flag alarm
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flag alarm
[′flag ə‚lärm] (engineering)
A semaphore-type flag in the indicator of an instrument to serve as a signal, usually to warn that the indications are unreliable.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved