Tech. Order No. 30-100A-1, 30-100B-1 & 30-100F-1. P/b, 21 x 28cm. 140+p, January 1944. Published by the AAF Air Service Command. 'Special Edition for distribution to all pilots. Essentially this is 3 manuals in one - 'Instrument Flying Basic Without Radio Aids (June 1943,55p); Instrument Flying Advanced With Radio AidsCovers (Jan. 1944, 75p) and Instrument Flying - AAF Instrument Approach System (Nov. 1943, 12p). Illustrated in typical cartoon style. The cover is a little soiled and dog-eared otherwise in very good used condition. Stock code P17101.