The Turkish government has demanded $183 million worth of penalties from Boeing due to major delays in the delivery of spy planes to the NATO ally, officials said Feb. 18.

A senior procurement official familiar with Turkey’s airborne early warning and control (AEW&C) aircraft program said that Ankara demanded Boeing pay the penalty in services.

Cemal Evci, project coordinator at the Undersecretariat for Defense Industries (SSM), told reporters that the Turkish Defense Ministry demanded an increase in the start-up support period from an initial two years to five years as well as three years of software maintenance service in addition to $32 million worth of spare parts in return for writing off the $183 million penalty and accumulated interest due to delays in the AEW&C program.