December 24 1923 | Aviation Week

766

Review of Foreign Engines for Light Planes

Adaptation of Motorcycle Engines Giving Way to Special Horizontal and Vertical Types

774

World’s Largest Airship Nearing Completion

ZR3, Built by the Zeppelin Co. for the U. S. Navy Department To Cross Atlantic Next Spring

780

U. S. ARMY AND NAVY AIR FORCES

U. S. NAVAL AVIATION

The Naval Arctic Air Board, appointed by Secretary Denby, has heen meeting frequently since its formation last week. The Board has called in experts on different phases of arctic exploration, and is. considering the various forms that the expedition might take to best insure its success.

770

Annual Report on the U. S. Air Mail Service

Mail Planes Flew 1,800,000 Mi. with 67,800,000 Letters Making 96.72 Per Cent Performance

776

Book Reviews

Interest in the helicopter has been through a series of cycles. Rising to a high pitch when the future of the airplane still seemed uncertain, it subsided in ratio as the airplane’s performance improved, but subsided only to rise again within the past two years, thanks to the partial success obtained by a number of inventors both here and abroad.

776

L. B. Sperry Lost at Sea

780

U. S. ARMY AND NAVY AIR FORCES

U. S. ARMY AIR SERVICE

Specialized training in the four branches of aviation began at the Air Service Advanced Flying School at Kelly Field, Tex., on Nov. 5. The students now on duty at the Advanced Flying School have been assigned to the four branches of training, as follows:

778

AIRPORTS AND AIRWAYS

Charting the Airways

768

The Heath “Favorite” Plane

772

Skywriting - A Successful Commercial Activity

Planes of Skywriting Corporation of America Extend Operations over Entire Country

December 24, 1923

December 24, 1923

Review of Foreign Engines for Light Planes