Please remember the accident statistics for instrument rated power
pilots who lose their vacuum system--not a pretty picture. In order to
obtain the instrument rating you must demonstrate the ability to fly
without an attitude indicator (read using either turn and bank or turn
coordinator). History has shown that a high percentage of these cases
result in a fatal crash.

Please do not think that a solid state gyro, or any other instrument,
will eliminate the problem. It takes a lot of training and continuing
proficiency to be able to fly an aircraft solely by reference to
instruments. This situation is even more serious when you add
significant turbulence.

Fly Safe--

Skip Guimond