German launch company Isar Aerospace could attempt the third flight of its Spectrum rocket from Andøya Spaceport in Norway as early as 26 November, according to an aviation notice published on 28 October.
The notice, published by Norwegian air navigation services provider Avinor, outlines a launch window for the flight opening on 26 November 2026 and extending through 17 February 2027. Launch attempts during that period will be possible between 20:00 and 21:30 UTC each day.
While the three-month launch window has now been approved, Isar Aerospace has not publicly announced an expected launch date.
Preparations for a third flight follow the successful second launch of Spectrum on 5 September, which marked the vehicle’s first successful mission. An earlier attempt in March 2025 ended less than a minute after liftoff, with the rocket crashing into the Norwegian Sea within sight of the launch pad.
Following the successful September launch, Isar Aerospace confirmed that its third through seventh Spectrum launch vehicles were already in production. Speaking at a post-flight press conference, Isar Aerospace CEO Daniel Metzler said that the third rocket was in final assembly. He added that it would then undergo acceptance testing before being shipped to Norway.
While Isar Aerospace has not yet announced a complete payload manifest for its third flight, Austrian satellite company R-Space confirmed in June that its AT-Astra satellite would be aboard the mission. The spacecraft is expected to carry technology demonstrations for Portugal’s Synopsis Planet and Austrian companies ENPULSION and SunBooster.
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