MIL-STD-2039, DEPARTMENT OF DEFENSE STANDARD PRACTICE: FIELD CHANGES AND FIELD CHANGE KITS, PREPARATION OF (07 FEB 1992) [SUPERSEDES MIL-F-17655C] [NO S/S DOCUMENT]., This standard covers the development and preparation of fieldchanges and field change kits (evaluation and production), used to improve equipmentperformance, operational characteristics, maintenance, reliability andsafety.