Welcome Guest. Sign in or Signup

3 Answers

91.155 Basic VFR weather minimums

Asked by: 5646 views , ,
FAA Regulations

Please could someone explain FAR 91.155 e). It states "For the purpose of this section, an aircraft operating at the base altitude of a Class E airspace area is considered to be within the airspace directly below that area". I'm not quite sure as to what it means and what minimums to apply.

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. Kris Kortokrax on Sep 12, 2014

    Interesting question. The only place I find a reference to the “base altitude of Class E airspace” is in FAA Order 7400.2J titled “Procedures for Handling Airspace Matters” It speaks about determining airspace to encompass procedure turns.

    When I look at my old 1981 book of regs, it is worded slightly different. It says”

    “For the purpose of this section, an aircraft operating at the base altitude of a transition area or control area is considered to be within the airspace directly below that area”

    This would seem to tie it to an instrument approach somehow. The only airspace underlying Class E in these circumstances would be Class G.

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes



  2. Mark Kolber on Sep 12, 2014

    It’s probably one of those things added to the reg to forestall silly questions like, “what are the VFR minimums if I am exactly at 1200 AGL where Class E starts at that altitude?”

    I think it just means that, if you are in an area where Class E starts at 700 AGL (the base altitude of the Class E airspace) you are considered to still be in Class G until you get at least an inch above 700 AGL.

    +1 Votes Thumb up 1 Votes Thumb down 0 Votes



  3. psequeira on Sep 16, 2014

    Thank you Kris and Mark

    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.