Thnx for being pragmatic The Heff.
In retrospect I did think that by posting a simple observation that a flight due into Heathrow, from LAX, had diverted to Manch. would have been a 'conversation' starter, ie; WHY?
Reminds me of the anecdote:
I keep six honest serving men they taught me all I knew,
Their names are WHAT and WHY and WHEN and HOW
and WHERE and WHO.