Service difficulty report · Shutoff Valve · Gulstm GIV

Difficulty date
November 16, 2016
Submitted
January 5, 2017
Operation
Air carrier
Aircraft
N112WJ
Make and model
Gulstm GIV
Aircraft serial
1112
Aircraft time
16,214 hours, 6,219 cycles
Part
Shutoff Valve
Part number
3846
Part serial
638A
Condition
Malfunctioned
Location
Hydraulic Sys
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

HYDRAULIC UTILITY PUMP SHUTOFF VALVE SOLENOID WOULD NOT DE-ENERGIZE. BROUGHT AIRCRAFT IN FOR MAINTENANCE. REPLACED UNIT WITH OVERHAULED UNIT P/N 3846 (1159SCH217-5), S/N 638A. UNIT STAYED OPEN AND WOULD POP THE CIRCUIT BREAKER. RETURNED UNIT FOR EXCHANGE.