:(Note: the same helicopter under the same call sign took off from the same location and [https://www.flightaware.com/live/flight/PAT25 executed the same unusual changes in altitude] in a training flight 11 days earlier). | :(Note: the same helicopter under the same call sign took off from the same location and [https://www.flightaware.com/live/flight/PAT25 executed the same unusual changes in altitude] in a training flight 11 days earlier). |