Regulatory Framework and Licensing of Aeronautical Stations
This domain tests whether you know who may install and operate an aeronautical station, what the licence actually authorises, and what conduct the regulator expects while you are on watch.
Two instruments, one system
- Station licence. Issued for a specific location, frequency or channel, power and class of emission. Changing frequency, power or site requires an amendment; it is not transferable.
- Operator licence. Issued to the person after knowledge and normally practical assessment, with ratings endorsed. You may only operate the equipment and frequencies covered by your ratings.
- International basis: ITU Radio Regulations allocate the bands and require stations to be licensed by the administration; ICAO Annex 10 Volume II sets operating standards for the aeronautical mobile service; ICAO Annex 1 sets personnel knowledge standards.
Obligations on watch
- Preserve the secrecy of correspondence; do not disclose messages not addressed to your station, except distress, urgency and safety traffic.
- Never transmit false or misleading distress or safety signals, superfluous signals, unidentified transmissions or profanity.
- Produce your licence on demand to an authorised inspector and keep station documents and the log available.
- National regulations sit on top of ICAO standards; where they differ, the stricter national requirement governs.
Worked example. A controller asks you to pass a routine company message to a crew on 121.5 MHz. Refuse: 121.5 is reserved for emergency use, the station licence lists only authorised frequencies, and a company message is not distress, urgency or safety traffic. Log the request and the refusal.
Traps. Confusing the station licence with the personal operator licence; assuming an operator licence permits any frequency; believing a licence may be lent to another operator for a shift.