faa regulations - Is a Cessna 172S still airworthy if factory-installed instrumentation not required for day VFR flight is inoperative? - Aviation Stack Exchange
Flight plan equipment methodology | IVAO Documentation Library
Weight & Balance/Equipment List - Cessna 172N Pilot Operating Handbook [Page 47] | ManualsLib
FAA Minimum Equipment Required for VFR Flight - YouTube
Can you fly the airplane if something is not working? – On Course Aviation LLC
Inoperative Equipment
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