The Booz Allen Team explored market size and potential barriers to Urban Air Mobility (UAM) by focusing on three potential markets β Airport Shuttle, Air Taxi, and Air Ambulance. We found that the Airport Shuttle and Air Taxi markets are viable, with a significant total available market value in the U.S. of 500billion,forafullyunconstrainedscenario.Inthisunconstrainedbestβcasescenario,passengerswouldhavetheabilitytoaccessandflyaUAMatanytime,fromanylocationtoanydestination,withoutbeinghinderedbyconstraintssuchasweather,infrastructure,ortrafficvolume.Significantlegalandregulatory,weather,certification,publicperception,andinfrastructureconstraintsexist,whichreducethemarketpotentialfortheseapplicationstoonlyabout0.52.5 billion, in the near term. However, we determined that these constraints can be addressed through ongoing intra-governmental partnerships, government and industry collaboration, strong industry commitment, and existing legal and regulatory enablers. We found that the Air Ambulance market is not a viable market if served by electric vertical takeoff and landing (eVTOL) vehicles due to technology constraints but may potentially be viable if a hybrid VTOL aircraft are utilized