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… and standards Regulatory change About the regulations Search exemptions Read the regulations and standards Canadian …
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… related to the use of Discreet Emergency Frequency ( DEF ) by aircraft flight crew, and . This Agreement on … control of the airport, it has the need to monitor the DEF in use during an emergency for awareness of the situation … purposes. If an aircraft emergency is in progress, the DEF is designated for communications between the IC and the …
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