Originally Posted by
fitliker
The old Cessna airspeed indicators used to have a yellow arc . Top of the arc if you were heavy , bottom of the arc if you were light made Va simple .
i do not understand why they stopped painting the yellow arc on the airspeed indicators . How expensive is yellow paint ?
Be careful with any conclusions. It might be on purpose. For example there is a difference in the white arc area. For some engines on the Cessna's the white arc goes all the way down to 0. For some it doesn't. This is related to the mandatory or optional use of the carburator heating for lycoming engines. Something similar might apply to the yellow arc (no idea what though).