Nigel,
CAA's main concern is quality control. They claim, amongst other things,
that airfield bowser fuel is subject to stringent quality control which
garage fuel is not. It is the Bombardier Rotax Operator's Manual, stating
that unleaded fuel is to be used for the 912 which throws them into
disarray since on the one hand they cannot be seen to be instructing pilots
to disobey the manual, yet (at present) cannot tell them to buy unleaded
---From a airfield bowser 'cos it ain't available yet. Please don't point out
the stupidity of these arguments to me - I'm only the messenger.
Microlights will however be permitted to use forecourt fuel of any
description. (though we're having a running battle with CAA at present
about logging take up).
Use Avgas with great care, and infrequently, on the 912. Nigel Beale
showed me a really badly clogged up head the other day which was caused by
leaded Avgas.
Dave Simpson
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From: nigelcharles <NigelCharles@compuserve.com>
Subject: Re - Petrol not AVGAS
Date: 21 March 1999 22:37
Message text written by "Jerry"
>Has anybody asked the CAA why we can't use unleaded?
Do they have good reasons to want us to use high lead petrol?
<
Unleaded fuel has a lower vapour pressure than 4 star and therefore is more
prone to vapour lock. However with suitable precautions in fuel system
design to prevent vapour lock one would have thought we ought to be able to
justify going 'green'.
See page 21 of the March/April issue of 'Popular Flying ' for the latest
info from PFA Engineering.
Nigel Charles
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