On May 7, 2007, the composite reflector for the Aquarius spacecraft underwent acoustic testing at the Jet Propulsion Laboratory Environmental Test Chamber. The reflector was damaged by an anomalous test procedure stemming from a deviation from the normal test procedure. Additionally, the test control system software was not up-to-date, and there was no acoustic subject matter expert present during the test. Although Aquarius launched and successfully completed its mission, the test deviation and lack of diligence resulted in a Class A Mishap.
Due diligence is necessary when engineering, operating and maintaining state-of-the-art flight hardware. We test as much as possible in order to assure high rates of success across all of our programs and projects. Testing itself may be viewed as a measure of diligence — perhaps even a luxury during periods of low funding. However, it is necessary that we are thorough and conscientious in our testing procedures as well.