MIL-D-70789A (NOTICE-2), DETAIL SPECIFICATION: DYNAMIC REFERENCE UNIT (DRU) (11-DEC-2013)
MIL-D-70789A (NOTICE-2), DETAIL SPECIFICATION: DYNAMIC REFERENCE UNIT (DRU) (11-DEC-2013)., MIL-D-70789A, dated 18-Aug-1997, remains inactive for new
design; however, the document is valid for use.