Welcome Guest. Sign in or Signup

4 Answers

Centrifugal Stop Pin / Anti-Feathering Lock | Picture or Diagram?

Asked by: 4879 views General Aviation

I understand what a centrifugal stop pin / anti-feathering lock in a propeller is, and what is does. However, I cannot find a single picture of it anywhere, like what the actual pin looks like. Does anyone have a picture or diagram that shows what this actually looks like?

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.

4 Answers



  1. KDS on Sep 30, 2020

    Take a look at the AIRPLANE FLYING HANDBOOK (FAA-H-8083-3B), Chapter 12 around Figure 12-3.

    There is also a video here: https://www.youtube.com/watch?v=tIAfmY42siI

    Beyond that, I’ll borrow a phrase from one of the CFI’s at this site; “Google is our friend.”

    -4 Votes Thumb up 0 Votes Thumb down 4 Votes



  2. Complex Goat on Sep 30, 2020

    ＠KDS

    1) I know what a constant speed propeller is.
    2) Those references do not provide a picture or diagram of a centrifugal stop pin.
    3) I’m asking on here because I can’t find anything on google.

    -1 Votes Thumb up 0 Votes Thumb down 1 Votes



  3. KDS on Oct 01, 2020

    Sorry I tried to help you. My apologies.

    +2 Votes Thumb up 2 Votes Thumb down 0 Votes



  4. Jeff Baum on Oct 02, 2020

    Maybe this is more of what you’re looking for…

    http://aircraftspruce.com/catalog/pdf/13-07569.pdf

    Page 2 has a diagram. And starting at the bottom of Page 2 is a short description.

    You can also find Hartzell “Start Locks” (the same thing) on eBay. There are several different styles of centrifugal/Anti-Feather/Start Locks out there.

    +1 Votes Thumb up 1 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.