Hindustan Aeronautics Limited (HAL) has successfully completed noise measurement flight trials with a Dhruv Advanced Light Helicopter (ALH), as part of the process to certify the helicopter under European Aviation Safety Agency rules. The trials were conducted at Mysore Airport in Karnataka in compliance with International Civil Aviation Authority (ICAO) regulations and comprised 96 noise runs spread over eight flights. HAL Chairman and Managing Director T Suvarna Raju said: "The EASA representatives witnessed the entire flight test and preliminary analysis of the recorded noise data, weather parameters and the aircraft parameters shows that the noise levels are within the acceptable limits specified by ICAO for ALH."
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