Since my 1956 C-180 is CAR-3 I can replace my sticky oil pressure gauge with an NON - TSO'd pressure gauge

Correct ?

if the consensus is yes it does not need to be TSO'd because of the CAR-3 guidelines... then ......

why can one not replace all engine gauges with a non primary engine monitor....that is not TSO'd ...

I'm I missing some basic level of logic in my thinking.

doc_dyer wrote:Since my 1956 C-180 is CAR-3 I can replace my sticky oil pressure gauge with an NON - TSO'd pressure gauge

Correct ?

if the consensus is yes it does not need to be TSO'd because of the CAR-3 guidelines... then ......

why can one not replace all engine gauges with a non primary engine monitor....that is not TSO'd ...

I'm I missing some basic level of logic in my thinking.

I'm wondering the exact same thing...

For that matter, how about replacing the primary flight instruments with glass?
IMHO that's technically OK per CAR 3, but an FAA inspector might take a different point of view.
Installing a modern glass non-required instrument is one thing, but right or wrong a fuss might be made for primary instruments.
I dunno what non-certified engine monitor you're interested in, but if I was gonna put one in my old 180 I'm partial to EI's CGR-30P and it's STC'd. $4K- a lot of dough but I doubt any of the good ones are cheap.

hotrod180 wrote:For that matter, how about replacing the primary flight instruments with glass?
IMHO that's technically OK per CAR 3, but an FAA inspector might take a different point of view.
Installing a modern glass non-required instrument is one thing, but right or wrong a fuss might be made for primary instruments.
I dunno what non-certified engine monitor you're interested in, but if I was gonna put one in my old 180 I'm partial to EI's CGR-30P and it's STC'd. $4K- a lot of dough but I doubt any of the good ones are cheap.

actually I was thinking the G300 (gx3) for the engine monitor its what was in the Cessna Skycatchers. its also 4.5 K but has a lot of other stuff

keeping steam gauges for primary flight controls, using Gx3 as an engine monitor.
the other functions would be a bonus (backup)

I won't know till i fill out appropriate paperwork and talk to the FAA

hope i don't have to wait for the 23 revision to go through.

Bradley

If the FAA moves it along like they did 3rd class medical reform,
we can expect the part 23 revisions by about 2023.