Indecently humorous as BA airline flounders (11)

I believe the answer is:

rabelaisian

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'indecently humorous' is the definition.
I can't judge whether this defines the answer.

'as ba airline flounders' is the wordplay.
'flounders' is an anagram indicator (I've seen 'flounder' mean this).
'as'+'ba'+'airline'='asbaairline'
'asbaairline' anagrammed gives 'RABELAISIAN'.

Can you help me to learn more?

(Other definitions for rabelaisian that I've seen before include "Like a French satirist; exuberantly earthy" , "crude" , "given an earthy flavour?" .)

I've seen this clue in The Times.

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