List of Electron first stages

An Electron first-stage booster is a reusable rocket stage used on the Rocket Lab Electron launch vehicle.^[1] It is made of a carbon composite developed and manufactured by Rocket Lab. In 2019, Rocket Lab announced plans to recover and reuse the first stage of Electron despite previously dismissing the idea. Flight 16 was the first launch to test recovery procedures followed by Flight 20 which, despite a failed primary mission, still achieved a successful Splashdown recovery and Flight 22. On 5 April 2022, Rocket Lab announced that flight 26 would feature the first full recovery attempt with a helicopter catch. The flight launched on 2 May 2022 UTC from launch pad 1A in Mahīa. While the Sikorsky S-92 was able to intersect the booster mid-air, the booster was released at the pilot's discretion after an unexpectedly large increase in mass. The booster parachuted into the ocean where it was recovered by ship.

Rocket Lab has not stated or shown any numbering scheme for these boosters, and so the boosters are named in accordance to their flights, 'F' standing for 'Flight'. This means that there is a possibility Rocket Lab has a different naming scheme, and the boosters could have different serial numbers compared to what launch they flew.