Page:CAB Aircraft Accident Report, American Airlines Flight 28.pdf/15

 prohibiting the bringing of an aircraft in flight within 500 feet of another. Investigation of the accident has, however, served to bring to light the seemingly quite unjustifiable confusion regarding CAR 60.471; and in addition to its being obviously desirable to clear any misapprehension on that point immediately, it appears that it may be advisable to make certain modifications in this portion of the Regulations, as applied to such areas of traffic concentration as San Gorgonio Pass. Accordingly, the Civil Aeronautics Board has been giving consideration to certain such modifications based upon the sea level altitude rather than height above local terrain.

In addition a recommendation has been made to the Interdepartmental Air-Traffic Control Board by the Civil Aeronautics Board that an immediate study of the traffic situation at San Gorgonio Pass be made with a view to making recommendations for the elimination of the hazard which now exists. It is further recommended that: