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Gulfstream 550 > Powerplant > Flashcards

Powerplant Flashcards

1
Q

Max engine TGT prior to start

A

150°C

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2
Q

Max takeoff TGT

A

900°C 5 min both engines/ 10 single engine

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3
Q

Max continuous TGT

A

860°C no time limitation

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4
Q

Max crosswind component for engine start

A

30knots

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5
Q

Max tailwind for engine start

A

20 knots

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6
Q

The preferred method of engine air start is

A

Automatic

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7
Q

What engines are on the 550?

A

Rolls-Royce BR 710C4-11

Rated for 15385 pounds of thrust

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8
Q

During a normal engine start, ignition icons will be seen when the pilot completes what action?

A

Move the fuel control switch to RUN

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9
Q

What should be accomplished if engine vibration levels .80HP or .80LP?

A

Engine thrust should be reduced, and possibly shut down if other parameters are abnormal

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10
Q

When will fadec automatically accelerate the engine to high idle speed?

A

When flaps are set to 39°

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11
Q

What will happen if a thrust reverser deploys inflight?

A

The fadec will command idle fuel flow, and the throttle will remain in its last commanded position.

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12
Q

If TGT exceeds the max permissible value during an engine start, what action will be taken by the fadec?

A

On the ground, engine start will terminate automatically.

In the air, the start will continue

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13
Q

Where are the standby engine instruments displayed?

A

On standby engine instrument page in MCDU 1

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14
Q

How can residual TGT be reduced prior to engine start?

A

Perform an engine cranking cycle, or allow the engine to crank longer during a normal engine start cycle

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15
Q

What is the min bleed air pressure for engine start?

A

40 psi

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16
Q

Will an engine start if the power lever is not idle

A

Yes, an amber L or R THROTTLE CONFIGURATION CAS message will illuminate and the engine will accelerate to the thrust setting of the lever position

17
Q

If peak EVM values exceed the alert level during engine start, what action must be performed?

A

Normally no action is required, this condition is usually normal

18
Q

What are the indications if the Fadec detects an anomaly during start?

A

The start sequence will be aborted and an amber CAS AUTOSTART ABORT message will be displayed

19
Q

How is the fadec reset after an auto start abort?

A

By selecting the START MASTER switch to OFF, or selecting the L/R fuel control to off

20
Q

When should SVO and IGN indication extinguish after start

A

At approximately 47% HP

21
Q

When should TGT split between engines be reported to maintenance?

A

Greater than 65°C

22
Q

What are the engine duty cycle limits?

A

3min on, 15 secs off for 3 start attempts, then wait 15 min for the next attempt

23
Q

What will cause a BLUE SWITCH CONFIGURATION CAS

A

Selecting both crank and start master switches

24
Q

What will cause an AMBER THROTTLE CONFIGURATION CAS

A

Throttles not in idle position prior to start

25
Q

What does it mean if a blue L or R ALT CTRL CAS message is illuminated prior to engine start?

A

The engines have switched to alternate control mode (LP)

26
Q

How is the Fadec system switched back to the normal mode if it has switched to ALT control

A

Select the sensor page on the display controller, then select ENG DATA and deselect L or R ALT CTRL

27
Q

Can the aircraft be dispatched with the engines in ALT control?

A

No

28
Q

In a tailwind condition, why is it important to verify positive LP RpM prior to selecting fuel control to run?

A

The Fadec only senses LP rpm, but it cannot tell the difference between positive or negative rotation.

29
Q

If after starting both engines, the right pack is off and the isolation valve is OPEN, What is the cause.

A

Start master is still selected on

30
Q

What are correct indications for an engine vibration monitor test?

A

An Amber CAS ENGINE EXCEEDANCE , and EVM indications between 1.8-2.2

31
Q

What is the normal power source for the Fadec and when does it normally turn on?

A

It has its own dedicated source , PMA (permanent magnetic alternator), and it comes on above 35%HP

32
Q

What is the LP RPM that is to be avoided on the ground (keep out zone)

A

60-80% LP

33
Q

What are some items that can cause the Fadec to automatically turn on the IGN

A

Normal engine start
Excessive rain
Fadec senses a malfunction

34
Q

When is an engine start fully protected

A

When using the start master, on the ground only

35
Q

On landing, the thrust reverser should be idle/stowed by what speed?

A

60 knots

36
Q

What are the methods for starting engines?

A

Automatically
Starter assisted
Windmilling

37
Q

What are the limitations for static ground runs

A

Keep out zone of 66-80 LP

38
Q

How long should the engines run at idle prior to takeoff

A

5min

39
Q

What is the max altitude for guaranteed start?

A

25000

Gulfstream 550 (17 decks)

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