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.

distress signal

A signal transmitted by an aircraft in distress. It could be transmitted on radio as Mayday or by light indications.
References in periodicals archive ?
NOAA satellites picked up a distress signal from a PLB near Greeley Point, Wyoming, when a hiker experienced an allergic reaction.
The distress signal showed the plane was at 5,000 feet in an abnormal situation," Vidalies said.
Greek vessels rushed to give assistance after picking up its distress signal, the coastguard added.
The track led to a small chemical ship in the bay, and as soon as the lifeboat passed by the ship the signal direction flipped towards the vessel, con-firming it as the source of the distress signal.
In addition to monitoring distress signals, the MOC broadcasts weather reports twice a day at 7am and 7pm which can be accessed by all regional shipping.
The new app is called Distress Signal, and is being marketed as an ideal companion for British people travelling to foreign countries.
Cub, I was taught flying it upside-down distress signal and Does anyone know indeed was, true?
EDS: UPDATING WITH DISTRESS SIGNAL FROM 2ND BRITON)
There is a certain protocol for using this distress signal, which I've illustrated in an example below.
But the Ministry of Defence later said the aircraft had been scrambled when a helicopter transmitted the emergency distress signal.
The ferry was sinking and a distress signal was sent via satellite.
ANKARA, Jan 14, 2011 (TUR) -- A Turkish frigate which received a distress signal from a Danish ship Wednesday night 200 nautical miles offshore Oman, rushed to rescue the ship.