# SDR CA130529003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2013
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Bombdr DHC8400
- Engine: Pwc PW150A
- Propeller: Rotol CR4086123F17
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Relief Valve
- Part number: 9752565
- Condition: Malfunctioned
- Location: Hyd System
- 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/CA130529003

## Discrepancy

(CAN) DURING THE CRUISE, THE CAPTAIN NOTICED THE HYDRAULIC QTY ON THE NR 1 SYS HAD REDUCED FROM 55 PERCENT TO 40, BEFORE DEPARTURE THE CREW HAD SEEN THE QUANTITY ABOUT 75-80 PERCENT.  A TECHLOG ENTRY WAS MADE.  THE ENGINEERS REPORTED THAT A LEAK IN THE LOWER FUSELAGE UNDER THE CABIN, BENEATH THE WING, WAS FOUND. WHEN WE LT THE ACFT THE QTY WAS 15 PERCENT.  BALANCE RELIEF VALVE LEAKING, PART REPLACED.

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