Originally Posted by
N9373M
USMC, I've never heard flash, always ident, and I reply with the code and ident. I like it though and may try it! IFF (Identification, Friend or Foe) is the same as the squawk code.
It probably is military based comm brevity. I've never had a controller question it though. I'm still working on purging a lot of the military jargon out of my vocabulary. I used the word 'duty runway' just a few days ago and was looked at funny by my PIC (former USAF)

Ah......some habits are just hard to break!
To the OP - I wouldn't use the term 'flash' and just take it out all together in that particular scenario personally, but then again I haven't flown across the Atlantic either unless being dragged
USMCFLYR