​Airbus has recorded an order for 12 A330neos from an unidentified customer, all of them the -900 variant, part of an agreement for 25 aircraft which includes 13 A321neos.

Airbus has recorded an order for 12 A330neos from an unidentified customer, all of them the -900 variant, part of an agreement for 25 aircraft which includes 13 A321neos.

The agreement features in the airframer's latest backlog revision.

It marks the only long-haul order for October but Airbus's activity for the month was dominated by Indian budget carrier IndiGo's landmark deal for 300 single-aisle jets.

IndiGo's agreement comprises 213 of the larger A321neo, supplemented by 87 A320neos.

Airbus's formal recording of the deal helps lifts the airframer's net orders for the year so far to 542 – an increase of more than 400 net aircraft from the 127 logged by the end of September.

AirAsia is ordering 30 A321neos – the carrier had disclosed in August that it would take 30 of the long-range A321XLR – while the backlog also includes Wizz Air's order for 20 A321XLRs plus 12 for Jetsmart.

China Airlines disclosed at the Paris air show that it would be ordering 11 A321neos as part of a broader agreement to acquire 25, and these appear to have been included in the backlog.

Seven A320neos for Tigerair Taiwan, three for lessor Aviation Capital Group, and two A321neos for an unidentified customer round off the October agreements for the A320 family.

But Airbus has also revealed that Air Tanzania is ordering another pair of A220-300s. Reunion carrier Air Austral has also signed for three.