Can some one be specific on using the transponder , i get dinged Fail every flight , I’m not doing some thing right on turning it on and off and where .And also -use of lights /TCAS -I also fail that one every flight. My friend also, we both fly for Quebec Air, he has the same problem. Man I’m glad you went to these forums and left Discord , so much better .Thanks Louis
First, what kind of airplane you are using? Some, especially liners, have problems because you cannot specific the type of transponder mode simfly wants. And that is Mode C, or ALT. you need to turn it on while still on Parking. Some liners activate it after take off at a certain altitude .
Also take a look at this previous post
For sure the King air with the GTN 750–Black sq analog
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I think only this has the Mode C available
Collins CTL-92 (Transponder)
This final addition to the CTL radio suite allows for tuning of two transponder codes on one
screen, which can be switched between with the two-position “1/2" toggle switch. Codes are
tuned with the dual concentric rotary knobs. The outer knob controls the two mode significant
digits (both with rollover), and the inner knob controls the two least significant digits. The unit
can be placed in four standard transponder modes: “OFF”; “STBY”, where no transponder
signal is transmitted, but the unit is under power; “ON”, which is standard Mode-A operation;
and “ALT”, which is Mode-C, altitude reporting operation. A “TEST” button may be pressed to
view any diagnostic codes saved in the unit’s memory for debugging, such as low voltage
conditions, or no connection to a transponder control unit, or antenna. Additionally, a
two-position toggle switch on the main panel controls which digital altitude encoder (pilot or
copilot) is used by the CTL-92 when in altitude reporting mode.
