Question

multiple choice 2.5 points
which of these is not needed to enter class a airspace?
atc (air traffic control) clearance
ifr (instrumental flight rules) certification
altimeter set to 29.92
transponder
all of the answers are correct

Explanation:

To enter Class A airspace, ATC clearance is required as it is highly - controlled airspace. IFR certification is necessary as only IFR flights are allowed in Class A. An altimeter set to 29.92 is a standard requirement for flights at certain altitudes in controlled airspace, and a transponder is also needed for identification and tracking. So all the given items are needed.

Answer:

E. All of the answers are correct