Can I re-screen and/or range mark my dial? Yes, a qualified repair shop can do this. The repair department will advise you of the fee for this process. Screening dials is not normally done in house at most repair shops, this function is done
Is the indicator I am buying Tso’d ? If an instrument is certified to a TSO, it must state such on the ID plate. If it does not state the TSO on the name plate then you must assume that it is not approved to the TSO.
Selecting a Replacement Indicator Typically, you can replace any airspeed indicator with another manufacturer’s indicator of the same type and range. However, there are some considerations, which should be taken into account.