B747-400 PRESSURIZATION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
3 views 0 purchase
Course
B747
Institution
B747
B747-400 PRESSURIZATION EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
How is the pressurization controlled?
Regulating the discharge of air from the two aft mounted outflow valves.
How are the outflow valves controlled?
By the cabin altitude controller A or B, or MANUALLY.
What...
b747 400 pressurization exam questions and answers
Written for
B747
All documents for this subject (17)
Seller
Follow
AcademicSuperScores
Reviews received
Content preview
B747-400 PRESSURIZATION EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
How is the pressurization controlled?
Regulating the discharge of air from the two aft mounted outflow valves.
How are the outflow valves controlled?
By the cabin altitude controller A or B, or MANUALLY.
What happens if one outflow valve fails?
The remaining valve can maintain full cabin altitude & full ventilation rates.
When the two cabin outflow valves cannot maintain pressure, what other devices
are available?
Positive & Negative pressure are provided by mechanical relief valves.
When will the positive pressure relief valve open?
9.4 PSI
While either valve is open, WHICH pack will shut down to assist in relieving
excess cabin pressure?
Pack 2
Where are the negative pressure relief valves located?
Forward & Aft Cargo doors
What other functions to the negative pressure relief valves provide?
Relieve any positive pressure on the ground. Assists in ground crew handling.
Maximum Allowable Cabin Pressure Differential For Takeoff & Landing
, .11 psi
What modes does the pressurization come equipped with?
Automatic & Manual
How are the outflow valves powered?
AC & DC Motors
Which mode utilizes DC power? AC power?
Manual, Automatic
What automatic inputs are provided by the FMS?
Takeoff elevation
Cruise altitude
Landing field elevation
When the Manual Outflow valves in the OFF position, the pressurization operates
in the ________________ mode.
Automatic
No specific flight crew action is required for flights with a landing elevation below
______________.
8,000 feet
How many cabin altitude controllers are there?
2
What if one cabin altitude controller fails?
The remaining takes over
The _______ position on the Cabin Altitude Selector will allow for automatic
switching of the primary controller (A or B)
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller AcademicSuperScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
