SINGAPORE, Feb 5 (Reuters) - Airbus' main aircraft production target hangs in the balance as the planemaker remains without a supply deal with engine maker Pratt & Whitney, industry sources said.

The companies are bogged down ‌in a dispute over allocations of engines between Airbus production lines and the ​maintenance shops that serve airlines, and have yet to reach ‍a crucial engine supply agreement for both ⁠2026 and 2027.

Airbus ⁠said last month engines were arriving "very, very late" and particularly those from RTX-owned ‌Pratt & Whitney, with which it ​had yet to reach an agreement for this year and next.

On Wednesday, the president of Pratt & Whitney's ⁠commercial engines division, Rick Deurloo, ‍said ​at the Singapore Airshow he was confident an agreement would be reached.

A deal is increasingly vital as the clock ‍ticks towards Airbus earnings on February 19, the sources said on condition of anonymity because the talks are private.

Airbus declined to comment.

A key issue at stake is whether or to what extent the planemaker can stick to a production ​target ‍of 75 narrowbody jets a month in 2027, up from about 60 a month now.

Pratt & Whitney supplies engines ​for about 40% of the benchmark A320neo-family jets being assembled.

Although engines continue to be supplied on a hand-to-mouth basis, uncertainty over the delivery stream makes it challenging to assess the probability needed to underpin any formal target.

The company delivered 19 planes in January, down ​from 25 in the first month last year, industry sources said.

Bloomberg News reported last week that Airbus had yet to settle on a 2026 delivery target ‍due to engine shortages.