Service difficulty report · Nut · Robsin R44RAVENII

Difficulty date
September 18, 2012
Submitted
September 14, 2015
Operation
General aviation
Make and model
Robsin R44RAVENII
Engine
Lyc IO540AE1A5
Part
Nut
Part number
D4524
Condition
Loose
Location
Hyd Pump
Stage of operation
IN
How discovered
9
Nature of condition
K
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) PILOT REPORTED HYDRAULIC LEAK AT PRESSURE FITTING OF PUMP. HYDRUALIC PUMP REMOVED AND TEE FITTING REMOVED FROM PUMP. AFTER INSPECTION, IT WAS NOTED THAT THE COMBINATION OF NUT, RETAINER AND PACKING WAS NOT MAINTAINING ENOUGH PRESSURE AGAINST PUMP TO STOP FLUID LEAK.