Accession Number:

AD0266154

Title:

HIGH ALTITUDE WEATHER HAZARDS TO FLIGHT

Descriptive Note:

Corporate Author:

STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s):

Report Date:

1961-07-01

Pagination or Media Count:

1.0

Abstract:

Radar-met orological analyses were conducted on 14 accidents involving damage or destruc ion of aircraft in severe thunderstorms at altitudes above 25,000 feet. It was found that radar echoes from convective storms in which violent conditions aloft were known to exist have distructive characteristics. Relationships were found between the surface and upper air patternsAND LOCATIONS OF THE ACCIDENTS. A CLOSE CORRESPONDENCE W S FOUND BETWEEN AREAS OF VIOLENT CONVECTION ALOF AND STRONG WIND IN PARTICUL R MULTIPLE- ET-STREAM CONFIGURATIONS AT AND ABOVE THE MILLIBAR PRESSURE LEVEL. Eight accident in which the aircraft was destroyed, but for which radar data were not available, were used to check the findings. In 7 of these cases, agreement was excellent. A method for delineating areas of potentially hazardous flight conditions is suggested An operational program for in-flight avoidance of severe weather is also described. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE