Engine Fuel System and Component Icing Test

Scope:

This ARP provides recommended practice on the considerations and methodology to demonstrate acceptable performance of the Engine components / fuel system, and APU, whilst operating throughout the flight cycle / engine duty for continuous operation with iced fuel and short duration operation with a snowshower resulting from release of accreted ice from fuel washed surfaces, where no anti-icing additives are present (e.g. Fuel System Icing Inhibitor FSII or alternative). Two scenarios must be considered when demonstrating the capability of Engine components / fuel system, and APU to operate with fuel borne ice to satisfy certification regulations applications in support of FAA Part 23 and Part 25, CFR Part 33, and corresponding EASA CS-E regulations, and equivalent Military application requirements.

Rationale:

This Aerospace Recommended Practice provides the considerations appropriate for Engine components / fuel system, and APU demonstration of tolerance to fuel borne ice for (i) continuous operation and (ii) transient snowshower operation, and enables demonstration of fuel system tolerance to fuel borne ice by a consistent philosophy across the industry.

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