| 21460 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 30-295-551-05 | K5294 | GE AVIATION SYSTEMS LIMITED |
| DEFSTAN53-43 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| 7689-3616 | K1488 | BRITISH AEROSPACE PLC NAVAL AND ELECTRONIC SYSTEMS DIVISION |
| BS1981 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981-TABLE 14 | K7766 | BRITISH STANDARDS INSTITUTION |
| L071-305 | K0233 | THALES OPTRONICS LIMITED |
| L071-402 | K0233 | THALES OPTRONICS LIMITED |
| PF47211-308 | K0991 | MARCONI COMMUNICATION SYSTEMS LTD |