Aero Linx: The Air Transport Association of Canada (ATAC) Objectives: Promote safe, reliable, efficient and affordable air transportation of people and goods to the benefit of Canadian society. Engage with relevant Government and regulatory authorities to advance Canadian commercial aviation and facilitate sustainable air transport. Advocate for government recognition of commercial aviation as a vital Canadian socio-economic enabler. Promote the availability of world class flight training in Canada, domestically and internationally. Promote and support sound environmentally responsible operations and policies. <

Marker Beacon An electronic navigation facility transmitting a 75 MHz vertical fan or boneshaped radiation pattern. Marker beacons are identified by their modulation frequency and keying code, and when received by compatible airborne equipment, indicate to the pilot, both aurally and visually, that he/she is passing over the facility.

"Military Standard 1760 is the technical name. It determines how the wiring will be laid out and what signals will go through them. It's similar to your home's internet connection; you need a specific type of wiring to access the signal and a software agreement as to what those signals will be. Without that correct type of wiring and the software agreement, your computer can't talk to the internet." Source: Alan Williams, B-52 Deputy Program Element Monitor at Air Force Global Strike Command, describing an upgrade that  the B-52 Stratofortress will receive that will significantly increase its weapons payload.