FIXM: "ActualTakeOffTime" / "ATOT" https://fixm.aero/releases/EURO_Ext-1.0/Europe_A-CDM_FIXM_Extension_v1.0_CM_D.pdf
AIRM: "TakeOffTime" https://airm.aero/developers/advanced-search/1.0.0/TakeOffTime?model=ConceptualModel