Recalled TV drama's launch or first appearance (5)
I believe the answer is:
debut
'first appearance' is the definition.
(synonyms)
'recalled tv drama's launch' is the wordplay.
'recalled' says the letters should be written in reverse (to recall can mean to bring something back).
'tv' becomes 'tube' (I've seen this before).
'launch' suggests taking the first letters (the letter which launches the word).
The initial letter of 'dramas' is 'd'.
'tube'+'d'='tubed'
'tubed' reversed gives 'DEBUT'.
'or' acts as a link.
(Other definitions for debut that I've seen before include "entrance" , "First appearance in society" , "Start -- launch" , "Introduction" , "opening" .)