Ground procedures

Question 1

Engine start :N1 rotation N2 is at 25% or

(if 25% N2 is not possible), at maximum motoring and a minimum of 20% N2

Answer 1

Maximum motoring occurs when N2 acceleration is less

than 1% in approximately 5 seconds.

Question 2

ABORTED ENGINE START

Answer 2

• the N1 or N2 does not increase or increases very slowly after the EGT increases
• there is no oil pressure indication by the time that the engine is
stable at idle
• the EGT does not increase by 10 seconds after the engine start lever
is moved to IDLE detent
• the EGT quickly nears or exceeds the start limit 725

Question 3

Taxi Speed

Answer 3

Normal taxi speed is 20 knots, adjusted for conditions.
On long straight taxi , speeds up to 30 knots are acceptable.
On a dry surface, use approximately 10 knots for turn angles.
During taxi, the momentary use of idle reverse thrust may be needed on slippery surfaces for airplane control.
Differential thrust may be required at high weights during tight turns. This should only be used as required to maintain the desired speed in the turn.

Question 4

Derated Takeoff Thrust (Fixed Derate)

Answer 4

is considered a takeoff operating limit since minimum control speeds (VMCG and VMCA) and stabilizer setting based on. Thrust levers should not be advanced unless conditions are encountered during the takeoff where additional thrust is needed on both engines, such as a windshear condition.
Note: If an engine failure occurs during takeoff, any thrust increase could result in loss of directional control.
Note: Derated takeoff thrust (fixed derate) may be used for takeoff on a wet runway and on a runway contaminated with standing water, slush, snow, or ice

Question 5

Takeoff Field Length

The takeoff field length is the longest of the following:

Answer 5

Accelerate-Go Distance- E/O 1 sec before V1. DER 35’
Accelerate-Stop Distance
1.15 times the all engine takeoff distance to 35’ DER
Include max braking+speedbrakes +no reverse

Question 6

Takeoff gross weight must not exceed :

Answer 6

• climb limit weight,
• field length limit weight,
• obstacle limit weight,
• tire speed limit weight,
• brake energy limit.

Question 7

lack of displayed V speeds during Take Off

Answer 7

The V2 speed should be displayed on the MCP and primary airspeed indicators. If neither pilot recalls the correct rotation speed, rotate the airplane 5 to 10 knots before the displayed V2 speed.
does not fit any of the published criteria for rejecting a takeoff