In article ,
Mutts wrote:

Any rental pilot/flying club types out there carrying spare postion
light bulbs with them? Do you have to be an A&P to change them? Do
owners frown on replacing bulbs without being informed first?
How hard is it to change them on Archers and 172s?
Its getting old finding the lights burned out during preflight and
everything is closed.

If you do change the wingtip bulbs take care. The glass lens used is
easily dropped as you remove the retainer and is expensive to replace.
Been there, done that. G

--
Dale L. Falk

There is nothing - absolutely nothing - half so much worth doing
as simply messing around with airplanes.

http://home.gci.net/~sncdfalk/flying.html