Turbojet aircraft used in a commuter service are limited to how many passengers?

In commuter service operations, turbojet aircraft are specifically regulated to ensure safety and operational efficiency. The limit of 19 passengers is established to maintain regulatory compliance under specific parts of aviation regulations that classify commuter operations. This limitation is set based on the size of the aircraft and the typical passenger capacity associated with commuter services, which are intended to connect smaller regional airports to larger hubs.

The rationale behind this restriction relates to factors like the operational capabilities of the aircraft, the need for efficient service to regional routes, and ensuring that safety protocols can be effectively implemented with a smaller group of passengers. Limiting aircraft to 19 passengers allows for easier management of boarding, safety demonstrations, and emergency protocols. Additionally, it aligns with regulations that promote effective use of aircraft designed primarily for shorter regional flights, which typically cater to smaller passenger volumes compared to larger commercial airlines.