTENTLY, CAUSING A FALSE ATTITUDE DISPLAY IN THE COCKPIT.  CREW REPORTED ON CLIMB OUT, THE ADI DISPLAYED AN ATTITUDE FLAG.  PITCH AXIS DID NOT RESPOND TO THE ATTITUDE CHANGE.

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