IRImplementing rule
CS 25.952Fuel system analysis and test
(a)Proper fuel system functioning under all probable operating conditions must be shown by analysis and those tests found necessary by the Agency. Tests, if required, must be made using the aeroplane fuel system or a test article that reproduces the operating characteristics of the portion of the fuel system to be tested.
(b)The likely failure of any heat exchanger using fuel as one of its fluids may not result in a hazardous condition.
IR · CS 25.952 — CS-25 · ED Decision 2003/2/RM · CS-25 Easy Access Rules · EAR revision 26 Jan 2023