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Old 18th September 2022 | 09:48
  #15 (permalink)  
Cough
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Joined: Jul 2000
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From: My views - Not my employer!
When I flew 737 Classics, you could display heading in true on the IRS on the overhead panel. Sat on the ground, I'd compare this to the displayed mag heading and charted variation to see where the aircraft was in terms of variation.
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