Jetfire serves as Optimus Prime second in command in the Autobots rank. His cheerful personality helps to bridge the distance between the serious Prime as leader and his troops. He is also brave enough to speak up and tell Prime to his face that he is wrong.
Jet fire can Powerlinx with Optimus Prime to become Jet Prime (Jet Convoy in Japanese)
The package consists of Jetfire, Minicon Comettor, shield/landing gear and 2 missiles
Transformation instruction manual from Takara. It also contains the transformation instruction to powerlinx with Optimus Prime
Jetfire transforms into a space shuttle; some said it is inspired by the X-71 shuttle from the film Armageddon
Comettor transforms to a lunar rover and mount as landing gear for Jetfire in shuttle mode
Both Comettor and shield form the landing gears for Jetfire in shuttle mode
When Comettor been plugged into the Minicon port at the gun/thruster, it triggers two spring loaded tail fins to pop out
In shuttle mode, Jetfire can holds a maximum of 4 Minicons (including the special port for Comettor)
The landing gear becomes a shield for his robot mode while one of the thrusters becomes a large gun.
Lastly, his biodata. I was rather surprised his rank is 10 for a second in command. I would had though his rank should be appropriately 9.