Engine Certification

[aerojones]

Hi,

Could anyone give me a brief overview of the benefits of buying a certified engine over a non-certified engine? Why do manufacturers sell both? Price difference? Does the owner have to get the engine certified after purchasing?

Thank you for your help

[BT]

More information needed.
What country?
Into which airframe is it going?
A certified engine/propeller combination into a kit built aircraft may
shorten the certification process for the aircraft.
An non certified engine/propeller combination into a kit built aircraft
could lengthen the certification process and procedures for the aircraft.
In the US, a non certified engine into a "standard" certified aircraft could
impact (limit) the future use of that aircraft to non commercial
applications.


"aerojones" > wrote in message
...
>
> Hi,
>
> Could anyone give me a brief overview of the benefits of buying a
> certified engine over a non-certified engine? Why do manufacturers sell
> both? Price difference? Does the owner have to get the engine certified
> after purchasing?
>
> Thank you for your help
>
>
>
>
> --
> aerojones

[BT]

"Peter" > wrote in message
...
>
> "BT" > wrote
>
>>In the US, a non certified engine into a "standard" certified aircraft
>>could
>>impact (limit) the future use of that aircraft to non commercial
>>applications.
>
> I think it would be a bit more serious than that ;)

True.. putting in an engine that is outside of the TCDS will require
paperwork, 337 field approval and all of that.
If there is already an STC for that engine in that airframe.. it's a tad
easier..
But in any case.. a non certified engine.. even if approved for
installation.. could remove the aircraft from commercial services.

[Robert M. Gary]

On Feb 16, 8:17*am, "BT" > wrote:

> In the US, a non certified engine into a "standard" certified aircraft could
> impact (limit) the future use of that aircraft to non commercial
> applications.

Huh??? Either the engine is approved (by STC or by the FSDO
(unlikely)) or its not. There is no seperate standard in the US to
allow a certified airplane to run an non-certified engine..

-Robert

[Robert M. Gary]

If the gov't requires you to use a certified engine you must use a
certified engine. If it does not there is no reason to use a certified
engine. The price difference is the cost of getting the gov't
certification (which also usually means the engine is less advanced
since certificating authorities hate dealing with advancements). For
instance an IO-360 vs the same Lycoming engine for experiementals, you
would never buy the certified IO-360 unless you are required to.

-Robert


On Feb 15, 4:36*pm, aerojones >
wrote:
> Hi,
>
> Could anyone give me a brief overview of the benefits of buying a
> certified engine over a non-certified engine? Why do manufacturers sell
> both? Price difference? Does the owner have to get the engine certified
> after purchasing?
>
> Thank you for your help
>
> --
> aerojones