# SDR CA110922013

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2011
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft time: 859 hours
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Servo
- Part number: 7079785
- Condition: Faulty
- Location: Hyd System
- Part time: 730 hours
- Stage of operation: CR
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA110922013

## Discrepancy

(CAN) ENROUTE, THE NR 2 HYDRAULIC SERVO CAS MESSAGE ILLUMINATED INTERMITTENTLY. ACFT DIVERTED, AFTER LANDING THE NR 2 HYDRAULIC SERVO CAS MESSAGE WAS ON STEADY.  SYSTEM WAS TROUBLESHOT AND FAULTY SWITCH ON THE NR 3 SERVO, LOWER POSITION, WAS REPLACED WITH NEW ONE. SYSTEM LEAK AND FUNCTION CHECKED OK.  ACFT RETURNED TO SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.