aircraft systemsFAA-published question bank (Private Pilot, 2008)
One purpose of the dual ignition system on an aircraft engine is to provide for
A
improved engine performance.✓ Correct Answer
B
uniform heat distribution.
C
balanced cylinder head pressure.
Explanation
PHAK Chapter 7 states that the dual ignition system, with two magnetos and two spark plugs per cylinder, increases safety through redundancy and improves combustion, giving better engine performance. It is not intended to distribute heat or balance cylinder pressures.
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