"Dr. J Dana Eckart" wrote in
u:

Interesting. My helicopter time is all in R-22s and the controls are
relatively easy to remove and as far as I know, can be done by the
PIC. [I haven't flown in quite some time.]

How common is it for aircraft with removable controls to require an
A&P to do the removal/installation?

The general rule is, if it takes a tool to remove it, an A&P is required.
Especially for flight controls. Improper work on flight controls can kill
you in a heartbeat. Often less.

--
Regards,

Stan