When must a Mode C transponder be turned on?
Required for all aircraft in Class A, B and C airspace. Required for all aircraft in all airspace within 30 nm of an airport listed in appendix D, section 1 of Part 91 (Class B and military) from the surface upward to 10,000 feet msl.
What does 1200 mean in aviation?
Visual flight rules
Routine codes § 1200: Visual flight rules (VFR) flight, this is the standard squawk code used in Australian and North American airspace when no other has been assigned.
For which speed variation should you notify ATC?
Pilot Practice Page – Database Browser. Showing results 71 – 80 of 981 total. For which speed variation should you notify ATC? A) When the groundspeed changes more than 5 knots.
When do I Change my transponder code to 1200?
If you are flying VFR, you normally use code 1200. You can change to 1200 whenever you want, but if you previously had a clearance, you will immediately lose your clearance when you switch to 1200.
When to squawk 1200 on a transponder?
Transponder Operation Under Visual Flight Rules (VFR): Unless otherwise instructed by an ATC facility, adjust transponder to reply on Mode 3/A Code 1200 regardless of altitude. There may be other examples, but for at least in the U.S., squawk 1200 when VFR.
What is the transponder code for visual flight?
If you are flying in the USA under Visual Flight Rules (VFR), you will be assigned (implicitly) code 1200. Upon entering a SSR area you might get assigned another code, but often you will keep code 1200 if you are not near class C airspace.
When to change transponder code in North Atlantic?
This requirement varies with the oceanic airspace. You should confirm these procedures, through applicable AIP or other regional documents during flight planning. In the North Atlantic, for example, the transponder code should be changed 30 minutes after entering oceanic airspace.