| 137 | K7766 | BRITISH STANDARDS INSTITUTION |
| 750432421 | K0654 | SAFRAN LANDING SYSTEMS UK LTD |
| ASCC 17/27-137 | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-137 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-137 | K7766 | BRITISH STANDARDS INSTITUTION |