What is the vertical area of Class A airspace?
From FL 180 (18,000 feet) up to FL 600 (60,000 feet)
What is the overall coverage of Class A airspace?
Over the 48 contiguous US (including D.C.)
Most of Alaska
Within 12 NM offshore
Does Class A airspace exist above Hawaii?
No Class A above Hawaii
What are the entry requirements for Class A airspace?
IFR clearance from ATC
What are the communications requirements for Class A airspace?
Two-way radio communications
What are the equipment requirements for Class A airspace?
Mode C transponder
All equipment required for IFR flight in a specified aircraft
Distance Measuring Equipment (DME) above FL 240
Distance Measuring Equipment (DME) is required above what altitude inside Class A airspace?
Above FL 240 (24,000 feet)
What is the minimum pilot certificate requirement for Class A airspace?
Private pilot with an instrument rating
Under what circumstances would an aircraft find itself under VFR in Class A airspace?
Emergency due to lost communications
What is the minimum flight visibility or distance from clouds in Class A airspace?
No flight visibility or distance from clouds is specified
What altimeter setting is universally used in Class A airspace?
29.92 (indicated = pressure altitude)
What is the purpose of mandating that a 29.92 altimeter setting be used by all aircraft in Class A airspace?
Allows for all aircraft to be flying on same altimeter setting
No local altimeters needed for terrain or obstacle clearance
Easier and safer when separating air traffic