MIL-R-27521A (NOTICE-2), MILITARY SPECIFICATION: RECEPTACLE, FLYING BOOM, AERIAL REFUELING, GENERAL SPECIFICATION FOR (26-SEP-1997)

MIL-R-27521A (NOTICE-2), MILITARY SPECIFICATION: RECEPTACLE, FLYING BOOM, AERIAL REFUELING, GENERAL SPECIFICATION FOR (26-SEP-1997)., MIL-R-27521A is inactive for new design and is no longer used, except for replacement purposes.