The most common and most likely answer to this crossword clue is the 9 letter word REPAIRMAN
I've seen this crossword clue in The Guardian
R
E
P
A
I
R
M
A
N
More clues leading to the result REPAIRMAN
- Chap making good agent and pilot
- Salesman, flier and maintenance worker
- Upset a pilot and member of ground crew?
- Mechanic concerned with pilot circling end of airstrip
- Engineers and soldier hold the brace for the mechanic
- Fixer standing on the street with flyer
- Guy who fixes rare map in plastic
- Representative flyboy: Mr. Fixit
- He corrects each misdirected flyer
Buddy explains!

The straight part
We know that "maintenance worker" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case maintenance worker = repairman.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does REPAIRMAN mean?
REPAIRMAN noun- A man whose job is to repair things