AIRCRAFT MAINTENANCE - RADIO CALLS advice please
Accepting that most aircraft engineers that use aircraft radios during maintenance do not hold radio licences they loosely follow correct radio procedures. We had a debate at work on what is the correct call to ATC if an emergency arises during an engine ground run: ENGINE FIRE for example.
CAP 413 states all users of RT in the UK should follow the procedures of the manual.
Therefore I say it should follow the PAN PAN PAN format as this is what ATC would expect as it is an urgency message. The established trainer says no and he would call FIRE FIRE FIRE and pass the details.
Any advice on what is expected or acceptable.