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Thread: In-flight straight & level trim of old aircraft
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Old 2nd Aug 2013, 05:52
  #20 (permalink)  
Tinstaafl
 
Join Date: Dec 1998
Location: Escapee from Ultima Thule
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The balance ball will read an error if the instrument isn't aligned in the panel. That's why there's the ability to rotate the instrument by a few degrees left & right.
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