CAP 413 Radiotelephony Manual
Chapter 8 Page 4
1.6 Ejection from Aircraft
The phrase to advise a controller that a pilot is abandoning an aircraft equipped with
an ejection seat:
1.7 Ballistic Recovery Systems
Ballistic recovery systems, which take the form of a parachute, are fitted to some
general aviation aircraft for use in situations where a pilot considers continued safe
flight is no longer possible. Such situations could include engine failure and loss of
control.
The following phrase should be used by pilots, where time permits, as part of
additional information within the emergency message:
1.8 Speechless Code
1.8.1 If an emergency message received by the Military Emergency Controller is weak or
distorted to the point of being unintelligible, the pilot may be asked to adopt the
Speechless Code. A comprehensive description of the speechless procedure appears
in Chapter 10 paragraph 3.16.
1.8.2 An aircraft SSR transponder can also be used, during times of communication
difficulties, by a pilot to acknowledge or respond to messages by the transmission of
SSR Code changes or squawking 'Ident' as requested by the controller.
1.8.3 If neither the state of DISTRESS nor URGENCY applies, a service is available at lower
priority to pilots who find themselves in DIFFICULTY. Such pilots should make their
situation clear and then provide as much information as possible to the emergency
controller from the list at paragraph 1.5 a) to i).
MAYDAY MAYDAY MAYDAY
Milthorpe Tower, G-ABCD, Slingsby
engine fire losing height intend an
immediate forced landing 20 miles
south of Milthorpe. Passing 3000
feet heading 360 degrees PPL no
instrument qualification 1 POB
G-ABCD, Milthorpe Tower, Roger
MAYDAY ..... (any pertinent
information)
MAYDAY MAYDAY MAYDAY
Milthorpe Tower, G-ABCD, C172
engine failed. Will attempt to land
Milthorpe, 10 miles south, 4000
feet heading 360 degrees, Student
pilot
G-ABCD, Milthorpe Tower, Roger
MAYDAY cleared straight-in runway
35 wind 260 10 knots QFE 1008 you
are number one
(Callsign), Ejecting
Ballistic recovery system deployed
17 November 2011
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