How is the AMAD connected to the Auxiliary Power Unit (APU)?

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Study for the EAWS Phase III Boeing EA-18G Growler Test. Prepare with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready to ace your exam!

Multiple Choice

How is the AMAD connected to the Auxiliary Power Unit (APU)?

Explanation:
AMAD is the Aircraft Mounted Accessory Drive, the central shaft that powers the aircraft’s accessories. To start an engine, the APU provides bleed air to the air turbine starter. The ATS uses that pneumatic energy to spin the AMAD, which then drives the engine’s accessories (like pumps and generators) long enough to bring the engine up to speed and start. This is a pneumatic link via the ATS, not a heat-exchanger, electrical, or hydraulic connection. The other options don’t supply the initial drive needed to rotate the AMAD during start.

AMAD is the Aircraft Mounted Accessory Drive, the central shaft that powers the aircraft’s accessories. To start an engine, the APU provides bleed air to the air turbine starter. The ATS uses that pneumatic energy to spin the AMAD, which then drives the engine’s accessories (like pumps and generators) long enough to bring the engine up to speed and start. This is a pneumatic link via the ATS, not a heat-exchanger, electrical, or hydraulic connection. The other options don’t supply the initial drive needed to rotate the AMAD during start.

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