A three-dimensional block of airspace in a target area, established by the appropriate ground commander, in which friendly aircraft are reasonably safe from friendly surface fires. The airspace coordination area may be formal or informal. Also called ACA. (JP 3-09.3)
AIRSPACE COORDINATION AREA
Meaning of AIRSPACE COORDINATION AREA in English
DOD English dictionary of military terms. Английский словарь военных терминов DOD. 2012