Q and A Learjet 60 (Pneumatics/Air conditioning/Pressurization)

Question 0

High Press (HP) bleed air is used for ______. (4)

Answer 0

Press jet pump
Windshield Alcohol
Cab Temp control
Wing anti-ice

Question 1

Low Press (LP) bleed air is used for _________. (4)

Answer 1

Windshield anti-ice
Wing anti-ice
Cabin Pressurization and Control
Hyd reservoir press

Question 2

The bleed air sw controls ________. (3)

Answer 2

HP shutoff valve
BA shutoff valve
EMER press valve

Question 3

With DC failure, (EMER press Valves / Bleed Air SOV / HP SOV) fail _________.

Answer 3

Closed
Open
Open

Question 4

Bleed Air sw in EMER ( Bleed Air SOV / EMER Press valve / HP SOV) is _________.

Answer 4

Closed
Open
Closed

Question 5

Bleed air sw in ON, ( Bleed Air SOV / Emer press Valve / HP SOV) is _________.

Answer 5

Open
Closed
Open

Question 6

Bleed air sw in OFF, the ( Bleed air SOV, EMER press valve / HP SOV) is __________.

Answer 6

Closed
Closed
Open

Question 7

Bleed air sw ON, EMER press activates automatically at ________.

Answer 7

9500’ or 14 500’ Cabin altitude depending on the controller setting

Question 8

For EMER press not to occur until 14 500 cab alt, _______. (3)

Answer 8

Landing altitude set at > than 8000’
Descent of at least 1000’ from cruise
Below FL250

Question 9

With EMER press, crew and cab Temp are ________.

Answer 9

INOP,unconditioned hot air flows in the Cabin

Question 10

The (low (9500) / high (14500)) aneroids will reset at _____.

Answer 10

8300

13 300

Question 11

The CAB AIR sw controls the _______.

Answer 11

Flow control valve

Question 12

The Flow Control Valve fails to _________.

Answer 12

Open Position

Question 13

To dampen surges in engine bleed air the flow control valve_________ when Open.

Answer 13

modulates

Question 14

Cabin Air consists of _____ conditioned by _____ thru ______.

Answer 14

LP Bleed Air
Ram Air
an air-to-air HT exchanger

Question 15

Cabin and crew Temp controls control __________.

Answer 15

Separate torque motors for hot-cold air mixing control

Question 16

In a DUCT overheat condition _________. (2)

Answer 16

Duct Temp limiters de-energize torque motors

Temp control valves Close

Question 17

With Cabin temp control valves open, the Freon syst ______.

Answer 17

Will not work !

Question 18

Control of the Cabin Temp. by pax uses ________.

Answer 18

The Cab control panel with the Cab Temp Contol in Cabin

Question 19

All environmental indicators are powered by _______.

Answer 19

28 VDC

Question 20

The conditions for FREON system to are ____________. (5)

Answer 20

on the ground 1 GEN or GPU
in-flight 2 GEN no lights
Cab Temp control at OFF
Stab-wing OFF
No Starter engaged