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.
