Standards: Preliminary standard for aircraft D-C apparatus

In view of the general recognition of the need for preferred voltage ratings for aircraft d-c electric apparatus which will be acceptable to manufacturers and users as a basis for voltage standards for aircraft systems and equipment a “Preliminary Standard for Aircraft D-C Apparatus Voltage Ratings” was recommended for one year´s trial use by the air transportation committee on January 24. J. D. Miner, Jr. (M ´42) of the Westinghouse Electric and Manufacturing Company, Lima, Ohio, was chairman of the subcommittee preparing the Standard.