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Bell 525 Relentless vs Cessna 208b Grand Caravan Ex vs Piaggio Avanti Evo vs Robinson R66

The Bell 525 Relentless and Robinson R66 are helicopters, while the Cessna 208B Grand Caravan EX and Piaggio Avanti EVO are fixed‑wing turboprops. In category and mission, the Bell 525 is a modern, medium twin‑engine helicopter aimed at offshore, corporate, and utility roles; the R66 is a lighter single‑engine turbine helicopter typically used for private, training, and light utility work. The Cessna 208B is a rugged single‑engine utility aircraft optimized for short, unimproved strips and cargo/passenger hauling, whereas the Piaggio Avanti EVO is a high‑speed, pressurized executive turboprop geared toward business travel efficiency. For range, the Avanti EVO and Bell 525 generally lead this group for longer point‑to‑point missions, the Grand Caravan EX offers solid regional range depending on payload, and the R66 is usually the shortest‑range option. For passenger capacity, the Grand Caravan EX commonly carries the most in commuter seating (often up to around 9–14 depending on configuration and regulations), the Bell 525 typically seats around the mid‑teens including crew in executive layouts, the Avanti EVO is usually configured for roughly 7–9 passengers, and the R66 is typically up to 5 seats total including the pilot.

SpecBell 525 RelentlessPiaggio Avanti EVO
Summary
Cockpit22
Min Crew21
Total Seats188
Flight RulesIFRIFR
ManufacturerBellPiaggio
Aircraft Name525 RelentlessAvanti EVO
CertificationFAA / EASAFAA / EASA
Max Range (nm)5801530
Max Cabin Seats167
OEM VerificationVERIFIEDUn-Verified
Useful Load (lbs)66753775
Standard Cabin Seats166
Flight Deck (Base Spec)Garmin G5000HRockwell Collins Pro Line 21
Max Cruise Speed (ktas)160400
Base Aircraft Price (USD)$15,000,000$ 7,695,000
Cabin
Cockpit22
Min Crew21
Total Seats188
Max Cabin Seats167
Standard Cabin Seats166
LavatoryNo
Cabin Pressure (psi)9
Galley / RefreshmentNo
SL Cabin Altitude (ft)24000
Max Cabin Altitude (ft)6600
Engine
FADECDual-ChannelYes
ModelCT7-2F1PT6A–66B
Fuel TypeJetFuel
TBO (hrs)40003600
Horsepower1800850
No. of Engines22
Fuel Capacity (gal)641
Flat RatingISA + 28
Fuel Burn (gph)100
Dimensions
Width (ft)25.77
Length (ft)61.5847.3
Cabin Width (ft)7.586.1
Cabin Height (ft)4.55.8
Cabin Length (ft)15.514.9
Overall Height (ft)18.1813.1
Rotor Diameter (ft)54.5
Baggage Volume Ext. (cu. ft)128
Wingspan (ft)47.1
Cabin Width - Floor (ft)3.5
Baggage Volume Int. (cu. ft)35.2