Service difficulty report · Valve · Cessna S550

Difficulty date
April 24, 2003
Submitted
May 7, 2003
Operation
Air carrier
Aircraft
N126QS
Make and model
Cessna S550
Aircraft serial
S5500126
Engine
Pwa JT15D4
Part
Valve
Part number
674101
Part serial
1222
Condition
Corroded
Location
Lt Anti Ice Air
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

DURING REPLACEMENT OF PERI SEALS ON THE FORWARD SIDE OF THE ENGINE ANTI ICE SYSTEM, THE ANTI ICE VALVE HAD TO BE REMOVED. WHILE REMOVING THE ELECTRICAL CONNECTOR, DIFFICULTY WAS ENCOUNTERED BECAUSE THE CONNECTOR WAS OVER TORQUED OR CORROSION HAD CREATED A PROBLEM. IN THE PROCESSES OF REMOVING THE PLUG, THE SOCKET ON THE ELECTRICAL SOLENOID VALVE SEPARATED FROM THE BODY. THIS RESULTED INTO BEING AN EXPENSIVE REPAIR WHEN THE UNIT WAS SENT BACK TO THE MFG. IT IS HIGHLY RECOMMENDED TO BE SURE THE THREADS ON THE CONNECTORS ARE CLEAN AND PROPER TORQUE USED WHEN SECURING THE ELECTRICAL CONNECTOR. THE REPAIRED UNIT WAS REINSTALLED AND OPS CHECKED GOOD.

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