How do I start an aircraft cold and dark in X-Plane 11?
To start an aircraft cold and dark in X-Plane 11, load at a ramp with Start with engines running disabled, then follow that aircraft's checklist: secure it, establish electrical power, configure its fuel and start systems, crank and introduce fuel at the prescribed point, monitor the start, then complete the after-start checks.
How do I load X-Plane 11 in a true cold-and-dark state?
Select a ramp, gate or parking stand and disable Start with engines running in the flight setup before loading the aircraft.
- Choose a parking position. Avoid a runway start: it leaves you occupying an active runway while your attention is inside the cockpit.
- Disable the running-engine option. This tells X-Plane 11 to load the aircraft shut down rather than ready for departure.
- Check the aircraft's own state menu. Detailed add-ons may offer states such as Cold and Dark, Turnaround or Ready to Start. They may also restore the last saved cockpit state after X-Plane loads, overriding the simulator's general setting.
A cold-and-dark cockpit normally has stopped engines, no main electrical power and fuel controls in their shutdown positions. It does not mean forcing every visible switch off. Guarded, emergency and standby systems should remain where the aircraft checklist places them.
What is the correct cold-and-dark start sequence?
The correct sequence is the checklist supplied with the aircraft; the steps below are a reliable framework, not a substitute for model-specific switch positions or starter-speed limits.
- Secure the aircraft. Apply the parking brake and use chocks if the model provides them. Some detailed aircraft simulate parking brakes that depend on stored hydraulic pressure, so chocks are the safer choice during a long cold start.
- Check the controls. Put throttles, mixture, condition levers and fuel levers in the positions required before start. On turbines, fuel normally remains at cutoff until the starter has produced the required core speed; a piston checklist may call for mixture and priming before cranking.
- Establish electrical power. A light piston aircraft usually needs its battery or electrical master. Larger turboprops and jets may need external power or an APU so the starter has enough electrical or pneumatic power.
- Prepare fuel and start systems. Confirm that fuel is aboard, select a tank containing fuel, open the required shut-offs and set pumps, magnetos, igniters, bleed air and start selectors according to the checklist.
- Crank and introduce fuel correctly. Confirm that the propeller or engine core is turning. On a turbine, do not introduce fuel before reaching the specified starter speed; on a piston engine, follow the applicable cold, hot or flooded-start procedure.
- Monitor the start. Watch RPM, oil pressure and, on turbine engines, ITT or EGT. Cut off fuel and follow the aborted-start checklist if there is no light-off, the temperature rises uncontrollably or the engine stops accelerating.
- Complete the after-start checks. Once the engine is stable, bring the alternator or generator online and configure the remaining electrical, hydraulic, pneumatic, lighting and anti-ice systems. Disconnect external power only when the aircraft has another suitable power source.
On many simple piston aircraft, the avionics master stays off during cranking to reduce electrical load. Transport aircraft are different: displays, radios and the flight-management system may already be powered from an APU or external source before engine start.
Do all X-Plane 11 aircraft start the same way?
No; all combustion engines need rotation, fuel and ignition, but the order and cockpit controls differ substantially between piston, turboprop and jet aircraft.
| Engine type | Typical preparation | Fuel timing | Main indications |
|---|---|---|---|
| Piston | Fuel selector, mixture, throttle, primer or boost pump as required, magnetos | Usually configured before or during cranking; the exact method depends on the engine and temperature | Oil pressure, smooth idle and charging system |
| Turboprop | Battery, external power if required, condition lever at cutoff, pumps, ignition and starter | Condition lever moved from cutoff after the prescribed starter or Ng speed | ITT, Ng, oil pressure and stable idle |
| Jet | Battery plus APU or external power as required, fuel pumps, bleed or electrical start source, start selector | Fuel lever moved from cutoff at the specified N2 or core speed | EGT, N1/N2, oil pressure and automatic starter cut-out |
Custom aircraft may model bus ties, APU bleed, starter limits, fuel pressure and other interlocks that simpler models omit. When you need the switch-by-switch flow for a particular model, our aircraft-specific X-Plane start-up guidance can help interpret its controls and terminology. Electric aircraft and gliders do not use this combustion-engine sequence.
Why will the engine not start in X-Plane 11?
Most X-Plane 11 no-starts are caused by missing starter power, interrupted fuel flow, incorrect ignition settings or a hardware assignment overriding the cockpit controls.
- The starter does nothing: Check the battery or electrical master, the selected external or APU power source, the starter selector and the assigned starter command. A persistent add-on may also be simulating a discharged battery or a start interlock.
- The engine cranks but never fires: Confirm fuel quantity, the selected tank, shut-off valves, mixture or fuel cutoff, pumps, magnetos and igniters. A piston engine can also be under-primed or flooded.
- The engine starts and immediately dies: The mixture, condition lever or fuel lever may still be at cutoff, or fuel may not be flowing from the selected tank. Watch for a cockpit lever that moves back after you release it.
- The turbine temperature rises too quickly: Fuel was probably introduced before adequate starter speed, or the starter source is too weak. Move the fuel control to cutoff, follow the aircraft's aborted-start procedure and allow the engine to spool down before trying again.
- The turbine lights but will not reach idle: This is a hung start. Check starter power, bleed-air configuration and fuel-lever position rather than allowing the temperature to keep climbing.
- The engine runs but the panel remains dark: Check the generator or alternator, avionics master, inverter, bus ties and display-brightness knobs. Battery power alone may energise only part of the electrical system.
- Levers snap back or jitter: A joystick, throttle quadrant or gamepad axis is overriding the mouse. Remove duplicate throttle, mixture, propeller and condition-lever assignments, then recalibrate; our multi-engine throttle and axis assignment guide covers the common binding conflicts.
The mistake we see most often is checking switches repeatedly while an unnoticed hardware axis keeps commanding cutoff. If the sequence is correct but the aircraft still refuses to start, also inspect X-Plane's active failures and any maintenance or persistence system supplied by the add-on.
Can I use auto-start when the manual start fails?
Yes, X-Plane 11's auto-start command is useful as a recovery and diagnostic tool, although customised aircraft may require their own automatic-start or ready-to-run function.
If auto-start works, the aircraft itself is capable of running and the manual problem is probably a missed switch, incorrect timing or control assignment. If auto-start also fails, check fuel state, active failures, battery condition and the add-on's saved state. Auto-start does not teach the correct checklist and may not operate systems controlled by custom plugins.
Can X-Plane 11 remember the cold-and-dark state?
X-Plane 11 can retain basic flight and situation choices, but a custom aircraft may save its cockpit systems separately or may not restore every plugin-controlled switch.
Keep Start with engines running disabled and use the aircraft's own default-state or persistence option when one is provided. After loading a saved situation, verify the parking brake, electrical master and fuel controls rather than assuming the complete shutdown state has been restored.