Random Questions Flashcards

1
Q

At what % N2 does the ECY command the FCU fuel solenoid shutoff valve to open? (i.e. introduce fuel?)

A

7.3% N2

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2
Q

What difference in fuel pressure on either side of the fuel filter triggers a ‘Fuel IMP Bypass’ Caution to be displayed?

A

4psi

Caution extinguishes below 2psi

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3
Q

What makes up the LP rotary group on the FJ44-4A QPM engines?

A

Single stage Fan

Three stage axial intermediate pressure compressors

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4
Q

What makes up the HP rotary group on the FJ44-4A QPM engines?

A

Single stage centrifugal compressor

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5
Q

Why is there a bleed valve between the axial IP compressor and the centrifugal HP compressor?
When is it open and closed?

A

Axial IP Compressor provides too much flow at low engine rpm so it is scheduled to open during acceleration, deceleration and power settings below 75.2% N2 and close above 77.7% N2

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