Service difficulty report · Pressure Switch · Lear 45LEAR

Difficulty date
May 21, 2010
Submitted
January 4, 2011
Operation
Air carrier
Make and model
Lear 45LEAR
Aircraft time
7,147 hours
Engine
Garrtt TFE7312
Part
Pressure Switch
Part number
7629001004001
Condition
Leaking
Location
Lt Hyd System
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

PILOT REPORTED AN HYD LOW CAS MESSAGE IN FLIGHT. UPON INVESTIGATION ON GROUND BY MX, IT WAS DISCOVERED THAT THERE WAS HYD FLUID ON LOWER FUSELAGE. IT WAS LATER DISCOVERED THAT AUX HYD LOW PRESSURE SWITCH S9 (LT ENGINE) WAS LEAKING BETWEEN THE ELECTRICAL CONNECTOR AND SWITCH HYD CORE. PACKING WAS VISIBLE AND CONNECTOR BASE WAS BENT.