For promulgation by Air Ministry. Comprise: /1 4148: Merlin aero engine; /2 4159 (sheet 1 of 2): Griffon II, III, IV, VI aero engines, lubrication diagrams; /3 4186: Merlin aero engines, joints and mating faces; /4 4216: Derwent Mark I. See also MSP 120/1-3 for others in this series. Air diagrams
For promulgation by Air Ministry. Comprise /1 3717: Liberator III, V, VI, VII - oil system; /2 4360 (sheet 1 of 6): H2S. Mk. III, height and direction correction; /3 4360 (sheet 6 of 6): H2S. Fishpond. /4 4578: Generator, type UO Air diagrams
