The most common and most likely answer to this crossword clue is the 6 letter word DAKOTA
I've seen this crossword clue in The Guardian
D
A
K
O
T
A
More clues leading to the result DAKOTA
- Native Americans will be fine in a bit
- Sioux pick up good inside information
- A bit upset, OK, about packing an old crate
- Taken aback at fine commercial for aircraft
- Transport aircraft close to Dunkirk, a blighter soaring around it
- Stats about fine retired plane
- Sioux basis for drawing conclusions about end of fight
- Knock out some facts about aircraft
- Information about old king living up in a North American region
- Information includes Oklahoma returning territory in the nineteenth century
Buddy explains!
The straight part
We know that "Transport aircraft" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case transport aircraft = dakota.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.