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C
O M M A N D
S
Y S T E M S
D
I V I S I O N
INSTALLATION MANUAL
RDR-1600 WEATHER RADAR SYSTEM
AC
20-68B
DATE
8/8/80
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
Washington, D.C.
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Subject:
RECOMMENDED RADIATION SAFETY PRECAUTIONS FOR GROUND OPERATION OF
AIRBORNE WEATHER RADAR
1. PURPOSE. This circular sets forth recommended radiation safety precautions to be taken by
personnel when operating airborne weather radar on the ground.
2, CANCELLATION. Ac 20-68A, dated April 11, 1975, is canceled.
3. RELATED READING MATERIAL.
a. Barnes and Taylor, Radiation Hazards and Protection (London: George Nevnes Limited, 1963).
P. 211.
b. U.S. Department of Health, Education and Welfare, Public Health Service, Consumer
Protection and Environmental Health Service, “Environmental health microwave, ultraviolet radiation and
radiation from lasers and television receivers – An Annotated Bibliography,” FS 2.300: RH-35,
Washington, U.S. Government Printing Office, pp. 56-57.
c. Mumford, W.W., “Some technical aspects of microwave radiation hazards,” Proceedings of the
IRE, Washington, U.S. Government Printing Office, February 1961, pp. 427-447.
4. BACKGROUND. Dangers from ground operation of airborne weather radar include the possibility
of human body damage and ignition of combustible materials by radiated energy. Low tolerance parts of
the body include the eyes and testes.
5. PRECAUTIONS. Management and supervisory personnel should establish procedures for advising
personnel of dangers from operating airborne weather radars on the ground. Precautionary signs should
be displayed in affected areas to alert personnel of ground testing.
a. GENERAL.
(1) Airborne weather radar should be operated on the ground only by qualified personnel.
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