AS-201 (or SA-201), flown February 26, 1966, was the first unmanned test flight of an entire production Block I Apollo Command/Service Module and the Saturn IB launch vehicle. The spacecraft consisted of the second Block I command module and the first Block I service module. The suborbital flight was a partially successful demonstration of the service propulsion system and the reaction control systems of both modules, and successfully demonstrated the capability of the Command Module's heat shield to survive re-entry from low Earth orbit.
The Command and Service Module CSM-009 was a Block I version, designed before the Lunar Orbit Rendezvous method was chosen for the Apollo lunar landing; therefore it lacked capability to dock with the Apollo Lunar Module. Block I also employed preliminary designs of certain subsystems, and was heavier than the Block II version with lunar mission capability. All previous command and service modules flown (with one exception) were boilerplate versions.
Callin' all the stars to fall
And catch the silver sunlight in your hands
Come for me and set me free
Lift me up and take me where I stand
She believes in everything
And everyone, and you and yours and mine
I waited for a thousand years
For you to come and blow me out my mind
Hey Lyla, a star's about to fall
So what d'you say Lyla?
The world around us makes me feel so small Lyla
If you can't hear me call then I can't say Lyla
Heaven help you catch me if I fall
She's the queen of all I've seen
And every song and city far and near
Heaven-hell my mademoiselle
She ring the bell for all the world to hear
Hey Lyla, a star's about to fall
So what d'you say Lyla?
The world around us makes me feel so small Lyla
If you can't hear me call then I can't say Lyla
Heaven'll help you catch me if I fall
Hey Lyla, a star's about to fall
So what d'you say Lyla?
The world around us makes me feel so small Lyla
If you can't hear me call then I can't say Lyla
Heaven'll help you catch me when I fall
Hey Lyla