Aero-Terms are designed to be a daily reminder of the terms,
names, acronyms and explanations of the unique language that
populates the aviation world. Aerospace, sport aviation, fixed
wing, helo, you name it... it's all fair game.
Aero-Terms should serve as a quick but intriguing reminder of
the terms you may use every day, or an introduction to an aspects
of the Aero-World you may not yet be familiar with. ANN also
encourages readers to go beyond the FMI link, and further research
any intriguing terms.
In-flight weather advisories issued only to amend the area
forecast concerning weather phenomena which are of operational
interest to all aircraft and potentially hazardous to aircraft
having limited capability because of lack of equipment,
instrumentation, or pilot qualifications. AIRMETs concern weather
of less severity than that covered by SIGMETs or Convective
SIGMETs. AIRMETs cover moderate icing, moderate turbulence,
sustained winds of 30 knots or more at the surface, widespread
areas of ceilings less than 1,000 feet and/or visibility less than
3 miles, and extensive mountain obscurement.