Property, Plant and Equipment, Net - Summary of Property Plant And Equipment Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 50,769	$ 1,346
Accumulated depreciation	(1,546)	(722)
Property and equipment, net	49,223	624
Aircraft, Equipment and Rotable Spares
Property, Plant and Equipment [Line Items]
Property and equipment, gross	36,637
Equipment Purchase Deposits
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,121
Office, Vehicles and Ground Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,111	256
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,318	656
Internal-Use Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 582	$ 434