Finally Figured out the Master Caution/Warn logic for the Carenado B1900

[RayS]

Turns out it's a Float value, with 1.00 being "All clear" when all this time I thought 1.00 was 'On'. It seems to be tied to the # of secondary Annunciator lights that are 'on' at any given time.

More to come...

[RayS]

Went on my first flight last night with working Master Caution/Warn lights.

Things went swimmingly, and at about 10,000ft the WARN light came on with an ominous red glow.

...turns out there's this thing called cabin pressurization.

I wondered why it got really quiet back there.

[jr2mey]

That is awesome!  Gonna have to come over and see this for myself!