dragonfrog, calligrafaffer on Nostr: npub1k4qml…73lsq npub19qn6p…46760 Historically, Canadian airports had 2 letter ...
npub1k4qmle0sq0u0fwfz8l7zr85j3ag07z0v3lzj7xrkz5v6sfxdd00ss73lsq (npub1k4q…3lsq) npub19qn6pgk9hs2mg89zg4aujz06meuhmnl9ggapadqkee2vc66dtl2sq46760 (npub19qn…6760)
Historically, Canadian airports had 2 letter call signs, then added a Y prefix if the airport had a weather station, and a W if it didn't, so pilots would know how much weather information they could expect when planning a landing. Basically any major airport had a weather station, the Ws were just lonely little airfields.
When the IATA mandated 3 letter calls signs, that format was already in place.
Historically, Canadian airports had 2 letter call signs, then added a Y prefix if the airport had a weather station, and a W if it didn't, so pilots would know how much weather information they could expect when planning a landing. Basically any major airport had a weather station, the Ws were just lonely little airfields.
When the IATA mandated 3 letter calls signs, that format was already in place.