Stratolaunch to add a modified Boeing 777-200ER to its carrier fleet

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Stratolaunch announced in September 2026 that it will acquire a used Boeing 777-200ER to join its carrier fleet, adding to the Boeing 747-400 it bought in 2023 and named Spirit of Mojave.
The 777-200ER, thought to be a former Air New Zealand Trent 800‑powered aircraft, will be modified in‑house with certified pilots already prepared, and Stratolaunch aims to have it flying again in 2027, saying the addition will raise flight capacity by 35% and allow parallel missions worldwide.
Why it matters
The increased capacity and ability to run parallel missions could expand Stratolaunch’s operational capabilities.