Pneumatics / Pressurization Flashcards
Learn the Peneumatics of the XLS
23 PSI regulated service air provides?
Throttle Detents
Main Door Seal
Outflow Valve Vacuum Ejectors
Tail Boots
Illumination of the DOOR SEAL annunciator is indicated by
A. Cabin door seal valve
B. <5 psi pressure switch
C. Door licking microswitch
D. Door handle microswitch
B
The purpose of service air through vacuum ejectors is
A. Provide cabin door seal vacuum
B. Provide vacuum for the pressurisation system and the Deice boots
C. Provide vacuum for the door acoustic seal
D. ACM water separator vacuum
B
23PSI service air provides operating pressure for yeah sure for
A. Throttle detents and deicer boots
B. Standby gyro pressure
C. Emergency release of the gear unlocks
D. For the whee brakes accumulator
A
If the DOOR SEAL annunciator illuminates in flight
A. Descend to FL410 or lower
B. Have the co-pilot check the door
C. Begin an emergency Descent and declare the emergency
D. Don oxygen masks
A
When will Emergency Pressurization automatically come on?
14,500’
What altitude will the High Altitude Mode come on automatically?
When takeoff is above 8,100’
At what altitude will the Pax Oxygen Max drop automatically?
14,500’
What has happened when the Yellow LED is illuminated on the Kollsman window?
Pressurization is in Isobaric mode
Above what altitude are crew masks NOT approved for sustained operations?
40,000’
Under what conditions are the crew masks considered quick donning?
Only when properly stowed
What is normal differential pressure?
9.3 psi
At what pressure does the pressure relief valve open?
9.5 psi
What is the pressure differential design limit?
9.7 psi
What has happened when the Red LED is illuminated in the Kollsman window and all other information is blank?
Total failure
