§29.997 Fuel strainer or filter

There m ust b e a fu el strainer or filter between the fu el tan k o utlet an d th e in let o f the first fuel system com ponent whi ch i s suscept ible t o fuel contamination, including but not l imited t o t he fuel m etering d evice o r an engine positive displacement pump, whichever is nearer the fuel tank outlet. This fuel strainer or filter must: (a) Be accessible for draining and cleaning and must incorporate a scr een or elem ent which is easily removable; (b) Have a sediment t rap and drai n, except that it need not have a drain if the strainer or filter is easily removable for drain purposes; (c) Be m ounted so t hat i ts wei ght is not supported by t he connect ing l ines or by the inlet or outlet connections of the strainer or filter itself, unless adequate strength margins under all loading conditions are provided i n t he l ines and connections; and (d) Provide a m eans to rem ove from the fuel any contaminant which would jeopardise the flow of fuel through rot orcraft or engi ne fuel sy stem components required for proper rot orcraft or engine fuel system operation.