Welcome Guest. Sign in or Signup

3 Answers

Pitot probe

Asked by: 2062 views Aircraft Systems, Airspace

When the aircraft is descending, if pitot probe is blocked and drain is open, the ASI will a. Over read b. Under read c. Not read

Ace Any FAA Written Test!
Actual FAA Questions / Free Lifetime Updates
The best explanations in the business
Fast, efficient study.
Pass Your Checkride With Confidence!
FAA Practical Test prep that reflects actual checkrides.
Any checkride: Airplane, Helicopter, Glider, etc.
Written and maintained by actual pilot examiners and master CFIs.
The World's Most Trusted eLogbook
Be Organized, Current, Professional, and Safe.
Highly customizable - for student pilots through pros.
Free Transition Service for users of other eLogs.
Our sincere thanks to pilots such as yourself who support AskACFI while helping themselves by using the awesome PC, Mac, iPhone/iPad, and Android aviation apps of our sponsors.

3 Answers

  1. Brian on Nov 14, 2013

    Ask yourself what the pitot tube is giving you for information; ram air, right? Without any ram air what would you expect to have as a reading?

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

  2. Wes Beard on Nov 14, 2013

    The airspeed indicator takes the pitot pressure and subtracts the static pressure. The drain hole effectively makes the pitot pressure zero once the pitot is blocked.

    0-{some value} = Zero airspeed reading.

    Give it a try! http://luizmonteiro.com/Learning_Pitot_Sim.aspx

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

  3. Kris Kortokrax on Nov 17, 2013

    A good reference for your questions is the Pilot’s Handbook of Aeronautical Knowledge.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes

The following terms have been auto-detected the question above and any answers or discussion provided. Click on a term to see its definition from the Dauntless Aviation JargonBuster Glossary.

Answer Question

Our sincere thanks to all who contribute constructively to this forum in answering flight training questions. If you are a flight instructor or represent a flight school / FBO offering flight instruction, you are welcome to include links to your site and related contact information as it pertains to offering local flight instruction in a specific geographic area. Additionally, direct links to FAA and related official government sources of information are welcome. However we thank you for your understanding that links to other sites or text that may be construed as explicit or implicit advertising of other business, sites, or goods/services are not permitted even if such links nominally are relevant to the question asked.