Originally Posted by turbroprop
The established trainer says no and he would call FIRE FIRE FIRE and pass the details
I think your established trainer needs to 'tune in' a bit with CAP413 and study the standard 'attention-getting' pro-words...
A pilot should start an emergency call with the appropriate international RTF prefix (MAYDAY x3 or PAN-PAN x 3). 'FIRE FIRE FIRE' might work in a hangar but an engineer on the flight deck doing an engine run and in communication with ATS would be expected to use standard prefixes. 'FIRE FIRE FIRE'
could be mis-heard as 'FOUR FOUR FOUR'.
MAYDAY if immediate assistance is required, PAN if immediate assistance not required. Simple as that. Chap 8 Page 1 refers.
If ENGINE FIRE it sounds like immediate assistance from RFFS would be required therefore call MAYDAY.
Never be afraid to over-state an emergency. It is easier to downgrade response than upgrade response. Don't pussy-foot about, and avoid using non-standard prefixes.