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| BS1806-011 | K7766 | BRITISH STANDARDS INSTITUTION |
| TR6B66 | K0279 | G E C MARCONI AVIONICS LTD |
| Z022E011070A | K0279 | G E C MARCONI AVIONICS LTD |
| R439640 | K4358 | SAFRAN ELECTRICAL & POWER UK LTD |
| BSM48-011 | K7766 | BRITISH STANDARDS INSTITUTION |