Within Schedaero, when we activate an aircraft, we use our default performance which is based off a simplified Boeing model.  If you find the aircraft times to be wrong, you can modify and/or calibrate the performance.
To do this, go to Aircraft, then Performance Profiles, and click the edit button for the profile:

Once on the next screen, you can update any of the open fields, or you can designate to calibrate the performance by clicking the Calibrate tab, and entering the leg information and flight time.

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