The delivery of two Bombardier CSeries passenger jets to eastern European airline Air Baltic in June has contributed to strong UK aerospace output.
Trade body ADS said seven CSeries jets - the wings of which are made in Belfast - had been delivered in the first half of the year.
And the work of the entirety of the UK's aerospace sector saw 665 aircraft delivered to customers - 10 below 2016's record-setting production pace.
ADS said aircraft and engine order books for the UK industry were also at record highs. The backlog of global orders had risen to a new record of 13,589.
Chief executive Paul Everitt said: "The aerospace industry is experiencing sustained growth, both in the UK and around the world."