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WARNING: Airworthiness Directive applicability may depend on your specific aircraft configuration,
including installed engines, propellers, and appliances. Results shown here may be incomplete if your full
configuration is not specified. Always consult official FAA sources and your A&P mechanic or IA for
definitive compliance determinations.
Parser coverage is imperfect. "Possible" results require manual verification of the applicability section.
Airworthiness Directives; COLLINS RADIO: Applies to All Model 51R-1 and 51R-2 Receivers Incorporating Allite or Thordarson 90/150 Cycle Filters in Their Tone Localizer Indicator Circuits and to All Model 51R-1 Receivers Which Have Not Been Modified in Accordance With Collins 51R-1 Service Bulletin Number 7a
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