I used about 8 inches of clear tubing that is sized to slip over the
pitot/static,
folded in half to go over both. At the fold a nice visible red ribbon held
with a zip tie. Same sort of thing on the fuel vent.
Kevin
On Jun 20, 2012, at 7:44 AM, Frans Veldman <frans@privatepilots.nl> wrote:
>
> Hi,
>
> On our recent trip to Croatia we left the aircraft for two days on a
> very hot airfield. When we came back to depart we discovered that the
> ASI was reading 70 knots... (Luckily our pitot system is air tight
> otherwise we would have discovered it during our take off run or later).
> Investigation (which is no fun on a very hot tarmac without shadow)
> revealed that the pitot tube was internally sealed off by some
> substance. Even poking and moving with a piece of wire inside the pitot
> it was not possible to get air flow through it, despite all the stuff
> that came out. Whatever was in there was even past the 90 degree bend.
> Some insect had made a whole nest or something inside the tube.
> I finally had to take the pitot/static assembly out to get it cleaned
> with compressed air.
>
> To avoid this in the future I would like to use a pitot cover, but in
> the past I could never find a standard cover that fits, so after many
> hours without a cover I thought I could live without one. Clearly not.
> So, has anyone found some suitable standard cover or do I need to make
> something myself?
>
> Frans
>
>
>
>
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