27f58cad___Academy_of_Aerospace_Quality__Section
[Term] Mission Essential Support Equipment [Definition] Equipment used in a closed loop with the system, where failure of this equipment would degrade the mission or imperil personnel. This category includes items of ground support equipment whose functions are necessary to support the count down phase and those items of ground support equipment used in pre-count down phases whose problems can create a safety hazard, cause damage to flight hardware, or inability to detect a problem on the flight hardware. [Section] 
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Glossary | Academy of Aerospace Quality
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