The AI now runs off the vacuum pump, though in a relatively simplistic
way.  The instrument keeps track of its spin, and will slowly spin
down when there is no (or insufficient) suction available or quickly
spin up when suction becomes available.  The movement isn't quite
right (especially the spin-up), but it is sufficient for some IFR
practice.  To kill the AI, either disable the gauge itself by setting
/instrumentation/attitude-indicator/serviceable to false, or kill the
vacuum pump by setting /systems/vacuum/serviceable.  When the engine
is running at under 1500RPM, the gauge will also be unreliable.

All the best,


David Megginson, [EMAIL PROTECTED],

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