MSFS 2024 · General Aviation

Beechcraft Turbine Duke (Black Square) Quick Reference

V-SPEEDS

SpeedValueDescription
Vr102 KIASRotation speed
Vmc96 KIASMin control speed, critical engine inoperative
Vx110 KIASBest angle of climb
Vy120 KIASBest rate of climb
Vxse110 KIASBest single-engine angle of climb
Vyse120 KIASBlue line - best single-engine rate of climb
Vg115 KIASBest glide
Va158 KIASManeuvering speed
Vfa174 KIASMax approach flap extension
Vfe140 KIASMax full flap extension
Vle174 KIASMax landing gear extension
Vs80 KIASClean stalling speed
Vso70 KIASDirty stalling speed
Vne198 KIASDo not exceed speed

POWER SETTINGS

PhaseSetting
Takeoff1,260 ft-lbs torque, 2,190 RPM, 58 GPH per engine at SL
Max Continuous1,260 ft-lbs, 2,190 RPM, oil doors open
Enroute Climb1,200 ft-lbs, 2,190 RPM, oil doors closed
Normal Cruise1,150-1,160 ft-lbs, 2,000 RPM - 45 GPH/eng at FL200 for 264 KTAS
Economy Cruise1,800 RPM - 34 GPH/eng at FL200 for 252 KTAS
Max Range2,050 RPM - 26 GPH/eng at FL200 for 194 KTAS
Landing2,190 RPM, wing pumps on, oil doors open
Single EngineOperating engine 1,260 ft-lbs (takeoff) or 1,200 ft-lbs, maintain 120 kts

FLAP SCHEDULE

SettingMax SpeedUse
UPAnyCruise / climb
APPROACH174 KIAS max (Vfa)Takeoff and approach
FULL140 KIAS max (Vfe)Landing

ENGINE LIMITS

ParameterValue
EnginePratt & Whitney PT6A-35, 525 SHP (390 kW) each
Engine Speed2,190 RPM (2,410 RPM momentary)
Torque (below 17,500 ft)1,260 ft-lbs
Torque (above 17,500 ft)1,200 ft-lbs
ITT - Takeoff805 degC
ITT - Climb / Cruise770 degC (5 min limit above 770)
ITT - Starting1090 degC
Gas Generator101.5% continuous, 102.6% momentary, 101.5% in reverse
Min Ng for Fuel Introduction15%
Starter Cutout52% Ng
Oil Temperature50 degF (10 degC) min, 210 degF (99 degC) max
Oil Pressure40 PSI min, 100 PSI max
Fuel Pressure15-30 PSI normal
Reverse ThrustOne minute maximum duration
Starter Duty Cycle (battery)30s ON / 60s OFF x2, then 30s ON / 30 min OFF

KEY NUMBERS

ParameterValue
Fuel Capacity (usable)265.9 USG - 135.9 left, 130.0 right (270.9 total)
Fuel Burn (takeoff, SL)58 GPH per engine
Fuel Burn (normal cruise)34-45 GPH per engine
Max Cruise Speed320 KTAS
Normal Cruise Speed290 KTAS
Service Ceiling28,000 ft
Max Takeoff Weight7,000 lbs (ramp 7,039, landing 7,000)
Full Fuel Payload852 lbs
Max Cabin Differential4.7 PSI
Takeoff Ground Roll (SL, MTOW)821 ft (1,003 ft over 50 ft)
Landing Ground Roll400 ft (850 ft total)
Accelerate/Stop Distance1,290 ft
Rate of Climb2,650 ft/min (740 ft/min single engine, feathered)
Max Range (30 min reserve)1,170 nm
Max Demonstrated Crosswind25 kts
Fuel Loading Minimum25 gal per tank minimum for takeoff, 25 gal max imbalance