AF Form 623 is the On The Job (OJT) training records for personnel in the US Air Force.
The only places I know are the AF 623 Training Records, or Deployment Readiness Folders (DRF)...usually listed on a Form 55.
fulll form of force
6.23 in fraction form = 623/100
623 = (6 x 100) + (2 x 10) + (3 x 1)
Airforce Form 2282
This is an accident report for major vehicle accidents on military (Air Force) installations
Afi 36-2201
8.0623
Indian Air Force if the full form of IAF
Air Resistance: a form of friction.
The RAF started in 1918.
AF Form 979