Apu

Front 1

Max EGT limits for Start

Back 1

800F for 1 min, then up to 1200F

Front 2

Max EGT limits for GEN ONLY

Back 2

decreases from 1200F to 800F

Front 3

Max EGT limits for EWO

Back 3

1300F

Front 4

APU RPM for normal, GEN ONLY, and EWO modes is approx __________.

Back 4

100 – 103%

Front 5

When checking the FIRE system on the APU you should see the ________ light come on then the ________ light to know that the system check’s good.

Back 5

DSBLD, FIRE

Front 6

The APU DRS OPN light will go out _______ after you select STOP and you should check that it goes out within _______.

Back 6

30 sec; 1 min

Front 7

You cannot restart an APU for ____ or ________ indications but you are allowed ___ restart for transient BITE codes.

Back 7

Fire or overheat; 1

Front 8

T/F Once an ESCU has initiated a shutdown or start, it cannot be manually interrupted by normal controls until the sequence is complete.

Back 8

TRUE

Front 9

To ensure the APU doors are not frozen shut when OAT is below 4C and visible moisture is present, ___________________________ prior to starting the APUs.

Back 9

Open and close the APU doors manually

Front 10

Automatic stopping of the APU may indicate a _______ or ________.

Back 10

Fire or overheat within the unit

Front 11

APU Start Accumulator Pressure is _____________.

Back 11

3,000 +/- 350 PSI

Front 12

EWO mode should only be used _______.

Back 12

When authorized by the proper authority

Front 13

To place both APUs in EWO mode press the ______ switch.

Back 13

EWO

Front 14

If the emergency dictates, the APU’s may be shut down by pressing the ____.

Back 14

APU DISENG switch

Front 15

Do not operate the air conditioning system with the right alternate pressurization switch in _____ for an extended period of time.

Back 15

Full increase

Front 16

The Ready light will come on if the APU is operating in either the ________ or ________ mode.

Back 16

Normal or EWO

Front 17

You have just arrived at the aircraft and you see the DRS OPEN and RDY light illuminated. This indicates the APUs _______.

Back 17

Have reached 100% in the Normal mode

Front 18

Your #1 APU is running, and the FIRE light has just illuminated. What does it mean?

Back 18

The fire detection system has been activated

Front 19

You have just arrived at the aircraft, the DRS OPEN, RDY, EWO #1 and EWO #2 lights are illuminated. What do they indicate?

Back 19

It indicates that the APUs are operating in the EWO mode

Front 20

The APU HYD accumulators are pressurized by:

Back 20

Right HYD system or the Left after Crossover

Front 21

What will the APUs do if you press the EWO start switch?

Back 21

Any non-operating APU will be started in EWO mode and any APU already operating in Normal or Generator-only mode will be upgraded to EWO mode

Front 22

Use the 18 inch handle for_____.

Back 22

Manually operating the APU doors

Front 23

Check the APU enclosure floor for evidence of fuel or HYD fluid prior to a _____ start.

Back 23

Non-EWO

Front 24

When checking APU oil quantity, make sure the ________ is retained in position during removal and installation of the dipstick.

Back 24

Dipstick O-Ring

Front 25

With the APU Generator Switch in the GEN TEST, check the ACTIVE GENERATOR lights to determine_________.

Back 25

Which APU has the generator installed

Front 26

When the Fire/DSBLD switch is pressed at the APU aft control panel, the FIRE light illuminates if the ______ checks good.

Back 26

Fire detection system

Front 27

If APU surge bleed pulsing occurs after the RDY light comes on___.

Back 27

Shut down the APUs

Front 28

Bleed air from the APUs cannot reach the air conditioning pack if the ____ is not open.

Back 28

Crossover valve

Front 29

Be sure the ram air inlet scoop and outlet ducts are open and clear before ________ the airplane with the APUs.

Back 29

Heating

Front 30

To enter either normal or generator only mode from EWO mode, ____.

Back 30

Shut down and restart the APU

Front 31

If the APU doors are manually operated in one direction, they must be _____ to reset the door linkage.

Back 31

Manually operated in the opposite direction

Front 32

(APU) A fire or overheat condition within the unit may be indicated by an _____.

Back 32

Automatic stopping of the APU

Front 33

Accomplish an emergency APU shutdown by _______.

Back 33

Pressing EMER STOP switch

Front 34

The APU is running with DRS OPEN and RDY light on. You see the DSBLD light and then FIRE light come on. What has happened?

Back 34

Someone has pressed the FIRE/DSBLD switch

Front 35

Check APU battery voltage at approximately 24 volts. If the APU battery voltage is ______, press the APU battery disengage switch to operate the APU using the airplane battery.

Back 35

LOW

Front 36

Additional start accumulator pressure may be required ______.

Back 36

If temperature is below normal

Front 37

Which of the following are advantages to operating an APU in GEN ONLY mode?

Back 37

Decreased fuel consumption, Decreased noise, Increased APU engine life

Front 38

It takes ______ seconds for the DRS OPN light to go out when the START-STOP switch is positioned to STOP.

Back 38

30

Front 39

EGT will indicate approximately _________ degrees in normal mode.

Back 39

1200 (800 for 1 min after start, then 1200F

Front 40

From the cockpit, an APU fire is indicated by

Back 40

Illumination of the APU FIRE light

Front 41

When momentarily set to GEN ONLY, the ________________ actuates the low EGT limit control circuit which prevents bleeding air for engine start or air conditioning and turns out the RDY light.

Back 41

Mode selector switch

Front 42

The DRS OPN portion of the DRS OPN/RDY lights come on when the appropriate APU inlet and exhaust doors ____________________.

Back 42

Are fully open

Front 43

The BITE INDICATORS automatically reset ______________________unless a malfunction exists.

Back 43

On the next start sequence

Front 44

A transient fault may be reset only by_________________________.

Back 44

Attempting another start

Front 45

The ______________________, when set to ON, commands the APU generator control unit (GCU) to turn on the generator.

Back 45

APU Generator Switch

Front 46

Normal system pressure on the Start Accumulator Pressure Gauge is approximately ________ PSI.

Back 46

3000 (+/- 350)

Front 47

Manual charging of the APU Start Accumulators requires approximately _____ full pump strokes to complete recharging.

Back 47

500

Front 48

The APU fire detector system remains energized for ____ minutes after the APU’s are shut down.

Back 48

5

Front 49

If takeoff is attempted with APU operating, inlet and exhaust doors will be open for approximately 1 minute after________.

Back 49

liftoff

Front 50

Prior to applying external power to the airplane, ensure ____________________ are off to prevent inadvertent actuation of gear doors, powered rudder, or spoilers.

Back 50

Hydraulic auxiliary pumps

Front 51

APU Shutdown (Normal)- Once a start-stop switch has been set to STOP, the APU cannot be restarted until the _____________________.

Back 51

DRS OPN light goes out