Brian Dilse
Pre-Flight
So, the original 172 POH is in MPH. I understand you must then use MPH for the airspeeds in your Aspen (obviously) per the type certificate.
BUT, what I didn't know, is I am told, you cannot discriminate the IAS tape in MPH and choose wind direction/ground speed in KTS.
Either all MPH or all KTS for everything.
Does that sound right? I prefer having MPH on the IAS anyway, as the original analog ASI is MPH…but having ground speed and wind direction displayed in MPH is annoying.
Is my avionics guy right? you would think you could program what you want for units not needed for airworthiness
BUT, what I didn't know, is I am told, you cannot discriminate the IAS tape in MPH and choose wind direction/ground speed in KTS.
Either all MPH or all KTS for everything.
Does that sound right? I prefer having MPH on the IAS anyway, as the original analog ASI is MPH…but having ground speed and wind direction displayed in MPH is annoying.
Is my avionics guy right? you would think you could program what you want for units not needed for airworthiness