// Returns zero if not found
unsigned short int GetFrequency(const string& ident, const atc_type& tp);
- // Register the fact that the AI system wants to activate an airport
- bool AIRegisterAirport(const string& ident);
-
// Register the fact that the comm radio is tuned to an airport
bool CommRegisterAirport(const string& ident, int chan, const atc_type& tp);