During annual.

[Multimotor]

Originally Posted by bking

The revised Cessna part number for the vent check valve is S2358-1 purchased through Yingling @ $278.30 each.

$248.48 directly from Cessna, as opposed to cessnadirect dot com, which is Yingling.

https://ww2.txtav.com/Parts/PartSear...Detail/S2358-1

Seeing prices requires an account and a login. Everyone should have an account anyway, so things like the parts manual and service bulletins are accessible.

Free shipping over $250, if the order is placed online.

[YankeeClipper]

My IA damn near stripped it to the steel for the first annual (which is still not finished). He is as risk averse as your local FSDO, but I sincerely appreciate it. Having said this, my plane sat for literally 10 years in the hanger when I bought it, and had very few hours for many years prior to that. If my plane had a full year of flying in 21, and it had an annual back then without any significant caveats in the notes, I don't think my IA would have removed the tips either. There are only so many cycles of tighten and loosen available to all of that hardware.