PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

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Prepare for the PSA Airlines Canadair Regional Jet Systems Exam. Study with comprehensive flashcards and multiple choice questions, each with hints and explanations. Get ready to excel!

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What is the lowest N2 setting commanded by FADEC for idle?

Flight idle
Ground idle
Maximum idle
Low idle

The correct answer is: Ground idle

The lowest N2 setting commanded by FADEC (Full Authority Digital Engine Control) for idle is the ground idle. This setting is specifically designed to provide sufficient power to the engine while the aircraft is on the ground, allowing for engine operation at low thrust where the aircraft is stationary. When the aircraft is on the ground, ground idle is crucial as it allows engines to run efficiently while still being ready for quick applications of power if needed, such as during taxiing or before takeoff. Ground idle is generally lower than flight idle, which is utilized once the aircraft is airborne and requires a higher N2 setting to maintain altitude and performance. Therefore, the reason ground idle is the correct choice is that it is specifically set for the idle condition while the aircraft is on the ground, reflecting the lowest operational threshold necessary to keep the engines running with minimal power, thus optimizing fuel efficiency and engine wear.