FF 19-2-43 R-RH Cv HFIX AAEE 21-2-43 oil cool and rad suit trials. Vc univ wing with mod upper cannon blisters R-RH 24-7-43 M61 install with experimental exhaust manifold. Dev trials. FAAC 24-8-44 AST AAEE 25-1-45 comparison trials with three types prop reduction gear. Tailplane incidence increased by 2 degree standard wing tips. ASTE 33MU 8-7-45 Pershore 5-9-47 S Africa 11-9-47 SAAF 25-9-47