| 19862P | U1881 | HAMWORTHY COMPRESSOR SYSTEMS LTD |
| 6D/5424 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| BS1806-018NBRM87 | K0000 | MINISTRY OF DEFENCE UNITED KINGDOM NATIONAL CODIFICATION BUREAU UKNCB RISK MANAGERS |
| BS1806-0 | K7766 | BRITISH STANDARDS INSTITUTION |
| FL1490A35 | U1515 | DGS&E TIG IRC |
| MBEU61518 | U1604 | MARTIN-BAKER AIRCRAFT COMPANY LIMITED |