frangible object

frangible object

An object of low mass designed to break, distort, or yield on impact so as to present the minimum hazard to aircraft (ICAO). Objects located in the vicinity of operating surfaces should be frangible so that if an aircraft hits them inadvertently, there is minimal damage.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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ICAO defines a frangible object as one of low mass designed to break, distort or yield on impact so as to present the minimum hazard to aircraft.