No. 54 of the year 1933. Amendment List No. 36 of the Airworthiness Handbook for Civil Aircraft (A.P. 1208) has been issued, price 3d. net, or 4d. post free.
(1934), "Air Ministry Official Notices: Instructions to Aeroplane Owners and Ground Engineers on Essential Modifications", Aircraft Engineering and Aerospace Technology, Vol. 6 No. 3, pp. 86-86. https://doi.org/10.1108/eb029787
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