Vmo
What is vmo?
VMO is the fastest speed, measured in knots, at which an aircraft is approved to fly during normal operations. Exceeding it can stress or damage the airframe.
Studying for an FAA written test?
Terms like vmo show up on the FAA knowledge test. Study them in context with ACS-aligned practice questions, AI explanations, and the cited FAA handbook reference behind every answer — free to start.