Airline Nation BlogHistorical investigations, code tracking, and airline corporate lineages.https://www.airlinenation.com/en-usHow Airline Codes Get Recycled After Carriers Diehttps://www.airlinenation.com/blog/code-reuse-in-aviation/https://www.airlinenation.com/blog/code-reuse-in-aviation/With only 676 two-letter combinations, IATA codes face constant turnover. How expired airline identifiers get reassigned.Wed, 07 Oct 2026 00:00:00 GMTHow ETOPS and High-Bypass Turbofans Ended the Four-Engine Passenger Airlinerhttps://www.airlinenation.com/blog/how-etops-ended-the-four-engine-airliner/https://www.airlinenation.com/blog/how-etops-ended-the-four-engine-airliner/From the 60-minute rule of 1953 to ETOPS-370 on the Airbus A350: how twinjet turbine reliability retired the 747 and A340.Fri, 06 Nov 2026 00:00:00 GMTInside Offshore Aircraft Registries: Why Thousands of Airliners Carry Irish and Bermudian Tail Numbershttps://www.airlinenation.com/blog/inside-offshore-aircraft-registries/https://www.airlinenation.com/blog/inside-offshore-aircraft-registries/Why airlines in Asia, Europe, and Latin America fly commercial jets registered in Ireland (EI-), Bermuda (VP-B), and the Cayman Islands (VP-C).Fri, 06 Nov 2026 00:00:00 GMTThe Oldest Airlines Still Flying and What Kept Them Alivehttps://www.airlinenation.com/blog/the-oldest-airlines-still-operating/https://www.airlinenation.com/blog/the-oldest-airlines-still-operating/KLM, Avianca, and Qantas crossed the century mark in aviation. How early state ties and strategic isolation prevented early collapse.Tue, 06 Oct 2026 00:00:00 GMTWhat Defunct Really Means in Airline Historyhttps://www.airlinenation.com/blog/what-defunct-really-means/https://www.airlinenation.com/blog/what-defunct-really-means/Bankruptcy, liquidation, absorption, and regulatory shutdowns. Exploring the distinct fates grouped under defunct status.Mon, 05 Oct 2026 00:00:00 GMTWhy So Many Airlines Start with Aerohttps://www.airlinenation.com/blog/why-so-many-airlines-start-with-aero/https://www.airlinenation.com/blog/why-so-many-airlines-start-with-aero/Over 200 airlines in civil aviation registries share the Aero prefix. The history of classical Greek roots in aviation branding.Thu, 08 Oct 2026 00:00:00 GMTWhy Ten Airlines Fly the Exact Same Corridor: Inside Contested Routes and Fifth-Freedom Battleshttps://www.airlinenation.com/blog/why-ten-airlines-fly-the-same-corridor/https://www.airlinenation.com/blog/why-ten-airlines-fly-the-same-corridor/Why certain global airport pairs attract up to a dozen competing airlines while other major cities have zero non-stop service.Fri, 06 Nov 2026 00:00:00 GMT