| 26FX281 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 28D13107 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 3C | K7766 | BRITISH STANDARDS INSTITUTION |
| A30 | K7766 | BRITISH STANDARDS INSTITUTION |
| A30-3C | K7766 | BRITISH STANDARDS INSTITUTION |
| STD1639-3C | U1602 | BRITISH AEROSPACE PLC |
| STD1639-3C | U9143 | BAE SYSTEMS (OPERATIONS) LIMITED |