Short answers, pulled from the story.
King Gustaf VI Adolf presided over the official inauguration ceremony on the 1st of April 1962. The airport had been used for practice flights since 1959 and opened for limited civil traffic in 1960.
The name Arlanda came from a competition held before the airport opened and derives from Arland, an old name for the parish Ärlinghundra now known as Husby-Ärlinghundra in Märsta. The suffix -a was added to match other Swedish place names ending with -landa and plays on the Swedish verb landa which means to land.
Arlanda operates three runways designated as Runway 1 01L/19R Runway 2 08/26 and Runway 3 01R/19L. Runways 1 and 3 are parallel and can be operated independently of one another while both are equipped with CAT III systems for instrument landings.
The first Airbus A380 superjumbo landed at the airport in September 2010. This aircraft type represents the heaviest aircraft currently handled by the facility alongside Boeing 747 jumbojets that began operating one-stop flights to New York during the 1970s.
Most flights were cancelled in spring 2020 due to the COVID-19 pandemic and passenger figures dropped by 97.7% in April 2020 compared to April 2019. Terminals 2 3 and 4 closed while Terminal 5 handled all passengers between March 2020 and October 2021 before figures rose again to near normal levels in spring 2022.
A Linjeflyg Convair 440 crash-landed on the 1st of November 1969 after simulated engine failure caused wing contact with ground. A Spantax Convair 990 crashed while climbing after take-off on the 5th of January 1970 killing five of ten passengers and crew. Scandinavian Airlines Flight 751 crashed shortly after take-off on the 27th of December 1991 when clear ice broke off dual engines killing no one among 129 aboard.