Shared Flashcard Set

Details

CL605 A/C & Press
Revision 23 (updated 7-27-12)
38
Aviation
Professional
07/31/2012

Additional Aviation Flashcards

 


 

Cards

Term
How are the packs powered?
Definition
Left - DC essential
Right - DC bus 2
Term
When do the packs operate in LOW/HIGH mode?
Definition
LOW - engine bleed air, both packs operating
HIGH - single pack ops in flight, APU bleed air on the ground
Term
What is the output pressure of the packs?
Definition
LOW - 24 psi
HIGH - 39.5 psi
Term
After a pack failure, will the remaining pack operate in HIGH mode?
Definition
Yes, AUTO if overpressure or overtemp
Otherwise, the pack must be turned off manually
Term
Where are the fan sensors located?
Definition
right hand side in cockpit and cabin
Term
How is conditioned pack air distributed in the airplane?
Definition
Left - 40% cabin, 60% cockpit
Right - 100% cabin
Term
On the air conditioning panel, which systems have inputs to the different modes - NORM, STBY, and MAN?
Definition
NORM - fan sensor, duct sensor, temp selector
STBY - duct sensor, temp selector
MAN - temp selector
Term
Where are the pack overtemp and overpressure sensors located?
Definition
Overpressure - primary heat exchanger output
Overtemp - air cycle machine input
Term
Explain ram air flow.
Definition
Scoop at base of vertical fin draws air over the heat exchangers and discharges it on both sides of the upper fuselage
Term
How is ram air assisted on the ground/in flight?
Definition
An ejector valve draws air from the aft equipment bay
Term
"L/R PACK HI PRESS" caution
Definition
Pack shuts down
Auto-closes ACU, respective 10th stage and isolation valve
Term
"L/R PACK NOT OFF" caution
Definition
ACU valve remains open
thermostatic switch detects bleed air
Term
"DISPLAY FAN FAIL" status
Definition
avionics cooling fan speed below 60%, extinguishes when speed increases or cooling fan is no longer needed
Term
What is the pressurization computer called?
Definition
CPAM - Cabin Pressure Acquisition Module
Term
How does the CPAM manipulate the cabin signs?
Definition
Auto-illuminates NO SMKG and SEAT BELT signs when cabin altitude exceeds 10,000'
Term
Which static port does the CPC use?
Definition
S3 static port
Term
Describe automatic and manual modes of the outflow valves?
Definition
Auto - electropneumatic, CPC controls vacuum pressure, secondary is slaved
Manual - pneumatic, manually controlled vacuum pressure, primary is slaved
Term
When do the outflow valves automatically open?
Definition

Differential pressure of 9.1 ±.1 psi

or -.5 psi negative pressure

Term
What differential pressure does the cabin normally maintain?
Definition
0 - 8.8 psi
Term
"DIFF PRESS" Warning
Definition
differential pressure > 9.0 psi
Term
When do the outflow valves automatically close?
Definition

Cabin altitude limiter 14,500' ±500'

Masks also drop at 14,500'

Term
What safety feature is built into the aircraft for rapid decompressions?
Definition
Pressure differential diaphragms in the cabin floor prevent buckling
Open at 3 psi differential
Term
What are the 7 modes of cabin pressurization operation?
Definition
Ground, Pre-pressure, Takeoff Abort, Flight, Landing, Touch and Go
Term
Describe CPC schedules when departing and arriving at high altitude airfields (8000').
Definition
Arrive: cabin climbs to 8000', during descent (below 25,000') cabin climbs to field elevation at 700 fpm
Depart: descends at 600 fpm to 8000', then meets auto schedule at normal rate
Term
When does the "FAIL" light illuminate on the pack sw/lt?
Definition
Over-temperature
Over-pressure
SOV failed open
Term
What are the limits of the rate selector? Pip position?
Definition
Selector: 0-2500 fpm up, 0-1500 fpm down
Pip: 500 up, 300 down
Term
"CABIN ALT" warning
Definition
Cabin altitude > 10,000' or 14,500' (high altitude mode)
Term
"CABIN ALT" caution
Definition
Cabin altitude 8500 - 10,000'
Term
"CABIN ALT WARN HIGH"
Definition
High altitude airfield takeoff or landing has been initiated
Term
"AUTO PRESS" caution
Definition
CPC failure
Outflow valves go into isobaric hold mode
Amber fault light on cabin press selector
"FAIL" light on pressure controller sw/lt
Term
How does the cabin transfer switch work?
Definition

COCKPIT: gives cabin ±2°C

CABIN: full range of whatever mode is selected

Term
How does the temperature controller maintain the temperature selected by the control knob?
Definition
Full hot or full cold until the temperature is within 3 deg
Term
At what altitude will the CPAM illuminate the seat belt sign?
Definition
10,000'
Term
What is the function of the PRESS CONT sw/lt?
Definition
Allows manual control of the CPC
Term
Where is flight compartment air exhausted?
Definition
Under the floor through the avionics bay
Term
How are the outflow valves opened? Closed?
Definition
Opened - spring-loaded
Closed - CPC controlled vacuum pressure (jet pump on 10th stage manifold)
Term
Which CPAM does the DCU use if both are powered?
Definition
DCU uses the one with the highest value for it's logic
Term
What are the indications of a CPC failure?
Definition
"AUTO PRESS" caution
amber "FAULT" light on CPC
PRESS CONT "FAIL" sw/lt
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