Powerplant

Question 1

What is on the accessory gearbox. Where is it located?

Answer 1

S.H.O.F

Starter generator,hydraulic pump,oil pump,h.p. Fuel pump and f.c.u.

Bottom of engine between axial and centrifugal compressors.

Question 2

Describe the starting sequence.

Answer 2

Pressing the start button closes the starter relay,arms ignition,activtes boost pump,turns flood lights to full bright and the start button illuminates. At 8 to 10% n1 &n1 rotation throttle is advanced triggering ignition and within 10 sec light occurs. When 45% n2 is achieved starter becomes a gen and ignition as well as boost pumps shut off.

Question 3

What is the total oil capacity, when should you check it? What is the consumption limitation?

Answer 3

Total capacity is 4 qts. Check within 10 min. of shutdown. Max consumption is .023 gallons every ten hours~a qt.

Question 4

When does the oil filter button pop?

Answer 4

If contaminants cause more than 15 psi differential pressure.

Question 5

What causes a red oil pressure light?

Answer 5

A 25 psi pressure switch.

Question 6

How is oil pressure sensed?

Answer 6

Through a resistence bulb sending analog to a dcu sent to edc turned digital to mfd

Question 7

What kind of engines?

Answer 7

Willams FJ44-2C. Medium bypass turbine.