CL605 Oral Questions

Question 1

How many PACKS are required to maintain pressurization?

Answer 1

One

Question 2

Which bleed air manifold supplies air for PACK operation?

Answer 2

10th stage

Question 3

Shat is the distribution of conditioned air from the PACKs?

Answer 3

Left Pac: 60% cockpit / 40% cabin

Right Pack: 100% Cabin

Question 4

Where do Is there any advantage in using APU bleed air for air conditioning on the groud?the air conditioning PACKS get their cooling air?

Answer 4

Ram air intake at bottom of the vertrical tail

Question 5

Is there any advanantage in using APU bleed air for air comditionioning on the ground?

Answer 5

Yes; the PaCKS operate in HI mode with the APU supplying the bleed air on the ground.

Question 6

What mode are the PACKS normally in while in flight?

Answer 6

Low

Question 7

When will the PACKS automatically go to HIGH mode in flight?

Answer 7

Overpressure or Overtemperature.

Question 8

When would RAM AIR be used?

Answer 8

Smoke clearing; unpressurized flight.

Question 9

What condition must be present for RAM AIR to work?

Answer 9

Aircraft must be unpressurized (250 KIAS recommended)

Question 10

What is the difference between NORM, STBY and MAN?

Answer 10

Removes fan sensors in STBY and duct sensor in MAN.

Changes available temperature ranges.

Question 11

How does the temperature controller operate in normal mode?

Answer 11

Input from fan sensor, temp selector & duct sensor.

Question 12

What is the function of the switch at the bottom center of the AIR CONDITIONING panel?

Answer 12

604: CKPT HEAT - turn ON/OFF cockpit heat system
605: CABIN TEMP CONT - transfers temp control between CKPT and CES

Question 13

How is the aircraft cabin pressure normally controlled

Answer 13

The cabin pressue controller (CPC) electrically controls the outflow valves

Question 14

The source of vacuum for the outflow valves is:

Answer 14

A jet pump using 10th-stage bleed air.

Question 15

Where does the cabin exhaust air go?

Answer 15

Through the avionics bay under the floor and out the outflow valves.

Question 16

Where should the MAN RATE knob be set during before flight checks?

Answer 16

All the way counter-clockwise

Question 17

What is set on the cabin pressure controller with the A-knob?

Answer 17

landing airfield elevation.

Question 18

Why do we set landing field elevation on the A-knob? of the CPC?

Answer 18

Cabin pressure is based on higher of aut-schedule or landing field elevation

Question 19

If you have to return to the departure field after takeoff, must you reset the A-knob?

Answer 19

No. The CPC “remebers” the takeoff field elevation.

Question 20

What does amber FAIL light illuminated on the PRESS CONT switch light mean?

Answer 20

Cabin pressure controller (CPC) has failed.

Question 21

When the PRESS CONT switch/light is pressed in, it selects:

Answer 21

Manual control of pressurization.

Question 22

The MAN ALT selector, when selected UP causes the outllow valves to

Answer 22

Open and increase cabin altitude

Question 23

How does the EMER DEPRESS depressurize the airplane?

Answer 23

Bommands both outflow valves to full open.

Question 24

What limits the cabin altitude with EMER DEPRESS selected?

Answer 24

Cabin altitude limiters
13,500 +/- 500 ft 604 w/out high altitude SB
14,500 +/- 500 ft 604 with SB and 605.

Question 25

In Flight, with the Rate knob selected at the PIP, the cabin altitude will climb/descend, at:

Answer 25

Climb 500 fpm / descent 300 fpmDuring takeoff, to what altitude is the cabin pre-pressurized? At approximately what rate?

Question 26

In Flight, outflow valves automatically open to equalize cabin pressure differential at:

Answer 26

-0.5 psid

Question 27

During takeoff, to what altitude is the cabin pre-pressurized? At approximately what rate?

Answer 27

Field elevation -150 to -200 ft

Question 28

How are the EICAS displays altered with PRESS CONT in MAN mode

Answer 28

604: Cabin Altitude, Delta P, Cabin Temp & O2 Press displayed on ED 1
605: MAN in cyan next to ALT on the EICAS and SUMMARY page

Question 29

Where is CABIN TEMP displayed in the cockpit?

Answer 29

604: ED 1
605: LMFD or SUMMARY page

Question 30

What cabin altitude triggers the amber CABIN PRESS EICAS message ?

Answer 30

8500 ft

Question 31

With the PASS SIGN switches in AUTO; at what cabin altitude are the No Smoking / Fasten Seat Belts signs activated by the CPAM?

Answer 31

Above 10,000 ft cabin

Question 32

How many CPAMs? Indications for single failure? Dual?

Answer 32

604: One
605: Two
Single failure: 604: Amber CPAM FAIL
605: White CPAM FAULT
Dual failure: 604: NA
605: Amber CPAM FAIL’

Question 33

“CABIN PRESSURE” aural warning What do you lose when the CPAM FAIL message is displayed?will be heard when:

Answer 33

Cabin altitude is greater than 10,000 ft. (14,500 ft. in high altitude airfield ops.

Question 34

Does a CPAM FAIL indicate a loss of automatic pressure control?

Answer 34

No - the CPC is independent of the CPAM(s)

Question 35

What do you lose when the CPAM FAIL message is displayed?

Answer 35

Auto mode for the SEAT BELT and NO SMOKING signs

605: You also lose all indications of cabin altitude, delta P, etc.

Question 36

Warning and caution messages are normally displayed on:

Answer 36

604 ED 1

605 L MFD

Question 37

Which messages on the EICAS can be cleared from view? How?

Answer 37

604 Cautions with CAS key of the ECP; Status messages with STAT key
605 All but Warnings with CAS key of same side CCP as MFD with EICASWhat happens when ED1 (604) / LMFD (605) fails?

Question 38

What happens when ED1 (604) / LMFD (605) fails?

Answer 38

604: EICAS automatically moves over to ED2
605: EICAS automatically moves over to RMFD

Question 39

What are the five items that can cause a T/O CONFIG warning

Answer 39

B-Brakes
F-Flaps
A-Autopilot
S-Spoilers
T-Trim