| 023 | K7766 | BRITISH STANDARDS INSTITUTION |
| ASCC17-27C-023 | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| CH101-62-023 | K0377 | GOODRICH ACTUATION SYSTEMS LIMITED |
| OEB4725 | K2103 | OLDBURY ENGINEERING CO LTD |
| BS1806-023 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-023 | K7766 | BRITISH STANDARDS INSTITUTION |