 The MLAS concept was dropped with the transformation of the Crew Exploration Vehicle into the Orion Multi-Purpose Crew Vehicle, and the switch of the launch vehicle from Ares I (with its perennial underperformance) to Delta IV-Heavy or SLS . July 2009 test launch A  Max Launch Abort System test vehicle was launched July 8, 2009, at 6 :26 a.m. EDT.
<clarity>  The MLAS concept was dropped with the transformation of the Crew Exploration Vehicle into the Orion Multi-Purpose Crew Vehicle, and the switch of the launch vehicle from Ares I (with its perennial underperformance) to Delta IV-Heavy or SLS . July 2009 test launch A  Max Launch Abort System test vehicle was launched July 8, 2009, at 6 :26 a.m. EDT.
 The MLAS concept was dropped with the transformation of the Crew Exploration Vehicle into the Orion Multi-Purpose Crew Vehicle, and the switch of the launch vehicle from Ares I (with its perennial underperformance) to Delta IV-Heavy or SLS . July 2009 test launch A Max Launch Abort System was performed at NASA's Wallops Flight Facility on July 8, 2009, at 6 :26 a.m. EDT.