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| 28E19826 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
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| B.S.SP91 | K3528 | JUBILEE COMPONENTS LTD |
| 2SP91-N | K7766 | BRITISH STANDARDS INSTITUTION |
| 2SP91N | K7766 | BRITISH STANDARDS INSTITUTION |
| B24808 | K0967 | MBDA UK LTD |
| N | K7766 | BRITISH STANDARDS INSTITUTION |
| SP91 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP91-N | K7766 | BRITISH STANDARDS INSTITUTION |
| SP91N | K7766 | BRITISH STANDARDS INSTITUTION |
| SP91N3 1-2 | K7766 | BRITISH STANDARDS INSTITUTION |
| SL476-6 | K8098 | MAN DIESEL & TURBO LTD |
| SL476-6 | U1476 | PAXMAN DIESELS LTD |