Itanagar: An Indian Air Force Mi-17 helicopter on Thursday crash-landed in Arunachal Pradesh with two pilots and three crew members. Preliminary reports suggest that all the crew members are safe.Also Read - Arunachal's Kameng River Turns Mysteriously Black, Thousands of Fish Found Floating Dead. Know Why

The incident happened when the IAF helicopter was carrying out a maintenance sortie in the area and a court of inquiry will be ordered to ascertain the reasons for the incident, reports suggested. Also Read - Sela Tunnel in Arunachal in Final Stage of Completion. Here's How it Will Give Indian Army Advantage Over China

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Prior to this, another incident of this kind happened in September in which two pilots were killed when an Army helicopter crash-landed on a hill in Shiv Garh Dhar area in Udhampur district of Jammu and Kashmir.

Two pilots were killed on August 3 after an Army helicopter crashed into Ranjit Sagar Dam lake near Pathankot.