Systems knowledge

Question 1

In AUTO, when do the fuel pumps come ON?

Answer 1

Run switch to RUN - for engine start
Low fuel pressure
Right pump for APU operation when right engine is not running

Question 2

In AUTO, when do the L (R) hydraulic pumps operate?

Answer 2

Low pressure
Flaps are out of clean
On the ground with NWS ON (Left)

Question 3

When does the bus tie normally close?

Answer 3

External power, battery power, single generator

Question 4

What is the minimum voltage required on the left battery prior to APU start?

Answer 4

20v

Question 5

What is the purpose of the PTU?

Answer 5

It is a hydraulic motor driven from the right system to provide pressure to the left system primarily to retract the gear after takeoff with a left engine failure. It also pressurizes the left hydraulic reservoir.

Question 6

When does the PTU operate in AUTO?

Answer 6

Left EDP failed
Right EDP providing pressure
Weight Off Wheels
Gear not in the selected position

Question 7

What is the purpose of the AUX HYD system?

Answer 7

To provide hydraulic pressure to the lower rudder PCU if the right hydraulic system loses pressure (<1800psi) via a switching valve.

Question 8

What are the hydraulic accumulators?

Answer 8

4 total:
Inboard/Outboard brakes
Aux system (lower rudder PCU)
Main Gear down lock assist

Question 9

Pressing the EMER DEPRESS switch does what?

Answer 9

Depressurize for smoke and fumes in the cabin
AUTO depressurizes @ 2500fpm to 14,000’
MAN Mode 3000fpm to 14,500’ or aircraft altitude whichever is lower.

Question 10

What’s needed for TOGA to present?

Answer 10

2-engines running
Flaps 10* or 20*
Speeds posted

Question 11

What do you need to get Auto-throttle?

Answer 11

TO/TO items and
Throttles idle
Airspeed below 60KTS
FMA has right TO in the scoreboard.