◆ SpookStack

AIR COMME Con.merce, according to present ar- Tangements. All stations with vertical antennas, both new and old, are to be provided with simultaneous equipment .and stand-by radio range transmitters for emergency use in case of a break-down, stand-by power, and positive cone of silence markers which give the airman a positive signal, either by turning on a light on his instrument board or by aural signal in his headphones, as he passes over the station. Field and Lighting Changes Field and lighting improvement pro} ects, in some cases, cali for the estab- lishment of entirely new facilities, while others call for improvement, re- location, or discontinuance. These projects will be amended from time to time and others added to the list as the program hrogresses. Specific items now planned are: New intermediate landing fields at East Liverpool, Ghio, and Marshall, Mo.; enlargement of fields at Advance, Mo. Archbold, Ghio, Chesterfield, Tenn., Pittsfeld, Mass, and Saugus, Calif. Enlarge or relocate: Livermore, Cauif., and Wendover, Utah; improve or relocate: Kylertown, Pa.; improve: Oceanside, Calif.: relocate: Columbla- ville, N. ¥.; discontinue: Higginaville, Mo. Beacons between Dana and Laramie, Wro., on the Salt Lake-Omaha airway will be relocated to provide a straight- line course. A new field will be estab- lished near McFadden, Wro., and those at Dana and Medicine Bow will be dis- continued. On the Goffs-Needles, Calif., section of the Los Angales-Amarilo airwar the intermediate landing field now at Goffs will be discontinued and a new one es- ’ BULLETIN 21 tablished at Needles. One beacon on this section will also be relocated. Field and Nghting facilities on the Las Vegas, Nev.-Milford, Utah, section of the Los Angeies-Salt Lake airway will be relocated to a straight-line course, The intermediate landing field at Baker, Calif., on the same airway will be discontinued and replaced by a new field between Baker and Riggs. All facilities between Pasco and Spokane, Wash., will be discontinued ‘vith the exception of intermediate landing fields for day use at Connell and Sprague, Wash. Field and lighting facilities will be relocated to a straight-line course be- tween Pittsburgh and Harrisburg, Pa., and beacons hetween McConnelisburg and Harrisburg, Pa., will be discon- tinued. Field and Hghts between Washington, D. C,, and Pittsburgh, Pa., Will also be relocated to a straight- line course. These two projects, ac- cording to present arrangements, will be performed in conjunction with the State of Pennsvivania 2 Thess rai, Teletypewriter Circuits Besides accomplishing the construc- tion work enumerated above, the Bureau will augment the service to gir- men on the Federal System by arrang- ing for about 7,500 miles of teletrpe- writer clirenits for transmission of weather information. These include the following circuits: Seattle-Vancouver, Fort Worth-Houston. Segttle-Fargo, N, Atlanta-Fort Worth. ak. Detroit-Grand Rap- Fort Worth-Burbank ids. St. Louis-Tulsa, Newark-Buffato, St. Lovis-New Or- Washington. Na s h- leans. ville. Great Falls. Mont.- Washington - Cincin- Bait Lake City- nati. Los Angeles, Attante-Jacksonville, Report of Airship “Hindenburg” Accident Investigation Contents Tart I.—Introduction. Schedule. Ownership and operation. Certificate of airworthiness. Crew, Passengers. Goods carried, Ground crew and facilities, Fiight across the Atiantic. Part I1.—The airship, Desien and construction, 1936 record. Dimension, capacities, other characteris. cs. Controls. Outer cover. Gas cells. Gas valves, Cell fullness or pressure indicator, Part I1~—The sirahip—Continued. Gas shafts. Propulsion, Propellers, Electrical power plant and installations, Ropes and cables, Ballast arrangements. Radio equipment. Lifting gus. Bonding. Part III.—The landing maneuver, Mefenrological conditions. General. Local. Communications, radio, Operation of engines. Release of batlast. Valving of gas. Crew as ballast, Tail heaviness,