Helicopter • Bell • Standard Transport, VIP Executive, Offshore Utility, Military Troop Transport, Aerial Work
| Manufacturer | Bell |
| Model | 525 Relentless |
| Category | Helicopter |
| Variants | Standard Transport, VIP Executive, Offshore Utility, Military Troop Transport, Aerial Work |
| Production Years | 2015 – 2025 |
| Seating | 16, 19, 25 seats |
| Typical TTAF | 4,200 hours |
| Markets | United States, Canada, United Kingdom, Australia, Norway |
| Price Range | $25.0M – $60.0M |
The Bell 525 Relentless is a heavy-lift, medium-to-heavy transport helicopter designed for civilian and government operations. Introduced in the mid-2010s, it represents Bell's modernization of the proven Super Puma/Cougar platform, featuring advanced avionics, improved power plants, and enhanced payload capacity. The aircraft is particularly valued for offshore oil and gas transport, search and rescue, military logistics, and disaster relief operations. Its spacious cabin accommodates up to 25 passengers or equivalent cargo loads, while advanced fly-by-wire systems and integrated health management reduce pilot workload. The 525 combines proven reliability with contemporary technology, offering operators improved fuel efficiency and lower maintenance costs compared to legacy models. Key features include twin Rolls-Royce engines, glass cockpit avionics, and modular cabin configurations. The helicopter operates globally, with strong market presence in North America, Europe, and the Asia-Pacific region, serving both civilian operators and military forces requiring robust, long-range transport capabilities.
Maximum Speed: 287 km/h (155 knots)
Cruise Speed: 259 km/h (140 knots)
Range: 1,210 km (652 nautical miles)
Service Ceiling: 6,100 meters (20,000 feet)
Maximum Takeoff Weight: 8,618 kg (19,000 lbs)
Engines: 2x Rolls-Royce MTU C30 turboshaft
Power: 2,400 shaft horsepower combined
Internal Cargo: 2,722 kg (6,000 lbs)
Fuselage Length: 18.7 meters
Rotor Diameter: 16.4 meters
Hover Out of Ground Effect: 3,660 meters