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Diamond Aircraft Da62 vs Piper Seneca

The Diamond Aircraft DA62 and the Piper Seneca are both light twin‑engine airplanes typically used for personal travel, business transport, and flight training, but they sit in slightly different eras and design philosophies. The DA62 is a modern composite twin with advanced avionics and a strong emphasis on efficiency, low noise, and refined cabin comfort. The Seneca, a long‑running conventional aluminum twin, is widely known as a dependable “workhorse” in the piston twin category, common in training and charter-style utility roles. On range, the DA62 generally offers a longer, more efficient cross‑country capability in typical cruise use thanks to its aerodynamics and fuel economy, while many Seneca variants provide solid but often somewhat shorter real‑world legs depending on model, power settings, and payload. For passenger capacity, both commonly seat up to seven including the pilot, though practical seating and baggage with full fuel can favor fewer occupants. The DA62’s cabin is often perceived as roomier and more contemporary, while the Seneca’s layout varies by generation and interior configuration.

SpecDiamond Aircraft DA62Piper Seneca
Summary
Cockpit22
DOC / nm$ 1.18$ 1.69
Total Seats56
Flight RulesIFRIFR
ManufacturerDiamond AircraftPiper
Aircraft NameDA62Seneca
CertificationFAA / EASAFAA / EASA
Max Range (nm)1283828
DOC / nm / Seat$ 0.24$ 0.28
Max Cabin Seats5
OEM VerificationUn-VerifiedUn-Verified
Useful Load (lbs)15651331
Standard Cabin Seats34
Direct Operating Cost$ 225$ 337
Flight Deck (Base Spec)Garmin G1000 NXiGarmin G1000 NXi
Max Cruise Speed (ktas)190200
Base Aircraft Price (USD) $1,290,000 $1,095,000
Cabin
Cockpit22
Total Seats56
Max Cabin Seats5
Standard Cabin Seats34
Engine
FADECYesNo
ModelAE330TSIO-360-RB
Fuel TypeDiesel / Jet FuelAvGas
TBO (hrs)18001800
Horsepower180220
Fuel DeliveryFuel InjectedFuel Injected
No. of Engines22
Usable Fuel (gal)86
Fuel Capacity (gal)89122
Dimensions
Length (ft)30.128.6
Wingspan (ft)47.839
Overall Height (ft)9.310