CS-E 670 Contaminated Fuel

(See AMC E 670)

(a)Evidence must be provided that the complete Engine fuel system is capable of functioning satisfactorily with fuel containing the maximum quantity of liquid/solid contamination, likely to be encountered in service, for a period sufficient to ensure that Engine malfunctioning as a result of this cause will not occur.

(b)The evidence must provide assurance that –

(1)The fuel system is not adversely affected by contamination which can pass through any filtration provided, either immediately or during subsequent running, and

(2)It will be possible for the Engine to complete a period equal to at least half the maximum flight duration of the aeroplane in which it is likely to be installed, with the same contaminant level, from the point at which indication of impending filter blockage is first given.

[Amdt. No.: E/1]