# SDR EOPA20130806637

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 6, 2013
- Submitted: August 7, 2013
- Operation: Air carrier
- Aircraft: [N637AL](https://openairdocs.org/aircraft/N637AL), registered now
- Make and model: Bell 407
- Registry model: [Bell 407](https://openairdocs.org/model/bell-helicopter-textron-canada-407) (OpenAirDocs)
- Aircraft serial: 53293
- Aircraft time: 7,230 hours
- System (JASC): [6730 · Rotorcraft Servo System](https://openairdocs.org/jasc/6730)
- Part: Servo
- Part number: 206076062107V
- Part serial: HR747
- Condition: Ratcheting
- Location: Collective
- Part time: 17,435 hours
- Stage of operation: DE
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EOPA20130806637

## Discrepancy

COLLECTIVE MOVEMENT WAS NOT SMOOTH.  A RATCHETY FEELING IN THE COLLECTIVE LEVER.  SERVO'S WERE SWAPPED TO THE CYCLIC CONTROLS.  PROBLEM FOLLOWED THE SERVO.

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