Airbus Helicopters H135 vs Airbus Helicopters H145 vs Airbus Helicopters H160 vs Airbus Helicopters H175 vs Bell 525 Relentless

The Airbus H135 is the lightest category here, a light twin typically used for EMS, training, and short-haul utility work; it generally carries about 5–7 passengers (plus pilots, depending on layout) and offers the shortest range of the group, roughly in the 300–350 nm class. The Airbus H145 is also a light twin but larger and more capable, commonly seating around 7–9 passengers with a modest range increase, often around 330–380 nm. Stepping up, the Airbus H160 sits in the medium twin segment with a more modern airframe and higher cruise efficiency; it typically accommodates about 10–12 passengers and reaches roughly 450–500 nm. The Airbus H175 is a super-medium twin aimed at offshore and corporate missions, usually configured for about 12–16 passengers and offering around 500–600 nm. The Bell 525 Relentless is likewise a super-medium class helicopter optimized for offshore transport; typical seating is around 16 passengers with a range broadly comparable to the H175, roughly in the 500–600 nm bracket, depending on configuration and reserves.