AviationBanter - View Single Post - Post-Annual Flight

**Peter Clark** · February 22nd 08, 02:10 AM posted to rec.aviation.piloting,rec.aviation.owning

On Thu, 21 Feb 2008 18:03:15 -0800 (PST),
wrote:

On Feb 21, 8:49*pm, Peter Clark
wrote:
On Thu, 21 Feb 2008 17:38:38 -0800 (PST),
wrote:

On Feb 21, 8:29*pm, John Smith wrote:
Was I legal?

Offhand, I don't see why not. FAR 91.205b9 only requires a working
fuel gauge for each tank. It doesn't prohibit an additional, non-
working gauge.

Since the FS-450 isn't TSO'd as a replacement for the facotry
installed and required fuel guage, and carries a "Do not
rely on fuel flow instruments to determine fuel levels in tanks. Refer
to original fuel flow instrumentation for primary information."
warning in the pilot's guide, I do not belive your answer is correct.

Well, my answer was just "Offhand, I don't see why not". Now I do see
why not. Thanks.

(The part about not prohibiting an additional, nonworking gauge is
correct, I believe, provided that a working legal gauge is also
present--which, from what you say, was not the case.)

Not neccessarily. You'd have to check the equipment list - if only 1
were required operational it would say 1, if both were required (I
don't see why in the case of redundant fuel guages in the same tank
but anyway) it would say 2. Example, the KOEL for the Piper Malibu
Mirage which has 2 alternators installed lists 1 as required
operational for IFR and 2 are required if flight into known icing is
anticipated (one will run things fine unless you need the heated
windshield, lift transducer, etc).