Code

The whole duty of airplanes is now made manifest, in 52 folio pages, compiled, examined and approved by expert engineers, designers and men of the air. Last week H. M. Crane, General Motors technician and chairman of a joint committee of the U. S. Bureau of Standards and the Society of Automotive Engineers, announced completion of the "aircraft safety code." A five-year labor, the code includes regulations for the design, manufacture, testing and operation of all types of craft, qualifications for pilots, traffic rules.

Some of the safety rules were published months ago, rules governing "stunt" flying over public gatherings. Part of the traffic code now published:

Aircraft meeting head on shall pass to the right of one another.

One aircraft overtaking another shall pass to the right.

One aircraft is considered in dangerous proximity to another when approaching in flight within 1,500 feet.

Airplanes shall yield the right of way to dirigibles: dirigibles shall yield to balloons.