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What is transponder standby?
The STANDBY setting is pretty self-explanatory, as the ON setting. There is a special mode which is set by putting the transponder in the ALT setting. This tells the transponder to send not only the four-digit code that the pilot has set, but also information on the altitude of the airplane.
Can you turn a transponder off?
When one transponder is on, the other is normally in standby mode. To turn off a transponder, a pilot turns a knob with multiple positions and selects the “off” setting. The second transponder doesn’t automatically activate if the first one is shut down — a knob would also have to be turned.
Can you turn off ADS-B?
Disable ADS-B transmissions: There is currently no capability in Boeing or Airbus aircraft to disable ADS-B transmissions. Embraer do provide the capability to disable ADS-B transmissions.
When does the transponder switch to STBY mode?
Many transponders have automatic features that switch the transponder to STBY when the avionics are turned on, ALT when you take off and back to STBY after the airplane lands. The setting is generally based on the current speed.
Do you press squawk or ident on transponder?
Select standby (STBY) before changing codes. Otherwise there is the real possibility of transmitting a non-authorised code during the process. Do not press the IDENT feature unless requested by ATS. ‘Squawk’ does not mean press the IDENT. ‘Squawk IDENT’ is the request used for this purpose.
How do you recycle a mode’s Transponder?
On occasions transponders may require ‘recycling’ to restore correct encoding. To recycle, briefly select STBY then return to ALT. A mode S transponder may have a GND selection on the switch.
When do you Turn Your transponder on or off?
The wording in the AIM regarding the use of transponders was modified last year. Regarding ground operations the AIM states: “Civil and military transponders should be turned to the “on” or normal altitude reporting position prior to moving on the airport surface to ensure the aircraft is visible to ATC surveillance systems.”