| Acronym | Meaning |
| RDD | Requirements Definition Document |
| PBIM | Programmable Buffer Interface Module |
| PROG | Progress |
| SDT | Shuttle Data Tape |
| CIS | Communications Interface System |
| GFS | Government Furnished Software |
| ASE | Airborne Support Equipment |
| IPS | IPSL Interface Problem Status Log |
| PLD | Program Listing Document |
| BAC | Booster Assembly Contractor |