An oil filter I could understand
Really?......For a GE CF6 with lube oil pressure just above LOP trigger of 10 PSI @ max. motoring.....
resulting in only a few PSI for a thick fluid in the scavenge filter?
Fuel pressure in the fuel filter will be anyway above 25 PSI during the dry motoring cycle
and this will be sufficient for a leak check.
@grounded27
if the intermittent ENG FUEL FILTER (delta P 21-26 psid) messages are more regular it
will be time to reduce the filter element replacement interval. (normal 4500FH).
A reduced interval (150 FH for the 1st 1000 FH) should already be in the maintenance program
after delivery, fuel tank repair, volcanic ash encounter and fuel tank contamination
(and after biocide treatment!)
But as already stated AMM (and company additions) will contain the proper procedures.
