Air Ambulance Transports Canceled Due to Weather or Other

10.4.8 - Air Ambulance Transports Canceled Due to Weather or Other Circumstances Beyond the Pilot’s Control (Rev. 1, 10-01-03) The chart below shows the Medicare payment determination for various air ambulance scenarios in which the flight is aborted due to bad weather, or other circumstance beyond the pilot’s control. Air Ambulance Scenarios: Aborted Flights Aborted Flight Scenario Medicare Payment Determination Any time before the beneficiary is loaded onboard (i.e., prior to or after take-off to point-of-pickup.) None. Transport after the beneficiary is loaded onboard. Appropriate air base rate, mileage, and rural adjustment.