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Jim Baker
Joined: 30 Mar 2006
Posts: 181
Location: Sayre, PA
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 Posted: Thu Sep 14, 2006 5:48 pm Post subject: CHT question....... |
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FARs......
A CHT is required for acft with cowl flaps.... FAR Part 23, Sec.
23.1305 b(3)i
If the aircraft doesn't have cowl flaps but the CHT was installed
anyway by the factory, could one consider this a mandatory item
to be left in place should a JPI, or like engine monitor, be
installed? That is, what regulation prevents me from replacing
the factory bayonnet with a JPI bayonnet instead of leaving the
factory sensor in place and doing a plug gasket as most have
done?
I already know about the dual bayonnet adaptor...the question
still remains....why not disable the factory installed unit.
Thanks.
Jim Baker
580.788.2779
Elmore City, OK
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mlas(at)cox.net
Guest
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| Posted: Fri Sep 15, 2006 10:39 am Post subject: CHT question....... |
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Jim,
Without getting into the finer points and to keep this a simple as
possible from an A&Ps point of view this is the way I would go about
handling this situation. First, if the unit in question is on the Type
Certificate (TC) o the ai9rcraft in question when manufactured and not
listed as an option then you must have it. That being said, if you find
a unit like a JPI that has an STC for you aircraft then you May be able
to replace the original equipment per the STC. The final alternative is
to do a Form 337 modification / alteration with the local FSDO. My
experience with similar types of changes are easy to do on a 337 with
you local A&P.
To more directly answer you question "what regulation prevents me from
replacing the factory bayonnet with a JPI bayonnet instead of leaving
the factory sensor in place and doing a plug gasket as most have done?
In order to install the JPI you would have to follow the STC that comes
with the unit. If the unit does not have an STC for you application
then you would be forced to do an alteration through Form 337. With the
337 you can do what ever you want as long as you get approval.
Viva La Experimental Airplanes
Mike Larkin
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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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| Posted: Fri Sep 15, 2006 11:56 am Post subject: CHT question....... |
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I believe JPI has a version of the 700 that does replace the factory
unit.
--
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_________________
Gary
AuCountry Aviation
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