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Bell 525 Relentless vs Enstrom 480b vs Piaggio Avanti Evo vs Sikorsky S 92

The Bell 525 Relentless and Enstrom 480B are both helicopters, but they sit in very different capability classes: the 525 is a larger, modern super‑medium aimed at offshore and corporate missions, offering roughly 8–16 passenger seating depending on configuration and a typical range around the 500–600 nautical mile class. The Enstrom 480B is a light single‑engine utility helicopter, usually carrying about 4–5 people with a shorter, regional range commonly in the ~200–300 nautical mile class. The Piaggio Avanti EVO is not a helicopter at all but a pressurized twin‑turboprop airplane focused on fast point‑to‑point travel. It typically carries about 6–8 passengers and generally offers a longer range than light helicopters, often on the order of ~1,000–1,500 nautical miles depending on payload and reserves. The Sikorsky S‑92 is a heavy twin helicopter designed for offshore transport and search and rescue, typically carrying around 19 passengers in airline-style seating and offering range broadly comparable to, or somewhat greater than, the Bell 525 depending on fit and mission.

SpecBell 525 RelentlessPiaggio Avanti EVOSikorsky S-92
Summary
Cockpit222
Min Crew212
Total Seats18821
Flight RulesIFRIFRIFR
ManufacturerBellPiaggioSikorsky
Aircraft Name525 RelentlessAvanti EVOS-92
CertificationFAA / EASAFAA / EASAFAA / EASA
Max Range (nm)5801530439
Max Cabin Seats16719
OEM VerificationVERIFIEDUn-VerifiedUn-Verified
Useful Load (lbs)667537757417
Standard Cabin Seats16619
Flight Deck (Base Spec)Garmin G5000HRockwell Collins Pro Line 21EFIS
Max Cruise Speed (ktas)160400155
Base Aircraft Price (USD)$15,000,000$ 7,695,000 $30,650,000
DOC / nm$ 19.79
DOC / nm / Seat$ 0.94
Direct Operating Cost$ 3,068
Cabin
Cockpit222
Min Crew212
Total Seats18821
Max Cabin Seats16719
Standard Cabin Seats16619
LavatoryNo
Cabin Pressure (psi)9
Galley / RefreshmentNo
SL Cabin Altitude (ft)24000
Max Cabin Altitude (ft)6600
Engine
FADECDual-ChannelYesYes
ModelCT7-2F1PT6A–66BCT7-8A
Fuel TypeJetFuelJetFuel
TBO (hrs)400036004000
Horsepower18008502520
No. of Engines221
Fuel Capacity (gal)641760
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)18.1813.117.8
Rotor Diameter (ft)54.5
Baggage Volume Ext. (cu. ft)128140
Wingspan (ft)47.1
Cabin Width - Floor (ft)3.5
Baggage Volume Int. (cu. ft)35.2
Cabin Volume (cu. ft)775