AMC1 27.1337(b) Powerplant
instruments
ED Decision 2023/001/R
FUEL QUANTITY INDICATOR
This AMC supplements FAA AC 27.1337 and relates to the susceptibility of the fuel quantity indication accuracy to water contamination.
As provided in CS-27, the fuel system shall be designed to resist to different natures and levels of fuel contamination.
For water contamination, CS 27.951(c) assumes the presence of free water in fuel already saturated with water. To demonstrate compliance with CS 27.1337(b), the applicant should take into account the potential water contamination as specified in CS 27.951(c).
It is expected that the fuel quantity indication should not be affected by water contamination as specified in CS 27.951(c).
The fuel level sensors should be designed to prevent an accumulation of water that could lead to an erroneous indication of the fuel quantity.
[Amdt 27/10]
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