# SDR M3XA2018010401

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 2018
- Submitted: January 9, 2018
- Operation: Air carrier
- Aircraft: [N253MT](https://openairdocs.org/aircraft/N253MT), registered now
- Make and model: Urocop EC 135 P2
- Registry model: [Urocop EC 135 P2](https://openairdocs.org/model/eurocopter-deutschland-ec-135-p2) (OpenAirDocs)
- Aircraft serial: 1153
- Aircraft time: 1,682 hours, 4,833 cycles
- System (JASC): [6730 · Rotorcraft Servo System](https://openairdocs.org/jasc/6730)
- Part: Servo
- Part number: L673M20A1012
- Part serial: 01299
- Condition: Leaking
- Location: Collective
- Part time: 1,682 hours, 4,833 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/M3XA2018010401

## Discrepancy

PL FOR CYCLIC BACK PRESSURE CAUSING RESISTANCE TO PILOT INPUT.  PATIENT WAS PICKED UP, ENROUTE, WHEN THE PILOT FELT HIS CYCLIC INPUT HAD REARWARD PRESSURE.  PILOT MADE PL AT A HOSPITAL WITHOUT INCIDENT.  UPON MECHANICS INSPECTION FOUND COLLECTIVE SERVO LEAKING.  SERVO REPLACED AND OPERATIONAL CHECK NORMAL.

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