Before Taxi
Enter this procedure after completion of the engine-start sequence and verification of the applicable engine-running condition. The start-lever IDLE check confirms the completed configuration; it does not replace the N2-gated fuel-admission steps in Engine Start. Complete generator, heat, air-system and start-switch selections. Verify ground equipment clear, the assigned takeoff flap configuration and the required flight-control check before taxi movement. Use the assigned taxi route and steering/braking procedure.1
Generators 1 and 2 — ON
After completion of the engine-start procedure, select generators 1 and 2 ON. Verify the required generator and bus indications.
2
Probe heat — ON
Apply the checklist’s literal OFF or ON requirement to all applicable probe heat systems for the configured aircraft.
3
Wing anti-ice — As needed
For an explicit OFF, establish OFF. For As needed, first resolve the mission’s icing decision using an approved policy; do not infer it from temperature alone.
4
Engine anti-ice — As needed
Apply the required anti-ice state to the applicable engines; resolve As needed before issuing a command.
5
Pack switches — AUTO
Set both pack switches AUTO. Verify both selector positions using the applicable detent decoding.
6
Isolation valve — AUTO
Select the isolation-valve selector AUTO. Verify the selector position; verify actual valve state separately when required.
7
APU bleed — OFF
Select APU bleed OFF in accordance with the applicable air-supply configuration. Verify the required switch and valve indications.
8
APU switch — As needed
Resolve the required APU state for this phase from the mission’s electrical/air plan, then use a validated APU switch procedure.
9
Engine start switches — CONT
Select both engine start switches CONT. Verify both rotary-switch positions. These switches are separate from the fuel/start levers.
10
Engine start levers — IDLE
Set both engine start levers to IDLE. The start levers control fuel admission; they are separate from the rotary engine start switches.
11
Ground equipment clear — Verify
Obtain actual confirmation that the tug and relevant ground equipment are clear before taxi movement.
12
Flap lever — Set takeoff flaps
When the stated condition is satisfied, select the takeoff flap setting specified by the applicable performance data. Verify the required lever detent and actual flap/slat configuration.
13
Flight controls — Check
Perform the approved control movement/check sequence and confirm actual control-surface response.
14
Lower DU — BLANK
Set the lower display unit to BLANK and observe the result.