Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by a report that certain airplanes have navigation units with outdated magnetic variation (MagVar) tables. This proposed AD would require revising the existing airplane flight
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manual (AFM) and applicable corresponding operational procedures to update the flight management system (FMS) limitations. The FAA is proposing this AD to address the unsafe condition on these products.