Aeronautical Decision-Making Ceiling Visual Flight Rules 
Pilot Institute
MARCH 6, 2025
AGL is important for drone pilots as the regular ceiling for drone flight is defined as 400 feet AGL. If you want to learn more about the finer points of drone flight and technology, these are the most important acronyms to know. This is as opposed to other altitude measurements, such as AMSL or above mean sea level.
Northstar VFR
JULY 21, 2024
The tower informed me that our airport had just gone to IFR due to the low cloud ceilings. Special VFR If the airport you’re landing at is reporting 1000’ ceilings or less, but you determine that you can get there safely without entering the clouds, then you can request what is called special VFR. I didn’t even notice it!
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