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1. zunda (zundan@mastodon.zunda.ninja)'s status on Monday, 29-Nov-2021 08:00:46 JST zunda

   > Typically, the first one or two letters of the ICAO code indicate the country and the remaining letters identify the airport, as indicated by the adjoining figures. ICAO codes provide geographical context.https://en.wikipedia.org/wiki/ICAO_airport_code

   なるほどなあ

   • ぽな@ばぐとら 🛸 (ponapalt@ukadon.shillest.net)'s status on Monday, 29-Nov-2021 08:02:10 JST ぽな@ばぐとら 🛸

     in reply to

     @zundan 日本は基本RJだけど沖縄方面だけROなの歴史的事情が感じられて面白い