Thread: HI/DG - Reg On Precession?
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Old 04-04-2011 | 09:40 PM
  #5  
cheater1239
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From: md-11 c
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Originally Posted by hc0fitted
I hate flying planes without a HSI ...
a HSI is not necessarily a slaved compass card. precession exists is all gyros, a slaved gyro constantly corrects for precession. an unslaved HSI will need regular resetting
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