Give it electrical power
The battery energizes essential circuits. Ground power brings the AC buses and displays online. The auxiliary power unit (APU) can then supply electricity independently.
ENGINE START PROCEDURE
Bring the flight deck to life.
COLD & DARK
AT THE GATEFirst light. First departure.Stand B12 · Parking brake set
14°CWIND 240° / 4 KTSEA LEVEL · QNH 1013
GROUND CREW CLEARTRAINING SCENARIO 01
OVERHEAD PANEL01 — POWER & PNEUMATICS
ENGINE DISPLAY & CENTER PEDESTAL02 — START & MONITOR
LIVE SYSTEMS
Follow the energy.
Electrical power brings the cockpit online. Compressed air turns the starter. Fuel turns rotation into a running engine.
BEFORE YOU BEGIN
A start is a sequence, not a switch.
Explore the relationship between air, rotation, ignition and fuel in a simplified 737 MAX flight deck.
Give it air
The APU also supplies compressed bleed air. Turn the air-conditioning packs off and open the isolation valve so this air is available to the engine starters.
Establish rotation
GRD opens the start valve. N2 measures the high-pressure core; N1 measures the fan. MAX engines can automatically motor before fuel introduction to manage rotor bow.
Introduce fuel. Monitor.
With MOTORING cleared, N2 at 25% and N1 rotation, move the start lever to IDLE in this scenario. Fuel flow and exhaust temperature rise. The starter cuts out near 63% N2.
Read the engine
N1 %Low-pressure fan speedN2 %High-pressure core speedEGT °CExhaust gas temperatureFF KG/HFuel flow
About this simulation
This is an independent educational simulation, not Boeing training or an operational checklist. Panel placement, start timing, idle readings and system logic are simplified. The MAX includes modeled hydraulics, IRS, fire protection and an expanded preparation lesson. Flight dynamics, navigation databases and certified takeoff performance remain outside the model. Use the aircraft’s approved procedures for real operations.