Daher TBM 850 (Black Square) Startup Checklist

METAR Decoder TAF Decoder

Fuel Calculator

Weight & Balance

Takeoff Distance Landing Distance

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ZLEA / Wikimedia CommonsCC BY-SA 4.0

General AviationModern

AIRCRAFT BRIEF

The TBM 850 took the TBM 700 airframe and fitted the more powerful PT6A-66D, flat rated to 700 shp for takeoff but able to deliver 850 shp in cruise, which is where the aircraft gets its name and its 320 knot cruise. Built at Tarbes from 2006, it was the fastest single-engine turboprop of its day and the direct ancestor of the TBM 900 series. Black Square's version models the airframe with analog instrumentation and period avionics rather than the glass panel of the later TBMs, with nearly 100 failure modes and a detailed pressurisation simulation.

RANGE VISUALIZER

Startup Walkthrough

SPECIFICATIONS

manufacturer: Daher (formerly SOCATA)
first Flight: 1988 (TBM 700), 2006 (TBM 850)
role: Pressurised single-engine turboprop
crew: 1-2 pilots + up to 5 passengers
engines: 1x Pratt and Whitney Canada PT6A-66D (850 shp, 700 shp for takeoff)
max Speed: 593 km/h (320 kts TAS)
range: 2,935 km (1,585 nmi)
ceiling: 31,000 ft
weight: 3,354 kg (7,394 lbs MTOW)

Sources: SOCATA TBM - Wikipedia, SOCATA TBM-850 - SKYbrary, Black Square - TBM 850 (Just Flight)

FLIGHT2.23.0Checklist

Daher TBM 850 (Black Square)MSFS 2024 · Startup Checklist · 265 steps · 15 phases

DATE PILOT TAIL

PHS 1 - Pre-Flight Planning8 steps

	01	Weather Briefing (METAR / TAF)REVIEWEDNOTE: Service ceiling is 31,000 ft. Check winds aloft, icing levels and destination alternates.
	02	NOTAMsREVIEWED
	03	Fuel RequiredCALCULATEDNOTE: 281.6 US gal usable (290.6 total). Takeoff power burns 82 GPH; max cruise 58-89 GPH; long range cruise 40-42 GPH.
	04	Weight & BalanceWITHIN LIMITSCAUTION: Max ramp 7,430 lbs, max takeoff 7,394 lbs, max landing 7,024 lbs. Full fuel payload is only 898 lbs.
	05	Takeoff & Landing DistanceCALCULATEDNOTE: Sea level MTOW takeoff ground roll 2,035 ft, 2,840 ft over 50 ft. Landing distance 2,430 ft, ground roll 1,840 ft.
	06	OxygenCHECKEDCAUTION: Maximum cabin differential is 6.2 PSI. Backup oxygen is required for a pressurisation failure at cruise altitude.
	07	Operating TemperatureCHECKEDCAUTION: The aircraft shall not be operated when outside takeoff temperature exceeds 100 degF (38 degC).
	08	Radio Stack and Payload ConfigurationSET ON THE TABLETNOTE: Black Square's tablet configures the avionics stack, payload, fuel and failures before flight.

PHS 2 - Preflight (Cockpit)45 steps

	01	Crash LeverUP
	02	Source SelectorOFF
	03	Generator SelectorMAIN
	04	StarterOFF
	05	IgnitionAUTO OR OFF
	06	Exterior LightsALL OFF
	07	Gyro InstrumentsALL OFF
	08	Emergency LightsTEST
	09	Circuit BreakersALL IN
	10	Deicing SwitchesALL OFF
	11	Landing Gear ControlDOWN
	12	AP/Trim MasterOFF
	13	Radio MasterOFF
	14	Bleed AirOFF
	15	Air CondOFF
	16	Dump SwitchGUARDED
	17	Ram Air HandlePUSHED IN
	18	Auto Fuel SelectorMANUAL
	19	Aux Boost PumpOFF
	20	Tank SelectorL OR R
	21	ELTARMED
	22	Parking BrakeSET
	23	Manual Override LeverOFF
	24	Power LeverFLIGHT IDLE
	25	Propeller LeverMAX. RPM
	26	Condition LeverCUTOFF
	27	Flap ControlUP
	28	Battery Bus PowerCHECK SUPPLY
	29	Source SelectorBAT OR GPU
	30	VoltmeterABOVE 25V
	31	Exterior Lights PanelLIGHT TEST
	32	Fuel GaugesCHECK QUANTITY
	33	Advisory PanelCHECK 1 & 2
	34	OXYGEN AnnunciatorEXTINGUISHED
	35	Interior LightsAS REQUIRED
	36	Environmental PanelLIGHT TEST
	37	FlapsDOWN
	38	Landing Gear PanelLIGHT TEST
	39	Pitot Heat 1ON
	40	PITOT 1 AnnunciatorEXTINGUISHED
	41	Pitot & Stall Heat 2ON
	42	PITOT 2 & STALL HTR AnnunciatorsEXTINGUISHED
	43	Pitot HeatOFF
	44	Deicing PanelLIGHT TEST
	45	Source SelectorOFF

PHS 3 - Before Starting Engine27 steps

	01	Preflight InspectionCOMPLETE
	02	Nose Baggage DoorCLOSED
	03	Engine CompartmentCLOSED
	04	Cabin Access DoorLATCHED
	05	Pilot DoorLATCHED
	06	Parking BrakeSET
	07	Seats & SeatbeltsFASTENED
	08	Oxygen PressureCHECK
	09	Oxygen SupplyON
	10	Passenger OxygenOFF
	11	Microphone SelectorNORMAL
	12	StarterOFF
	13	IgnitionAUTO OR OFF
	14	Landing Gear ControlDOWN
	15	Radio MasterON IF CLEARANCE REQUIRED
	16	Source SelectorBAT OR GPU
	17	Horn TestHOLD
	18	DOOR AnnunciatorEXTINGUISHED
	19	Fuel GaugesCHECK QUANTITY
	20	Auto Fuel SelectorAUTO
	21	AUTO SEL AnnunciatorEXTINGUISHED
	22	Auto Fuel SelectorSHIFT
	23	Engine InstrumentsCHECK
	24	ITT TestHOLD
	25	ITT AnnunciatorILLUMINATED
	26	ITT NeedleFUNCTIONING
	27	Exterior LightsAS REQUIRED

PHS 4 - Engine Start (Battery)26 steps

	01	Manual Override LeverOFF
	02	Power LeverFLIGHT IDLE
	03	Propeller LeverMAX. RPM
	04	Condition LeverCUTOFF
	05	Source SelectorBAT
	06	Aux Boost PumpON
	07	AUX BP ON AnnunciatorILLUMINATED
	08	FUEL PRESS AnnunciatorEXTINGUISHED
	09	Fuel PressureGREENNOTE: Normal fuel pressure is 10-50 PSI.
	10	IgnitionAUTO
	11	StarterONCAUTION: Battery starter limits: 30 seconds ON / 60 seconds OFF, 30 seconds ON / 60 seconds OFF, then 30 seconds ON / 30 minutes OFF.
	12	STARTER AnnunciatorFLASHING
	13	IGNITION AnnunciatorILLUMINATED
	14	Gas Generator13% OR MAXIMUM
	15	Condition LeverLOW IDLE
	16	ITTBELOW 870 IN 20s & 1090 MAXWARNING: Starting ITT limit is 1090 degC. ITT should be below 870 degC within 20 seconds of light-off.
	17	StarterOFF AT 50% Ng
	18	OIL PRESS AnnunciatorEXTINGUISHED
	19	Condition LeverHIGH IDLE
	20	Engine InstrumentsCHECK
	21	Aux Boost PumpAUTO
	22	AUX BP ON AnnunciatorEXTINGUISHED
	23	FUEL PRESS AnnunciatorEXTINGUISHED
	24	MAIN GEN AnnunciatorEXTINGUISHED
	25	VoltmeterAPPROX 28V
	26	AmmeterCHARGING (+)

PHS 5 - After Starting Engine35 steps

	01	Gyro InstrumentsALL ON
	02	Gyro SuctionGREENNOTE: Green arc is 4.5-5.2 inHg.
	03	Gyro SlavingSLAVE
	04	Bleed AirAUTO
	05	Fan FlowAS REQUIRED
	06	Air CondON
	07	Cabin TemperatureSET
	08	Air Flow DistributorAS REQUIRED
	09	Cabin AltitudeFIELD ELEVATION -500 FT
	10	Cabin Climb RateARROW UP
	11	Prop DeiceON - CHECK GREEN
	12	Prop DeiceOFF
	13	L Windshield HeatON - CHECK GREEN
	14	R Windshield HeatON - CHECK GREEN
	15	Windshield HeatOFF
	16	Airframe DeiceON - GREEN CYCLES
	17	Airframe DeiceOFF
	18	Inertial SeparatorON
	19	AmmeterBELOW +50A
	20	Generator SelectorSTANDBY
	21	VoltmeterAPPROX 28V
	22	AmmeterZERO OR CHARGING
	23	Generator SelectorMAIN
	24	FlapsUP
	25	Weather RadarOFF/STANDBY
	26	Radio MasterON
	27	EFIS MasterON
	28	AP/Trim MasterON
	29	EFIS AHRS SourceLEFT
	30	Electric TrimTEST & SET
	31	Taxi LightON
	32	INERT SEP AnnunciatorILLUMINATED
	33	Parking BrakeRELEASE
	34	PARK BRAKE AnnunciatorEXTINGUISHED
	35	Toe BrakesCHECK

PHS 6 - Before Takeoff26 steps

	01	Parking BrakeSET
	02	PARK BRAKE AnnunciatorILLUMINATED
	03	Terrain TestPUSH
	04	Terrain Warning LightsTEST
	05	Power Lever1900 RPM
	06	Exercise PropellerTO FEATHER
	07	Prop GovernorHOLD TO TEST
	08	Prop RPMAPPROX 1800 RPM
	09	Prop GovernorRELEASE
	10	Prop RPM1900 RPM
	11	Power LeverFLIGHT IDLE
	12	Fuel ImbalanceLESS THAN 15 GAL
	13	Auto Fuel SelectorAUTO
	14	Aux Boost PumpAUTO
	15	Auto Fuel SelectorSHIFT TO FULLEST
	16	FlapsAS REQUIREDCAUTION: Use of flaps is not authorised above 15,000 ft. Vfa (approach flap) 178 kts, Vfe (full flap) 122 kts.
	17	Pitot HeatON
	18	Deicing SystemsAS REQUIRED
	19	Inertial SeparatorAS REQUIREDNOTE: Vis (max inertial separator operating speed) is 200 kts.
	20	Advisory PanelALL OFF EXCEPT BRAKE & INERT
	21	Engine InstrumentsCHECK
	22	Flight ControlsFREE & CORRECT
	23	AmmeterBELOW +50A
	24	Parking BrakeRELEASE
	25	PARK BRAKE AnnunciatorEXTINGUISHED
	26	Strobe LightsON

PHS 7 - Takeoff22 steps

	01	HSI CompassCHECK
	02	AttitudeCHECK
	03	AltimeterSET
	04	Altitude SelectorSET
	05	Weather RadarON
	06	Landing LightsON
	07	IgnitionON IF HEAVY PRECIPITATION
	08	Interior LightsDIM FOR TAKEOFF
	09	Cabin LightsOFF
	10	Parking BrakeRELEASE
	11	PARK BRAKE AnnunciatorEXTINGUISHED
	12	TaxiONTO RUNWAY
	13	Advisory PanelALL OFF EXCEPT IGNITION & INERT
	14	Power Lever100% TORQUEWARNING: Use of 850 Mode is prohibited for takeoff and landing. Takeoff torque is 100.0%; ITT limit 850 degC for takeoff.
	15	Rotate85 KTS (Vr)
	16	Landing Gear UpPOSITIVE RATECAUTION: Vle (gear extension) 178 kts, gear retraction 128 kts.
	17	FlapsRETRACT
	18	Flaps Confirmed Up850 MODE
	19	Power Lever121.4% TORQUENOTE: 121.4% torque is only available with 850 Mode engaged, after flaps are confirmed up.
	20	AutopilotENGAGE
	21	Taxi LightsOFF
	22	Landing LightsAS REQUIRED

PHS 8 - Climb8 steps

	01	Power LeverOBSERVE LIMITSCAUTION: Climb/cruise ITT limit is 840 degC. Time above 840 degC should be limited to 5 minutes.
	02	Cabin AltitudeCRUISE ALT. + 1000 FT
	03	Cabin Climb Rate500-700 FPM
	04	Cabin DifferentialMONITORNOTE: Maximum pressure differential is 6.2 PSI.
	05	Cabin TemperatureAS DESIRED
	06	Fuel Qty. & BalanceCHECK
	07	Deicing SystemsAS REQUIRED
	08	Inertial SeparatorAS REQUIRED

PHS 9 - Transition Altitude5 steps

	01	AltimetersSTANDARD
	02	Cabin PressurizationMONITOR
	03	Pulse LightsOFF
	04	Deicing SystemsAS REQUIRED
	05	Inertial SeparatorAS REQUIRED

PHS 10 - Cruise6 steps

	01	Power LeverADJUST FOR PERFORMANCENOTE: Max cruise at 30,000 ft is 105% torque / 2,000 RPM / 58 GPH for 311 KTAS. Long range cruise at 31,000 ft is 67% torque / 41 GPH for 252 KTAS.
	02	Fuel Qty. & BalanceCHECK
	03	Cabin PressurizationMONITOR
	04	Deicing SystemsAS REQUIRED
	05	Inertial SeparatorAS REQUIRED
	06	IgnitionON IF HEAVY PRECIPITATION

PHS 11 - Descent9 steps

	01	AltimetersLOCAL
	02	Cabin AltitudeFIELD ELEV. +500 FT
	03	Pulse LightsON
	04	Deicing SystemsAS REQUIRED
	05	Inertial SeparatorAS REQUIRED
	06	Air Flow DistributorAS REQUIRED
	07	IgnitionON IF HEAVY PRECIPITATION
	08	Fuel Qty. & BalanceCHECK
	09	Auto Fuel SelectorSHIFT TO FULLEST

PHS 12 - Before Landing11 steps

	01	Cabin LightsOFF
	02	AltimetersCHECK
	03	Decision HeightSET
	04	Fuel Qty. & BalanceCHECK
	05	Inertial SeparatorON UNDER 200 KTS
	06	Propeller LeverMAX. RPM
	07	Landing GearDOWN UNDER 178 KTS
	08	FlapsAPPROACH UNDER 178 KTS
	09	Landing LightsAS REQUIRED
	10	Autopilot DisconnectPRESS ONCE
	11	FlapsFULL UNDER 122 KTS

PHS 13 - Landing3 steps

	01	Power LeverIDLE
	02	Reverse ThrustAS REQUIREDCAUTION: Reverse thrust operation is limited to durations of one minute. Reverse and beta propeller modes are prohibited in flight.
	03	BrakingAS REQUIRED

PHS 14 - After Landing10 steps

	01	Deicing SystemsOFF
	02	Inertial SeparatorON
	03	Bleed AirAS REQUIRED
	04	Weather RadarOFF
	05	FlapsUP
	06	Landing LightsOFF
	07	Taxi LightON
	08	Strobe LightsOFF
	09	Pulse LightsOFF
	10	Oxygen SupplyOFF

PHS 15 - Shutdown & Securing24 steps

	01	Parking BrakeSET
	02	PARK BRAKE AnnunciatorILLUMINATED
	03	Taxi LightOFF
	04	Bleed AirOFF
	05	Cabin DifferentialDEPRESSURIZED
	06	Fan FlowAS REQUIRED
	07	Air CondOFF
	08	Power LeverIDLE FOR 1 MIN
	09	Gyro InstrumentsALL OFF
	10	EFIS MasterOFF
	11	AP/Trim MasterOFF
	12	Radio MasterOFF
	13	Propeller LeverFEATHER FOR 15s
	14	Condition LeverCUTOFF
	15	Aux Boost PumpOFF
	16	Auto Fuel SelectorMANUAL
	17	Tank SelectorPULL FOR OFF
	18	Inertial SeparatorOFF
	19	Exterior LightsALL OFF
	20	Interior LightsALL OFF
	21	IgnitionOFF
	22	Generator SelectorMAIN
	23	Source SelectorOFF
	24	Crash LeverDOWN