<<It is mandatory if using 50-50 to have a water temperature gauge as well
>>
I beg to differ.
The latest SB cross refers to the procedure in the earlier SB that allows
calibration of the CHT against water temp., so that (suitably calibrated and
remarked as necessary) only CHT needs to be monitored.
Duncan McF.
----- Original Message -----
From: "Richard Holder" <rholder@avnet.co.uk>
Sent: Friday, January 12, 2007 3:46 PM
Subject: Europa-List: New AD on Rotax with Evans NPG+
>
>> A mandatory AD for Stemme motorgliders with Rotax
>> engines
>
> effectively banning Evans coolant as it is imflammable !
>
> Simon Smith wrote:
>
>> This is not new. We discussed this back in October when
>> it first came out.
>
> I think we have a case of the right hand and the left hand
> not knowing about each other as Rotax have just issued (Nov) :
>
> SB-912-043 R2
>
> Which allows Evans almost without limit and makes some
> onerous conditions for the use of 50-50 water/antifreeze.
> It is mandatory if using 50-50 to have a water temperature
> gauge as well as a CHT gauge. However it is only mandatory
> to have it done by Dec 2007.
>
> My thinking is that the two authorities will come to some
> conclusion one day and that conclusion could be anywhere
> from one extreme to the other.
>
> Nor am I sure that whether mandatory applies to an
> uncertified engine in a PFA aircraft even though the SB
> does mention the 912ULS engine.
>
> My 50-50 is watched very carefully and I have an
> undercooling problem rather than an overcooling one so I
> plan to wait until the end of the year before I even
> consider doing anything about it !
>
> Richard
> G-OWWW High Cross
>
>
>
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