Transponder #

General #

Canadian airspace transponder requirements #

• Class A, B, C require mode C transponder.
• Class D (Windsor) does not require.. Easy way to remember is A-C = C transponder, D = none.
• D for dont = you dont need one.
• Mode S registered to specific aircraft, ATC can see call sign of plane in their zone. Mode S able to utilize ADS-B technology.