Crossword Genius

Message from Sky when A&E show suffers power cut (10)

Ross

I believe the answer is:

aerogramme

I'm a little stuck... Click here to teach me more about this clue!

'power cut' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'message from sky when ae show suffers' is the wordplay.
I cannot quite understand how this works, but
'message' could be 'am' (AM is an example) and 'am' is present in the answer.
'from' could be 'o' (I've seen this in other clues) and 'o' is found in the answer.
'when' could be 'e' (I've seen this in other clues) and 'e' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Another definition for aerogramme that I've seen is " Air mail letter".)

I've seen this clue in The Telegraph.
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