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Page Two 1. The Sporry ADF system has been replaced with a Bendix ADF system consisting of a type MN receiver, MN31A Loop Antenna, BC 434 Remote Control Unit, and a typo 182A Azmuth indicator. To put this system into operation it is necesssary to throw the master radio switch located in the master radio switch box and the function selector switch located on the pedestal ADF control head to the “on” position. With the function switch in the “COMP” position automatic ADF action is obtained. Proper tuning of the equipment is made by adjusting the frequency tuning control to the point of maximum clockwise swing of the tuning indicator needle. In “AHT” position of the function switch the equipment operates as a straight range reciever. In “Loop” position of the function switch the equipment operates as a manual DF system. Bilateral bearings may be obtained in the loop position by rotating the loop antenna electrically by means of the “Loop L-R” switch on the control head. Frequency band selection, dial light brilliancy, and volume control are obtained by manipulating the proper controls which are plainly marked. Operation of all other radio equipment in 21758 is standard with that of the abovementioned aircraft. BERMUDA DIVISION 12-24-48 G.R. Janas Redesignation of Airways Quoted below are recent revisions to civil airways which are presently in effect. The modification to Red 20 will prevent further flight between Washington, D.C. and Bermuda direct. Red Airway #77: (Richmond, Va. to Millville, N.J.) From the intxn of the N course of Richmond. Va. and the SW course of Patuxent River, Md. (Navy) via Patuxent River, Md. (Navy) to Millville, N.J. excluding that portion below 6000' between the eastern coundary of Blue 56 and the SW boundary of Red Airway #20. Blue 56: (Elizabeth City, N.C. to Washington, D.C.) From Weeksville, N.C. via the intxn of the NW course of Weeksville, N.C. and the SW course of Norfolk, Va. VHF to Norfolk, Va. VHF. From the intxn of the NW course of Norfolk, Va. and the S course of Langley Field, Va. (AFB) and the SE course of Brandywine Md. to Brandywine, Md. excluding that portion more than 3 miles E of the S and N courses of Langley Field, Va. (AFB) and the SE course of Brandywine, Md. and a point 18 mi. S of the intxm of the N course of Langley Field, Va. (AFB) and the SE course of Brandywine, Md. radio range. Red 20: (Lansing, Mich. to Washington, D.C.) Washington, D.C. range station to the intxn of the SE course of Washington, D.C. with Red Airway 77 excluding that portion which lies more than 3 miles N of the SE course of Washington, D.C. between the intxn of the SE course of Washington, D.C. and the S course Baltimore, Md. and Red Airway 77. The accompanying map shows the airspace restriction which will prevent flight SE of the intxn of the NE leg of Patuxent and Red 20 (map available in Chief Pilot's office). Flight over Blue 56 as described above has been approved for contact day and night instrument day and night, although it does not yet appear in the manual, for that portion between Washington, D.C. and Norfolk (Navy), Va. 12-27-48 G.R. Janas A floor of 2500' on Blue Airway 56 has been established for that portion of the airway operating adjacent to the Patuxent River Air Station.
