Service difficulty report · Pressure Switch · Boeing 767322

Difficulty date
June 30, 2006
Submitted
July 7, 2006
Operation
Air carrier
Aircraft
N662UA
Make and model
Boeing 767322
Aircraft serial
27159
Aircraft time
57,421 hours, 9,288 cycles
Engine
Pwa PW4060
Part
Pressure Switch
Condition
Leaking
Location
Fuel System
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

LEFT JETT NOZZLE LEAK. MANUALLY CYCLED LEFT JETT VALVE, OPEN SEVERAL TIMES AND LET IT DRIVE TO THE CLOSED POSITION. STARTED FUELING AGAIN AND NOZZLE STARTED LEAKING AGAIN. SUSPECT LEAKING NOZZLE TUBE. REF IPC 28-31-01-001 ITM 65 CONT OF AMIS ITEM 4202009 :REPLACED LT FUEL JETTISON NOZZLE VALVE, NO HELP. TROUBLESHOT FUEL JETTISON SYSTEM. PROBLEM TRACED TO PRESS SWTCH. CLEANED TERMINALS OF JETTISON PUMP PRESSURE SWITCH. SYSTEM TESTED OK WITH NO LEAKAGE. OK FOR SVC.