The Merlin 1A flew only twice: First on March 24, 2006, when it caught fire and failed due to a fuel leak shortly after launch, and the second time on March 21, 2007, when it performed successfully.
默林1A只飞行了两次，第一次在2006年3月24日，发射之后不久因为燃料泄漏而起火，导致发射失败 。