What has to be done before entering a TMZ?

Question

Question PPL(A) - Private Pilot License - Air Law

QuizVDS · Accepted Answer

Switch on the transponder and activate mode A and C or mode S

QuizVDS · Answer

Request a clearance before entering

QuizVDS · Answer

Switch on the transponder, activate mode A, and squawk IDENT

QuizVDS · Answer

File a flight plan before the flight

PPL(A) EN - Id 21 - What has to be done before entering a TMZ?