Bell 525 Relentless

Bell 525 Relentless
Prototype of the Bell 525 in flight
Role Super-medium-lift utility helicopter
National origin United States
Manufacturer Bell Textron
First flight 1 July 2015
Status Under development
Produced 2015–present

The Bell 525 Relentless is an American super-medium-lift helicopter, under development by Bell Textron. The new model was unveiled at the 2012 Heli-Expo in Dallas, Texas in February 2012. It first flew on 1 July 2015.

The Bell 525 is designed to transport up to 19 passengers. The aircraft is the first fly-by-wire civilian aircraft and suffered a crash of its prototype, and is still slowly working towards certification. As of 2024, Bell is working towards completing flight certification, and it has secured its first order.

It is a twin turbine engine helicopter with a composite and metal airframe that is in the latter stages of its development.