distress signal

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distress signal

[də′stres ‚sig·nəl]
(communications)
An international signal used when a ship, aircraft, or other vehicle is threatened by grave and imminent danger and requests immediate assistance; examples are special radiotelegraph and radiotelephone signals or special signal flags or flares.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

distress signal

A signal transmitted by an aircraft in distress. It could be transmitted on radio as Mayday or by light indications.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
The ship was drifting toward the municipal waters of Pambujan when the PCG received a distress call from them.
A statement on Redcar RNLI's website said: "The Redcar RNLI Atlantic 85 class lifeboat Leicester Challenge III was launched on Thursday, April 20, after the two-man crew of a fishing boat sent out a distress call when their fishing boat broke down in the Tees bay approximately 1.5 miles north of the lifeboat station.
Airport authorities asked for a verification of the emergency message and the flight crew confirmed the distress call, he said.
The crew of the Saudi plane informed the airport upon landing that the distress call was mistake, according to the airport manager.
There was "conversation several minutes long" between Captain Shoukair and the controllers, which amounted to a distress call, according to the source.
The distress call of young caimans, according the sonographic analysis, consists of short notes with defined harmonic structure (Fig.
As many as 150 asylum seekers are believed to have drowned on the way to Australia after the search for a boat that issued a distress call early on Wednesday was abandoned.
Norwegian car carrier MV Parsifal was the first to respond to a distress call by the 67 asylum seekers near Java, who were heading for the Australian territory of Christmas Island, 250 miles to the south.
The crew made a distress call to the Coast Guard at around 6am, but it was cut off and all radio contact was lost.
"I question the reason behind Al Wefaq sending a distress call to the UN and I need to know from who they want the country to be rescued from," said Ms Salman.
The ship put out a distress call Saturday, which was the first the EU naval force knew it was in the area The ship had not notified the EU naval force of its passage.