History:
FF 13-2-41 8MU 14-2-41 Cv V DGRD RAE 31-3-41 exper. high alt M61 install stab trls 6-41 Mk IX supercharger fitt to M61 pressure cabin FF 25-8-41 exhaustive trls CRD AAEE 17-9-41 Cv VI stab trls. comparison trls with X4942 second proto FVI CRD RAE 10-11-41 CRD HAL 2-9-42 Malcolms White Waltham 31-12-42 'Lobelle' blister sliding hood install for pressure cabin. ETPS Farnborough trls of GGI R/T at high alt (40000ft) with X4942 comparison trls with AB528 with 3 and 4 blade props. to 3566M 11SoTT 7-3-43 CE SOC 20-1-45
* for acronyms please see source:
Spitfire Production