Such configurations may exist where jettison systems are a customer option, and include many twin engine “regional jets” capable of meeting {HEAD ~ FAA Landing Climb} and Approach Climb regulations in {TAIL ~ lower capacity configurations} 
Such configurations may exist where jettison systems are a customer option , and include many twin engine “ regional jets ” capable of meeting { HEAD ~ FAA Landing Climb } and Approach Climb regulations in { TAIL ~ lower capacity configurations }
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