January 13, 2014
Question: A minimum safe altitude (MSA) is published for emergency use on instrument approach charts. Flying at or above the MSA will guarantee how many feet of obstacle clearance?
Answer: The MSA provides at least 1,000 feet of clearance over all obstructions within the radius published on the chart. The radius is typically 25 nautical miles but may be expanded to 30 nm where appropriate. (Source: Instrument Procedures Handbook Chapter 5, Page 18)
FAA Information and Services,
Safety and Education,
A collision near Frederick Municipal Airport Oct. 23 claimed three lives and left the local aviation community–including AOPA–in mourning.
Aerospace and defense giant Lockheed Martin stirred the pot with an Oct. 15 announcement that compact fusion could power vehicles, even aircraft, within a decade. Skeptics were quick to speak up, while Lockheed filed for patents and hopes to find partners in government, academia, and industry.
Find out how to determine if an alteration you want to make to your aircraft is major or minor and how to build a case for any modification you are considering.
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