In March, Falcon had been ordered to manufacture and deliver a new Falcon 9 rocket with an upgraded second stage.
The first stage, which was built to replace the Falcon 9’s older second stage, has yet to be delivered.
The new second stage is capable of lofting satellites to orbit.
It is also capable of returning them to the Earth after a successful re-entry.
It will also be able to launch heavier payloads to lower Earth orbit, though it has not yet been tested in this capacity.
The Falcon 9 first stage engine was designed by a company called Aerojet Rocketdyne and it has undergone a series of tests and certification programs.
The company has now completed its first test flight with a payload of two satellites weighing more than 2,200 kilograms.
The rocket was launched into orbit from Cape Canaveral Air Force Station on April 18.
The rocket is equipped with a Merlin 1D engine, which provides thrust for the rocket’s first stage.
Falcon’s second stage has a higher thrust-to-weight ratio than the first stage and also uses less propellant to power its second stage than its first.
The Merlin 1Ds engine, on the other hand, burns more fuel.
The first stage of the Falcon Heavy rocket, also known as the Falcon XL, is currently being tested at McGregor, Texas, where it will be used to test a new booster designed to lift heavier payload to higher orbits.
The next test flight of the first-stage booster is planned for early May.
It also will be powered by the next-generation Falcon Heavy booster.
The booster will be tested during a flight from Vandenberg Air Force Base, California, on May 28, the company said.