Cockpit Preflight Checklist

James Albright (a former G450 driver)

Updated: 2013-10-30

This is pretty straight forward. You really should pick up the small spiral bound checklist and do this step-by-step, but ignore the bit about setting the flaps in the G450. See Step 9 for the reasoning behind this.

Everything here is from the references shown below, with a few comments in an alternate color.

 AFM Procedure

[G450 Airplane Flight Manual §2-01-10]

All photos from the author's cockpit

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  1. Circuit Breakers (EERs, PDBs, COPs) . . . CHECK

g450_cockpitpreflightinspection_01b_leer.png

LEER

g450_cockpitpreflightinspection_01c_reer_top.png

REER (top)

g450_cockpitpreflightinspection_01d_reer_bottom.png

REER (bottom)

g450_cockpitpreflightinspection_01e_left_pdb.png

Left PDB

g450_cockpitpreflightinspection_01f_right_pdb.png

Right PDB

g450_cockpitpreflightinspection_01g_door_lock.png

You had to unlock and move the interior door to get to the LEER and Left PDB, when you move the door back to its stowed position, don't forget to lock it again. (If you don't it will come crashing aft during takeoff.)

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2. Emergency Power . . . CHECKED

Press the Emergency Power ARM switch and verify both of the ON capsules are lit and . . .

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. . . the pilot's Audio Control Panel should be powered

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. . . the pilot's clocks should be powered

g450_cockpitpreflightinspection_02d_copilot_clock.png

. . . as well as the copilot's clock.

g450_cockpitpreflightinspection_03a_mcdu1.png

3. Standby Instruments / MCDU #1 (Fuel Quantity) / MCDU #3 . . . CHECKED

The EBDI and SFD should be powered. MCDU #1 should display fuel quantity (the engine data will be dashed when the engines are not operating)

g450_cockpitpreflightinspection_03b_mcdu3.png

MCDU #3 will display backup radio information

g450_cockpitpreflightinspection_04_batteries_on.png

4. LEFT / RIGHT BATTERIES . . . ON (22 - 27V DC)

g450_emergency_power_panel_off.png

5. EMERGENCY POWER-OFF . . . SELECT

g450_cabin_pressure_control_panel.png

6. CABIN PRESSURE CONTROL . . . CHECK OUTFLOW VALVE OPEN

Unless the main cabin door has been opened more than once since MANUAL mode was selected, this should just require deselecting MANUAL mode, since with WOW the auto mode will drive it open.

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7. Gear Handle / Lights . . . DOWN / 3 GREEN

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8. Parking Brake Accumulator Pressure . . . CHECK

You will need to cycle the parking brake a few times to get to the accumulator pressure, which should read 1200 psi at 70°F, varying 25 psi for each 10°F multiple.

g450_cockpitpreflightinspection_09_flaps10.png

9. FLAPS . . . SET (10° RECOMMENDED FOR PREFLIGHT)

Yes, this works just fine in the GV/G550, but it doesn't in the G450. The Operating Manual once called for using the EMER STAB and now calls for using ALT FLAP. Both procedures often result in a FLAPS FAIL state. You should leave the flaps where they are until you have AC power on the aircraft.

g450_cockpitpreflightinspection_10_parkingbrake.png

10. PARK / EMERGENCY BRAKE . . . SET

g450_cockpitpreflightinspection_08_parkingbrakepressure.png

11. BRAKE PRESS Indicator . . . CHECK (3000 PSI)

g450_cockpitpreflightinspection_12_fuelquantity.png

12. Fuel Quantity . . . CHECK

g450_cockpitpreflightinspection_13_oxygen.png

13. Oxygen Quantity . . . CHECK

g450_cockpitpreflightinspection_14_batteriesoff.png

14. LEFT / RIGHT BATTERIES . . . OFF

 References:

Gulfstream G450 Airplane Flight Manual, Revision 35, April 18, 2013