CL605 Oral Questions Flashcards
How many PACKS are required to maintain pressurization?
One
Which bleed air manifold supplies air for PACK operation?
10th stage
Shat is the distribution of conditioned air from the PACKs?
Left Pac: 60% cockpit / 40% cabin
Right Pack: 100% Cabin
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?
Ram air intake at bottom of the vertrical tail
Is there any advanantage in using APU bleed air for air comditionioning on the ground?
Yes; the PaCKS operate in HI mode with the APU supplying the bleed air on the ground.
What mode are the PACKS normally in while in flight?
Low
When will the PACKS automatically go to HIGH mode in flight?
Overpressure or Overtemperature.
When would RAM AIR be used?
Smoke clearing; unpressurized flight.
What condition must be present for RAM AIR to work?
Aircraft must be unpressurized (250 KIAS recommended)
What is the difference between NORM, STBY and MAN?
Removes fan sensors in STBY and duct sensor in MAN.
Changes available temperature ranges.
How does the temperature controller operate in normal mode?
Input from fan sensor, temp selector & duct sensor.
What is the function of the switch at the bottom center of the AIR CONDITIONING panel?
604: CKPT HEAT - turn ON/OFF cockpit heat system
605: CABIN TEMP CONT - transfers temp control between CKPT and CES
How is the aircraft cabin pressure normally controlled
The cabin pressue controller (CPC) electrically controls the outflow valves
The source of vacuum for the outflow valves is:
A jet pump using 10th-stage bleed air.
Where does the cabin exhaust air go?
Through the avionics bay under the floor and out the outflow valves.
Where should the MAN RATE knob be set during before flight checks?
All the way counter-clockwise
What is set on the cabin pressure controller with the A-knob?
landing airfield elevation.
Why do we set landing field elevation on the A-knob? of the CPC?
Cabin pressure is based on higher of aut-schedule or landing field elevation
If you have to return to the departure field after takeoff, must you reset the A-knob?
No. The CPC “remebers” the takeoff field elevation.
What does amber FAIL light illuminated on the PRESS CONT switch light mean?
Cabin pressure controller (CPC) has failed.
When the PRESS CONT switch/light is pressed in, it selects:
Manual control of pressurization.
The MAN ALT selector, when selected UP causes the outllow valves to
Open and increase cabin altitude
How does the EMER DEPRESS depressurize the airplane?
Bommands both outflow valves to full open.
What limits the cabin altitude with EMER DEPRESS selected?
Cabin altitude limiters
13,500 +/- 500 ft 604 w/out high altitude SB
14,500 +/- 500 ft 604 with SB and 605.
In Flight, with the Rate knob selected at the PIP, the cabin altitude will climb/descend, at:
Climb 500 fpm / descent 300 fpmDuring takeoff, to what altitude is the cabin pre-pressurized? At approximately what rate?
In Flight, outflow valves automatically open to equalize cabin pressure differential at:
-0.5 psid
During takeoff, to what altitude is the cabin pre-pressurized? At approximately what rate?
Field elevation -150 to -200 ft
How are the EICAS displays altered with PRESS CONT in MAN mode
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
Where is CABIN TEMP displayed in the cockpit?
604: ED 1
605: LMFD or SUMMARY page
What cabin altitude triggers the amber CABIN PRESS EICAS message ?
8500 ft
With the PASS SIGN switches in AUTO; at what cabin altitude are the No Smoking / Fasten Seat Belts signs activated by the CPAM?
Above 10,000 ft cabin
How many CPAMs? Indications for single failure? Dual?
604: One
605: Two
Single failure: 604: Amber CPAM FAIL
605: White CPAM FAULT
Dual failure: 604: NA
605: Amber CPAM FAIL’
“CABIN PRESSURE” aural warning What do you lose when the CPAM FAIL message is displayed?will be heard when:
Cabin altitude is greater than 10,000 ft. (14,500 ft. in high altitude airfield ops.
Does a CPAM FAIL indicate a loss of automatic pressure control?
No - the CPC is independent of the CPAM(s)
What do you lose when the CPAM FAIL message is displayed?
Auto mode for the SEAT BELT and NO SMOKING signs
605: You also lose all indications of cabin altitude, delta P, etc.
Warning and caution messages are normally displayed on:
604 ED 1
605 L MFD
Which messages on the EICAS can be cleared from view? How?
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?
What happens when ED1 (604) / LMFD (605) fails?
604: EICAS automatically moves over to ED2
605: EICAS automatically moves over to RMFD
What are the five items that can cause a T/O CONFIG warning
B-Brakes F-Flaps A-Autopilot S-Spoilers T-Trim
