Welcome Guest. Sign in or Signup

2 Answers

Blue Zipper lines on Charts

Asked by: 4253 views General Aviation

Blue Zipper lines - the floor of Class E airspace increases because since it is a controlled airspace, ATC signal weakens....

 

Am i on the correct path here? Need help!

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.

2 Answers



  1. KDS on Feb 09, 2019

    Could you rephrase your question.

    0 Votes Thumb up 0 Votes Thumb down 0 Votes



  2. Mark Kolber on Feb 09, 2019

    I’m pretty sure he’s asking for the reason behind Class E “zippers” (where Class G ends and Class E begins at a specific altitude above 1200 AGL, but still lower than 14,500 msl – not too many around anymore) and speculating it’s because of weak signals in he area.

    I don’t know the answer but, given where I have seen some in the past, I suspect it’s not signal or comm availability but an effort to “even out” the Class E floor in an area of widely varying terrain.

    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.