Azul Linhas Aereas Brasileiras is planning its first ATR 72-600 heavy check for October.

Trip Linhas Aereas, which is being merged with Azul, will complete the check at its own maintenance facility, which should take 8-10 days, Reuel Matos, Azul’s maintenance director, tells Aviation Week.

Azul and Trip target Dec. 1 for their merger completion, so this maintenance work is a step toward synergistic operations. The two airlines started the merger process one year ago.

Matos says Trip already has completed a few C checks on its own ATR 72s, which are scheduled every 5,000 flight hours, according to ATR standard inspection intervals.

A checks happen every 500 flight hours while line checks occur every two days, according to ATR.

Azul has received 20 of the 30 ATR 72-600s that it has ordered.