[For numbers of the C. A. A. Specifications which have not been listed in Monthly catalogs, consult the Alphabetical index of specifications of the Airways Engineering Division and Signals Division, issued by the Civil Aeronautics Administration, where these publications are listed by title and number.]
Notes:
[For numbers of the C. A. A. Specifications which have not been listed in Monthly catalogs, consult the Alphabetical index of specifications of the Airways Engineering Division and Signals Division, issued by the Civil Aeronautics Administration, where these publications are listed by title and number.]