I give up, after many, many years!
gatt writes:
Once again you're totally clueless. Your Directional Gyro is vacuum
driven. If you only needed electric instruments to fly, your primary
instruments wouldn't be pitot-static. If you have an electrical
problem, bus failure or inflight fire, you might lose all your
electrical instruments.
You think it terms of tiny airplanes. You can drive instruments in other ways
besides with vacuum.
Only if you don't know how to use your radios and know which senses to
trust.
No. Radios or not, if you have no instruments in IMC, you're doomed. Your
radio will not help you, and you cannot trust your senses.
The problem likely happened while he was in flight. In the real world,
you don't get to hit "ALT" and fiddle with your settings until things works.
In the real world, you find the nearest available airport and land. It's very
dangerous to fly IFR without all instruments in good working order.
You ask questions just to contradict
literally everybody who answers them regardless of the experience they
have or the official sources they quote.
At least a few of the people here are going to learn the essential rules of
IFR the hard way. I will be gracious enough, however, to not say "I told you
so" to their surviving family members.
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