ISS Flight 6A was launched on board the Space Shuttle Endeavour on STS-100.

Launch Date: April 19, 2001

The "6A" designation indicates that this is the sixth American flight in a planned series of flights to construct the International Space Station (ISS). Flight 6A delivered the "Raffaello" Multi-Purpose Logistics Module (MPLM) for lab outfitting, an Untra High Frequency (UHF) antenna and the Canadian Space Station Remote Manipulator System (SSRMS).