A message concerning an aircraft being threatened by grave and imminent danger requiring immediate assistance is called ?
Session > drone
Source: Codebateau examen 21
A radiotelephony distress message should start with the following signal ?
Distress is defined as ?
A signal sent radiotelephony consisting of spoken word mayday mayday mayday means Imminent danger threatens aircraft immediate assistance required. 
The distress communication and silence conditions shall be terminated transmitting a which words shall this include Distress traffic ended. 
Radio silence can be imposed an aeronautical station in case of Distress traffic ended. 
When an aircraft station receives call 'mayday all stations seelonce feenee' it requested To resume normal communication on frequency. Question 21-8
When an aircraft station receives call 'all stations all stations all stations seelonce mayday' it requested Not to interfere with distress communication. Question 21-9
Which of following messages shall a station in control of distress use to impose silence Not to interfere with distress communication. Question 21-10
The word that should be used at beginning of first urgency communication Not to interfere with distress communication. Question 21-11
When you are not able to transmit an urgency on frequency in use you must use The emergency frequency 2 5 mhz. Question 21-12
An urgency shall be preceded the radiotelephony urgency signal Pan pan spoken three times. Question 21-13
Which of following frequencies an international emergency frequency Pan pan spoken three times. Question 21-14
A signal sent radiotelephony consisting of spoken words pan pan pan pan pan pan means The aircraft has a very urgent to transmit concerning safety of a ship aircraft or other vehicle but immediate assistance not required. Question 21-15
On hearing an urgency a pilot shall Monitor frequency to ensure assistance if required.
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