The topic of this month's edition of Crosstalk
(http://www.stsc.hill.af.mil/crosstalk/crostalk.asp) is "F-22 Into the
Future". The article on "F-22 Software Risk Reduction" by Beverly Moody, the
Avionics Software Block Lead,   covers a broad range of topics and says this
about Ada:

"Ada 83 will continue to be the primary language used on the F-22 (80-85
percent) for the foreseeable future since much of the code is already
complete. Some teams are looking at migrating their Ada 83 code to Ada 95
since most of the new compilers are based on Ada 95.  To date, needed source
code changes have been trivial and the migrations fairly straightforward.
The promise of the portability of Ada has been validated by several
programs."

That last line is just one of those nice, matter-of-fact Ada-can-do
statements that one likes to see :-)

Marc A. Criley
Software Architect
Lockheed Martin M&DS