Summary: Operational testing found that the B-2A bomber met most operational requirements, but four significant deficiencies were identified that will limit or slow its pace in flight operations. These deficiencies were (1) the incomplete development of the ground mission planning system, (2) the limited situational awareness for the crew because defensive avionics do not provide the planned capability, (3) the insufficient reliability and maintainability of low observable materials and features, and (4) the inability to effectively operate B-2As from operational sites other than the main operating base in Missouri. A March 1999 Air Force assessment found that one deficiency--development of the ground mission planning system--was nearly corrected. Congress has appropriated 98 percent of the funds that the Air Force has estimated it would need to acquire 21 block 30 B-2As and certain future improvements. This program is estimated to cost $44.5 billion. Air Force officials told GAO, however, that funding requirements for future years and the total program cost could increase.
