For which one flew to launch chequered Aussie career?

I believe the answer is:

air-sea rescue

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

'for which one flew to launch' is the definition.
The definition suggests a singular noun which matches the answer.

'chequered aussie career?' is the wordplay.
'chequered' indicates anagramming the letters.
'aussie'+'career'='aussiecareer'
'aussiecareer' is an anagram of 'AIR-SEA RESCUE'.

Can you help me to learn more?

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app