airspeed indicator markings

are the colored arcs required on an a.s.i.? any colored marks at all?

not on an experimental aircraft. but its a good idea.

bob burns
RV-4 N82RB

Markings

Vne should be a red line on the airspeed or a placard on the instrument panel. Maximum flap extended speed white arc or panel placard.

ok thanks.

ASI markings are a good idea. spruce for instance has them...

https://www.aircraftspruce.com/catalog/cspages/rangemarkdecal.php

Hmm. This inspired a web search, and the most concise page I found is this EAA page: https://www.eaa.org/eaa/aircraft-bu...-and-cabin-interior/markings-placards-numbers

I'll let y'all read it for yourselves, but my take is that airspeed markings for experimentals are not explicitly required However, FAR Order 8230.2D says to check markings at condition inspection. But FAR 91.9(b)(2) talks about "approved markings and placards."

My take? They're easy to put on, a real good idea, and will protect you from FAA mischief downstream. And if your flight instruments are electronic, duck soup!

One of the DARs should be able to give a more reliable answer.

those strips look so easy and painless how can i not. thanks.

Most often forgotten is that if you add the range markings to the glass, you must have an anti-rotation mark extending from the glass to the bezel to show if the glass has rotated. I recommend doing this with the radial VNE mark.