| Tie-downs / Chocks / Covers | REMOVED |
|---|---|
| Fuel Quantity | CHECK VISUALLY (Both mains & tip tanks - 98 gal total, 92 gal usable) Drain samples from all sumps (4 main, 2 tip tank drains) |
| Fuel Caps | SECURED (Mains and tip tanks) |
| Oil Level (Both Engines) | CHECK (8 quarts each, min 6 quarts, max 12 quarts) Use turbo-rated oil (Aeroshell W100 Plus or equivalent) |
| Oil Caps / Dipsticks | SECURED |
| Turbochargers / Exhaust | VISUAL CHECK (No cracks, sooting, or oil leaks around both turbo systems) |
| Intercoolers | CHECK (Fins clear of debris, no damage) |
| Propellers (Both) | CHECK (No nicks, secure, spinner fasteners tight) |
| Landing Gear | DOWN & VISUAL CHECK (Struts inflated, tires 44 psi mains, 60 psi nose) |
| Gear Doors | CHECK (No damage, secure, hydraulic leaks) |
| Control Surfaces | FREE & CORRECT (Ailerons, Elevator, Rudder, Flaps, Trim tabs, Cowl flaps) |
| Pitot Tubes (2) | COVERS REMOVED (Left & right systems) |
| Static Ports (2) | CLEAR |
| Empennage | CHECK (Horizontal & vertical stabilizer, elevator, rudder, trim tabs) |
| Master Switches (Both) | OFF during walk-around |
| Parking Brake | SET |
|---|---|
| Battery Masters (2) | OFF |
| Avionics Master | OFF |
| Mixtures (Both) | IDLE CUTOFF |
| Throttles (Both) | 1/2 INCH |
| Prop Controls (Both) | FULL FORWARD (High RPM) |
| Condition Levers (Beta) | FORWARD (If equipped - normal flight position) |
| Turbo Controllers (Both) | FULL FORWARD (Takeoff position) |
| Cowl Flaps (Both) | OPEN (For ground ops) |
| Fuel Selectors (2) | MAINS ON (Tip tanks OFF unless needed) |
| Fuel Pumps (4) | ALL OFF (Mains & aux pumps) |
| Crossfeed | OFF |
| Gear Lever | DOWN (Verify 3 green lights during battery check) |
| Flaps | UP |
| Trim | TAKEOFF (Neutral elevator, rudder centered) |
| Circuit Breakers | IN (All systems) |
| Seat / Rudder Pedals | ADJUSTED & LOCKED |
| Shoulder Harnesses | CHECK & STOWED |
| Fire Extinguisher | CHECK (Accessible, charged) |
| Area | CLEAR BOTH SIDES |
|---|---|
| Battery Masters | BOTH ON |
| Fuel Pump (Left Main) | ON (Prime 4-6 sec cold, 2-3 sec hot) |
| Mixture (Left) | RICH |
| Throttle (Left) | 1/4 INCH |
| Ignition (Left) | START (Release at 800-1000 RPM) |
| Oil Pressure (Left) | CHECK (Within 30 sec, 25-100 psi, green 60-90 psi) |
| Fuel Pump (Left) | OFF after start |
| Repeat for Right Engine | SAME PROCEDURE |
| Alternators (Both) | ON / CHECK (Ammeters charging, low voltage lights out) |
| Engine Gauges | MONITOR BOTH (CHT 150-400°F, Oil Temp 100-245°F, EGT normal) |
| Turbo Systems | LISTEN (Normal sounds, no unusual vibrations) |
| Location | RUN-UP AREA (Pointed into wind, clear area) |
|---|---|
| Parking Brake | SET |
| Flight Controls | FREE & CORRECT (Full deflection) |
| Engine Instruments | CHECK GREEN BOTH (Oil pressure 60-90 psi, Oil temp rising, CHT < 400°F) |
| Propeller Controls | CYCLE BOTH (2300 RPM to 2000 RPM, check smooth operation) |
| Magnetos (Each Engine) | CHECK (BOTH → L → BOTH → R → BOTH) Max drop: 175 RPM Difference L/R: < 50 RPM |
| Turbo Controller Check | TEST BOTH (Advance controllers, MP should increase without throttle movement) |
| Alternators / Ammeters | CHECK (Both charging +10 to +60 amps) |
| Vacuum System | CHECK (4.5-5.5 inHg, suction gauge normal) |
| Fuel Flow | CHECK BOTH (Steady at run-up RPM) |
| Gear System | CHECK (Warning horn when either throttle reduced with gear up) |
| Flaps | OPERATE (Cycle to 15° and retract) |
| Autopilot / Flight Director | TEST (If equipped, verify disengage functions) |
| De-ice / Anti-ice | TEST AS REQUIRED (Pitot heat, prop heat, windshield heat) |
| RPM Sync | SYNCHRONIZE (Use propeller controls to match RPM) |
| Throttles | 1000–1200 RPM (After checks, synchronized) |
| Parking Brake | RELEASED |
|---|---|
| Flight Controls | FREE & CORRECT (Final check) |
| Fuel Selectors | MAINS ON (Tip tanks OFF for takeoff) |
| Fuel Pumps (Main) | BOTH ON (For takeoff and landing) |
| Mixtures | FULL RICH (Below 75% power or 10,000 ft density altitude) |
| Prop Controls | FULL FORWARD (High RPM, 2700) |
| Turbo Controllers | FULL FORWARD (Takeoff position) |
| Condition Levers | FORWARD (Normal flight) |
| Cowl Flaps | OPEN (For takeoff and climb) |
| Flaps | AS DESIRED (0° normal, 15° short/soft field) |
| Trim | TAKEOFF (Neutral elevator, rudder centered) |
| Avionics / Radios | SET (COM/NAV, transponder ALT, autopilot OFF) |
| Altimeters (2) | SET (To current setting, compare) |
| Directional Gyro | SET (To magnetic compass) |
| Clock | START (Note takeoff time) |
| Doors / Windows | CLOSED & LATCHED |
| Max Takeoff Power | 36" MP / 2700 RPM (5 min limit, sea level) Monitor CHT closely - keep below 420°F |
| Engine-Out Briefing | REVIEW Vmc: 78 KIAS, Blue line (Vyse): 98 KIAS Below 400' AGL: Land straight ahead Above 400' AGL: Maintain blue line, feather dead engine |
| Area | CLEAR (Final runway check both directions) |
|---|---|
| Throttles | SMOOTHLY TO FULL (36" MP, 2700 RPM, synchronize) |
| Engine Instruments | MONITOR BOTH (Oil pressure 60-90 psi, CHT < 420°F) |
| Airspeed | ALIVE at 50 KIAS, rotate at 85-90 KIAS |
| Positive Rate | GEAR UP (At 300-500 ft AGL, < 120 KIAS) |
| Climb Speed | Vy (Single Engine): 98 KIAS (Blue line) Vy (All Engines): 105 KIAS Vx: 92 KIAS |
| Climb Power | 32" MP / 2500 RPM (75% power climb) |
| Gear | UP & VERIFIED (3 green lights out) |
|---|---|
| Flaps | UP (If used, retract after positive rate) |
| Fuel Pumps | MAIN PUMPS OFF (Above 500 ft AGL, positive rate) |
| Climb Power | 32" MP / 2500 RPM (75% power) Turbo maintains MP to critical altitude (~16,000 ft) |
| Climb Speed | 110 KIAS (Normal multi-engine climb) For engine cooling and visibility |
| Mixtures | LEAN FOR CLIMB (Above 5000 ft, monitor EGT) |
| Cowl Flaps | AS REQUIRED (Adjust to maintain CHT 300-380°F) |
| Engine Gauges | MONITOR CLOSELY (CHT ≤ 420°F, Oil Temp ≤ 245°F, compare both engines) |
| RPM Sync | MAINTAIN (Use propeller controls to keep engines synchronized) |
| Optimum Altitude | 12,000-18,000 ft (Turbo efficiency range) |
|---|---|
| Power Setting | 28-30" MP / 2300-2400 RPM (65-75% power) Use turbo controllers to maintain desired MP |
| Mixtures | LEAN CAREFULLY Best power: 100°F rich of peak EGT Best economy: 50°F lean of peak EGT |
| True Airspeed | 180-200 KTAS (75% power at 16,000 ft) |
| Fuel Flow (Total) | 24-28 GPH (75% power, both engines) |
| Engine Gauges | MONITOR BOTH (CHT 320-380°F ideal, Oil Temp 180-220°F ideal) Compare engines - max CHT spread 50°F |
| Cowl Flaps | ADJUST (Usually partially closed in cruise) |
| Fuel Management | BALANCE (Switch tanks every 30-45 minutes) Tip tanks: Use for cruise, OFF for takeoff/landing |
| Oxygen | USE AS REQUIRED (FAR 91.211: Above 12,500 ft for >30 min, above 14,000 ft at all times) |
| Power Reduction | GRADUAL & SYMMETRICAL (Reduce MP 2-3" at a time) |
|---|---|
| Descent Power | 18-20" MP / 2000-2200 RPM (Initial descent) Keep power above 15" MP to prevent overcooling |
| Cooling Rate Limit | < 50°F/min CHT decrease (Critical for turbo engines) |
| Mixtures | ENRICH (Below 10,000 ft MSL) |
| Descent Speed | 140-160 KIAS (With 500-1000 FPM descent) Do not exceed 195 KIAS (Vne) |
| Cowl Flaps | CLOSED (To prevent overcooling) |
| Turbo Controllers | FULL FORWARD (During descent) |
| Fuel Pumps (Main) | BOTH ON (Below 3000 ft AGL) |
| Gear Speed | 140 KIAS MAX (Do not extend above this speed) |
| Before Landing Check | START (When within 10 NM or 3000 ft AGL) |
| Fuel Selectors | MAINS ON (Tip tanks OFF) |
|---|---|
| Fuel Pumps (Main) | BOTH ON |
| Mixtures | FULL RICH (Below 5000 ft MSL) |
| Prop Controls | FULL FORWARD (High RPM) |
| Turbo Controllers | FULL FORWARD |
| Condition Levers | FORWARD |
| Gear | DOWN (Below 140 KIAS, verify 3 green) Gear warning horn test: Reduce one throttle briefly |
| Flaps | AS DESIRED 10° on downwind: 120 KIAS 25° on base: 110 KIAS Full (40°) on final: 100 KIAS |
| Approach Speed | 100-110 KIAS (Full flaps, add 1/2 gust factor) |
| Trim | SET for approach speed |
| Cowl Flaps | OPEN (For landing and ground cooling) |
| Seat Belts / Harnesses | SECURED (All occupants) |
| Landing Lights | ON (If equipped) |
| Engine-Out Landing | BRIEF (Maintain 110 KIAS, flaps as needed, identify landing runway) |
| Final Approach | 100 KIAS (With full flaps, adjust for conditions) |
|---|---|
| Threshold Crossing | 90 KIAS (50 ft over threshold) |
| Flare | GENTLY (Power to idle at 10-20 ft, gradual back pressure) |
| Touchdown | MAIN WHEELS FIRST (Airspeed 80-85 KIAS) |
| After Touchdown | NOSE WHEEL DOWN (Gently, after aerodynamic braking) |
| Flaps | UP (After clearing runway) |
| Propellers | HIGH RPM (Full forward for taxi) |
| Braking | AS REQUIRED (Differential for steering if needed) |
| Flaps | UP |
|---|---|
| Transponder | STANDBY |
| Landing Lights | OFF |
| Fuel Pumps | MAIN PUMPS OFF (Unless low fuel or rough ground) |
| Cowl Flaps | OPEN (For ground cooling - CRITICAL for turbos) |
| Mixtures | AS REQUIRED (May need to lean for taxi at high elevation) |
| Engine Gauges | MONITOR BOTH (During taxi) |
| Taxi Speed | WALKING PACE (Consider twin prop blast) |
| Parking | INTO WIND (If possible, for cooling) |
| Cool-Down Period | 5 MINUTES MINIMUM (At 1000-1200 RPM) CRITICAL: Allows turbo bearings to cool before oil stops
|
|---|---|
| CHT Check | < 300°F BOTH (Before shutdown - ideally below 250°F) |
| Parking Brake | SET |
| Avionics / Radios | OFF |
| Fuel Pumps | ALL OFF |
| Mixtures | IDLE CUTOFF BOTH (Smoothly to full lean) |
| Ignitions | OFF BOTH (After engines stop) |
| Battery Masters | BOTH OFF |
| Cowl Flaps | CLOSED |
| Control Locks | INSTALL (If available) |
| Turbo Note | LISTEN (After shutdown, normal "tinging" as turbos cool) |
| Control Locks | INSTALL (Aileron, elevator, rudder if available) |
|---|---|
| Pitot Covers (2) | INSTALL |
| Static Port Covers | INSTALL (If available) |
| Tie-downs | SECURED (Nose, both mains, both wings minimum) |
| Chocks | INSTALLED (Front of main wheels) |
| Fuel Selectors | OFF |
| Baggage / Documents | REMOVED |
| Doors | LOCKED |
| Logbook Entry | COMPLETE (Hobbs/Tach times, discrepancies, note any engine/turbo anomalies) |