What was found
DURING SCHEDULED PHASE INSP, FOUND RELIEF VALVE BACKED OUT OF FUEL FILTER PN 50-389110. THIS FIREWALL-MOUNTED FILTER HAS A BALL-AND-SPRING TYPE RELIEF VALVE THREADED INTO THE FILTER HSG (PN 02W760-140). THE MECHANIC FOUND THE VALVE SEAT AND BALL COMPLETELY BACKED OUT INTO THE HSG AND DISPLACED ALLOWING FUEL TO CONSTANTLY BYPASS THE FILTER. VALVE SEAT (PN 02FC213) IS NORMALLY SECURED INTO THE FILTER HSG BY 'STAKING' THE THREADS. THIS IS THE THIRD FILTER ASSY IN 8 MONTHS WE HAVE FOUND IN THIS CONDITION (UNSTAKED AND DISPLACED) IN OUR FLEET OF 60+. IT IS ALSO INTERESTING TO NOTE THE VALVE BACKED OUT UPWARDS AGAINST GRAVITY AND SPRING PRESSURE. THE RELIEF VALVE WAS RE-INSTALLED AND STAKED.