# SDR AC2A202501209201

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2025
- Submitted: January 20, 2025
- Operation: Air carrier
- Aircraft: [N927SC](https://openairdocs.org/aircraft/N927SC), registered now
- Make and model: Skrsky S92A
- Aircraft serial: 920310
- Aircraft time: 3,180 hours, 3,637 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Servo
- Part number: 9241015800114
- Part serial: B03301176
- Condition: Leaking
- Location: Main Rotor
- Part time: 3,180 hours, 3,637 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AC2A202501209201

## Discrepancy

APPROXIMATELY 10 MINUTES INTO THE FLIGHT, THE AIRCRAFT EXPERIENCED A NO. 2 HYDRAULIC PUMP LOW CAS AND THE AIRCRAFT RETURNED TO BASE. UPON INSPECTION, WE DISCOVERED THAT THE FORWARD SERVO SEAL WAS LEAKING EXTENSIVELY, WHICH LIKELY CAUSED THE NO. 2 HYDRAULIC SYSTEM TO RUN DRY.  THE SEAL IS LEAKING STATIC AS JUST AS FAST AS THE NO 2 HYDRAULIC SYSTEM IS SERVICED.

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