Koninklijke Luchtvaart Maatschappij N.V., usually called Royal Dutch Airlines, commonly known by the acronym KLM (literal translation from Dutch: Royal Aviation Company), is the main flag carrier of the Netherlands. KLM It is headquartered in Amstelveen, with its hub at the nearby Amsterdam-Schiphol airport; It is part of the Air France-KLM group and a member of the SkyTeam airline alliance. Founded in 1919, KLM is the world's oldest operating airline and has 35,488 employees with a fleet of 149 (excluding subsidiaries) as of 2021. KLM operates scheduled passenger and cargo services to 145 destinations.

The Boeing 737 Classic is the name given to the -300/-400/-500 series of the Boeing 737 before the introduction of the 600, 700, 800 and 900 series. They are short to medium range passenger jet aircraft, a single aisle and narrow fuselage. The Classic series were introduced as the 'next generation' of the 737.[2] Produced from 1984 to 2000, 1,988 aircraft were delivered. As of mid-January 2018, 900 units remained in service.