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Lear45 TCAS > Lear 45 General questions > Flashcards

Lear 45 General questions Flashcards

1
Q

What would trigger a LR FUEL QUANTITY LOW message on the EICAS?

A

Less than 350 pounds of fuel in either of the wing tanks.

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2
Q

How many pounds per minute can be transferred from one wing to the other with the XFLOW valve open and STBY pump on?

A

50 pounds

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3
Q

What type of engine is on the Lear 45?

A

Honeywell TFE731 - 3500lbs of thrust.

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4
Q

What 5 altitudes will trigger a response or message from the aircraft system?

A
  1. 8750 - cabin altitude warning
  2. 9500 - EMER PRESS
  3. 10,000 - red CWP message CABIN ALT
  4. 13,700 - Outflow valves will close and attempt to hold the cabin at this altitude
  5. 14,500 - pax O2 masks fall and EMER LIGHTS will come on.
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5
Q

How many lights are included in the emergency lighting system?

When do they come on?

A
  1. Lav light
  2. 5 lighted exit signs - 2 per door one on lap
  3. 4 reading lights
  4. 8 floor proximity lights - 6 white, 2 red near exit
  5. Main door egress light (upper door open)
  6. Emergency exit egress light - external

Dual generator failure or 14,500ft cabin pressure.

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6
Q

What systems does the FWSOV shut down when it is closed?

A
  1. Bleed Air Shut off valve
  2. Main fuel shut off valve
  3. Alternator shut off
  4. Hydraulics shut off
  5. TR isolation valve
  6. Ignition
  7. It arms the engine fire extinguisher
  8. Generator shut off
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7
Q

In a total electrical failure the cabin will be _____,________ and _______?

A

cold, dark and pressurized.

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8
Q

In total electrical failure what valves fail to the open position?

A
  1. The 2 bleed air valves PRSOV’s - cabin pressurization
  2. One pack valve
  3. The two engine NAC valves to heat the leading edge of the nacelles.
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9
Q

If the AUX HYD button is pushed along with the HYD XFLOW button what systems would be provided with pressure by the aux pump?

A

The landing gear and the flaps.

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10
Q

What is the main function of the aux hydraulic pump?

A

To provide back up pressure for brake operation if the main hydraulic system no longer works.

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11
Q

What does the CAS message L or R HYDRAULIC PUMP LOW indicate?

A

Main hydraulic pump pressure has fallen below 1900psi.

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12
Q

What powers the AUX HYD pump?

A

Left essential bus

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13
Q

What two things will cause a red GEAR warning on the CAS and CWP?

A

If the gear is not down and locked and:

  1. The radio altimeter indicates the plane is below 500 ft AGL
  2. The flaps are extended past 25º
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14
Q

What is the max outside air temp for APU operation?

Up to what pressure altitude can it be used?

A

125 degrees,
100 degrees if the cooling fan is not working

10,000ft
APU holds two quarts of oil

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15
Q

What 3 systems have collector messages?

A
  1. Brakes
  2. Electrical
  3. Engines
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16
Q

What voice warnings cannot be turned off?

A
  1. Overspeed, gear, Stall, and Configuration
17
Q

What 7 items can cause a configuration warning on takeoff?

A
  1. parking brake
  2. TRs
  3. Flaps
  4. Spoilers
  5. Pit trim bias
  6. 3 trims
  7. Pitch trim miscompare
18
Q

What are all the steps of a go around including buttons to push on the FGC?

A
  1. Throttle to T/O or APR as necessary
  2. PRESS TOGA SWITCH ON THROTTLE
  3. PF calls for “FLAPS 8”
  4. PM calls positive rate, PF calls gear up
  5. PF calls for FMS in display controller, NAV and Vertical speed on the FGC and reactivation of the AP.
  6. PM calls out V2 + 25, PF calls for flaps up.
19
Q

Power settings (roughly)

  1. Approach, flaps 40, gear down descending
  2. Flaps down, gear down level flight < 10,000
  3. Steep turns at 10,000 ft.
A

Power settings
1. Approach, flaps 40, gear down, descending - 58%
2. Flaps down, gear down, level flight < 10,000 - 70%
3. Steep turns @ 10,000 …………………………………… 72%
(basically any configuration in a descending approach is about 58%)

20
Q

Power settings for stalls

  1. Clean configuration @ 250kts
  2. Takeoff and approach - 20 degrees, gear down
  3. Landing stall - 40 degrees and gear down
A

Clean - Idle
Take off and approach - 55%
Landing - 55%

21
Q

How much oil does the APU hold?

A

2 quarts

22
Q

Does APU fuel usage get recorded on the total fuel of the airplane on the FMS?

A

Nope

23
Q

If the APU detects a fire what will happen?

A

A warning horn will emanate from the nose wheel well and the APU will self command to shut down. The APU fire extinguishing system is connected to the R EMER HOT bus and will activate even if the batteries are off.

24
Q

How long do you have to wait to press the APU start button after turning on the APU master switch?

A

10 seconds to allow the self test to finish.

25
Q

What must you do after turning on the APU bleed air button.

A

Wait a few seconds before the ON light comes on the button. There is always a delay.

26
Q

Do the crew need to be in the airplane with the APU running?

A

Nope

27
Q

How long must the crew wait after APU shutdown to turn off the APU master switch?

A

30 seconds

28
Q

What does the LOW indicator mean on the APU maintenance panel?

A

APU has 5 hours of operation until oil must be added.

29
Q

At what temperature will the thermal button for the fire extinguisher squibs blow?

A

220 degrees F

30
Q

What will happen if you hold down the Fire test button on the rotary for more than 30 seconds when the APU is running?

A

The APU fail circuit will be triggered and the APU will shut down.

31
Q

What is the formula for figuring out CG in % MAC?

A

(Fuselage Station - 413.77in/87.22) X 100 = % MAC

Fuselage station =

32
Q

At how many degrees nose down does an emergency descent normally happen? What are the airspeeds normally associated with the descent?

A

10 to 12 degrees nose down. 170 knots or .45 mach

Lear45 TCAS (15 decks)

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