aircraft systemsFAA-published sample question (FIA, Aug 2021)
To properly purge water from the fuel system of an aircraft equipped with fuel tank sumps and a fuel strainer quick drain, it is necessary to drain fuel from the
A
fuel strainer drain.
B
lowest point in the fuel system.
C
fuel strainer drain and the fuel tank sumps.✓ Correct Answer
Explanation
Water collects at the low points of the fuel system, so PHAK Chapter 7 calls for draining the fuel strainer (gascolator) and each fuel tank sump before flight to remove water and sediment. Draining only the strainer can leave water in the tanks.
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