7 - Engine, APU Flashcards by TJ Steele

APU Selector - ON (4)

opens APU fuel valve and inlet door
arms APU bleed air isolation valve
activates DC or AC fuel pump

How well did you know this?

Not at all

Perfectly

The APU drives ___ generator(s) capable of supplying the entire electrical load of the airplane for normal ground operations. Electrical power __(is/is not)__ available in flight.

is NOT

How well did you know this?

Not at all

Perfectly

An APU start requires both the ______ and _____

main and APU batteries

How well did you know this?

Not at all

Perfectly

Rotating the APU selector momentarily to START begins the start sequence. The ____ and _____ open simultaneously. Starter engagement occurs when _______ is fully open. The start sequence continues with ignition, lightoff, and engine acceleration to rated speed

fuel valve

inlet door

How well did you know this?

Not at all

Perfectly

The EICAS memo message ______ is displayed when the APU selector is ON and APU N1 RPM exceeds ____ N1

APU RUNNING

95% N1

How well did you know this?

Not at all

Perfectly

Rotating the APU selector to OFF begins the shutdown cycle by closing the ______. The APU continues running unloaded for a ______ cooldown period. When the cooldown period finishes, the APU shuts down.

APU bleed air valve

60 sec

How well did you know this?

Not at all

Perfectly

If the Battery switch is positioned OFF prior to _____, the APU will shut down immediately

completion of the cooldown period

How well did you know this?

Not at all

Perfectly

A complete shutdown sequence with fire detection capability can be assured by waiting at least _______ after the APU selector is rotated to OFF before placing the battery switch OFF.

If a limit is exceeded or a fire detected, the APU
_____

2 mins

shuts down immediately

How well did you know this?

Not at all

Perfectly

TO 1

D-TO 2

derate one takeoff thrust

derate two assumed temperature derated takeoff thrust

How well did you know this?

Not at all

Perfectly

Thrust Reverser Indication:

REV (amber) -

REV (green) -

in transit

fully deployed

How well did you know this?

Not at all

Perfectly

EGT indication:

(white) -
(amber) -
(red) -

normal operating range

continuous limit reached

start or takeoff limit reached

How well did you know this?

Not at all

Perfectly

During TO or GA, EGT indication remains white for ______, or for ______ if one engine fails or is shut down, when continuous EGT limit is reached or exceeded

5 min

10 min

How well did you know this?

Not at all

Perfectly

EGT Red Line: displayed (red) - ______ or _____

takeoff EGT limit

multiple engine in-flight start limit

How well did you know this?

Not at all

Perfectly

EGT Start Limit Line

displayed (red): ________ until _________

with Fuel Control switch in CUTOFF

N2 reaches a predetermined RPM

How well did you know this?

Not at all

Perfectly

Secondary Engine Exceedance Cue on Primary EICAS displayed (cyan) - VVVVVV
• ____________
• ____________
• ____________

secondary engine parameter exceedance is occurring
no longer displayed when exceeding parameter returns to normal operating range
replaces status cue if displayed

How well did you know this?

Not at all

Perfectly

The In-Flight Start Envelope displays on Primary EICAS (magenta) showing _______ when ______

airspeed range for an in-flight start at the current flight level or maximum flight level, whichever is lower

the respective Engine Fire switch is in and a Fuel Control switch is in CUTOFF

How well did you know this?

Not at all

Perfectly

When the Fuel Control Switch is in CUTOFF, Fuel-on Indicator on Secondary EICAS (magenta) indicates _______

minimum N2 RPM to move Fuel Control switch to RUN during engine manual start

How well did you know this?

Not at all

Perfectly

Engine Vibration Source with the highest vibration displays on Secondary EICAS:

FAN -
LPT -
N2 -
BB -

Fan

Low Pressure Turbine

N2 rotor

broad band (source is unknown and 
average vibration displayed)

How well did you know this?

Not at all

Perfectly

Crossbleed (X-BLD) Start Indication on Secondary EICAS indicates crossbleed air is recommended for in-flight start (magenta) if: ______ and _____

in-flight start envelope displayed

airspeed lower than required for a windmilling start

How well did you know this?

Not at all

Perfectly

Partial secondary engine indications will be displayed when the secondary engine
display is not selected and _______

a limit or operating parameter has been reached

an oil quantity differential is exceeded

How well did you know this?

Not at all

Perfectly

What happens; FUEL CONTROL Switch RUN

Autostart switch ON) - (2/3

opens spar fuel valve
opens engine fuel valve
EEC sequences start valve, fuel metering valve, and igniter operation

How well did you know this?

Not at all

Perfectly

What happens; FUEL CONTROL Switches RUN

Autostart switch OFF) - (3

opens spar and engine fuel valves
opens fuel metering valve
energizes igniters

How well did you know this?

Not at all

Perfectly

What happens; FUEL CONTROL Switches - Cutoff (4)

closes fuel valves
removes igniter power
commands respective hydraulic demand pump to operate when Demand Pump selector in AUTO
unlocks Engine Fire switch

How well did you know this?

Not at all

Perfectly

Engine START Switches (bleed/start valves):

Pull (Autostart switch ON) - (2)

Pull (Autostart switch OFF)- (2)

Releases at ___ N2 RPM - (2)

(ON) -
• arms start valve
• opens engine bleed air valve

(OFF)-
• opens start valve
• opens engine bleed air valve

50%
• closes start valve
• closes engine bleed air valve

How well did you know this?

Not at all

Perfectly

Engine START Switches release at ______

50% N2 RPM * start valve closes * engine bleed air valve closes

Standby (STBY) IGNITION Selector NORM - What is the power source? What is the backup source? 1/2 -

* AC power system supplies power to selected igniters * standby power system supplies power continuously to all igniters if AC power system is not powered 1 or 2 - standby power system supplies power continuously to respective igniters

What happens; Continuous (CON) IGNITION Switch - ON (2)

* selected igniters operate continuously | * commands approach idle minimum

AUTO IGNITION Selector - SINGLE, which igniter(s) is used for start? Ground - Inflight -

* EEC alternates igniter 1 and igniter 2 after every second ground start * EEC selects both igniters for in-flight start or flameout

AUTO IGNITION - Selected igniters operate when any of the following occur: (4)

* during start when N2 RPM less than 50% * trailing edge flaps out of up position * nacelle anti-ice ON * engine flameout

Engine Start Lights : Illuminated -

start valve is open

What primary engine indications always display on primary EICAS ?

N1 and EGT

EGT indications are inhibited from changing color to amber during takeoff or go-around for ______ after the TO/GA switch is pushed, even though EGT reaches the continuous limit. The amber color change is inhibited for ______ if one engine fails or is shutdown

5 min 10 min

The EGT indicator has a ______ displayed by a red line. The indication changes color to red if EGT reaches the ______

takeoff limit takeoff limit

An engine indication changes color back to white when the parameter returns to the normal operating range. The box enclosing the digital indicator remains red as a reminder of the exceedance. The red box color can be selectively canceled to white or recalled to red by _______

pushing the cancel or recall switch on the EICAS Display Select panel

The oil quantity indication changes color to amber if _____ or if _____

low oil quantity is detected the oil quantity differential is exceeded

``` N1 Operating Limit Line - Maximum N1 Line - Reference N1 - Target N1 - Command N1 Indicator - ```

``` Red Amber Green - (thrust ref selected by FMC) Magenta - (commanded by FMC) White - (commanded by thrust lever position) ```

Secondary engine indications display in partial format if _______ when the secondary engine display is not selected

a secondary engine parameter exceeds the normal operating range

The EEC has two control modes: ____ and ____ In both modes, the EEC uses _____ as the controlling parameter for setting thrust.

normal and alternate N1 RPM

Electrical power for each EEC is provided by ______ mounted on the engine accessory gearbox

an alternator

What corrections must the pilot make for OAT and pressure in order to maintain constant thrust? What corrections must the pilot make when using NAI and or WAI?

When the engine is stabilized, the EEC keeps thrust constant independent of outside air temperature and pressure. The EEC adjusts thrust for changes in nacelle and wing anti-ice and airplane pressurization bleed requirements.

The EEC continuously computes maximum N1. Maximum thrust is available during ____ phase of flight by moving the Thrust lever to _____

any the full forward position

Alternate mode __(does/does not)__ provide thrust limiting at maximum N1. Maximum N1 is reached at a Thrust lever position ______

does not less than full forward

Do thrust levers need to be adjusted to maintain desired thrust as environmental conditions and bleed requirements change? EEC normal mode - EEC alternate mode -

No Yes

Does thrust change when EEC automatically transfers control from normal mode to alternate mode? Does thrust change when alternate mode is selected manually?

no change thrust increases (When thrust is greater than idle, the Thrust lever should be moved aft prior to manually selecting alternate mode so thrust does not exceed maximum N1)

If the EECs are in the alternate mode, advancing the Thrust levers full forward ______

provides some overboost and should be considered only during emergency situations when all other actions have been taken and terrain contact is imminent

If control for any EEC transfers from normal to alternate, the autothrottle ______ Can autothrottle be activated after all EECs are manually transferred to alternate mode?

disconnects Yes

Approach idle is selected in flight when: (3)

* nacelle anti-ice is ON * flaps are in landing position * Continuous Ignition switch is ON Approach idle decreases acceleration time for go-around

The start limit remains displayed until _____

N2 reaches a predetermined RPM (idle)

An in-flight start envelope displays _(where)_ when a Fuel Control switch is moved to CUTOFF in flight. The in-flight start envelope displays _(what)_ to ensure an in-flight start at the current flight level.

on primary EICAS the airspeed range

If the current flight level is greater than the maximum start altitude on the in-flight start envelope, ______ display X-BLD displays next to _____ if crossbleed air is necessary for start

the maximum start altitude and related airspeed range the N2 indication

During Auto Start the EEC opens the start valve and the Start light illuminates. At a predetermined N2, the EEC _____. ``` ___ igniter(s) is/are normally selected for ground start, while ___ igniter(s) is/are selected for in-flight start. ```

opens the fuel metering valve and energizes the selected igniter one two

Starter cutout occurs at ______

50% N2

During autostart, the EEC monitors _____ and ______ until the engine stabilizes at idle

EGT N2 RPM

During ground start, the autostart system monitors engine parameters and aborts the start for any of the following malfunctions: (3)

* hot start * hung start * no EGT rise

The autostart system does not monitor ______ or _______

oil pressure | N1 rotation

If the EEC detects no EGT rise, it _______ | The engine motors for ______ and then _______

cuts off fuel and ignition 30 seconds applies fuel and ignition to both igniters for another attempt

If the EEC detects no EGT rise, it makes ___ attempts before aborting the autostart sequence. The engine motors for ______ before the start and engine bleed air valves close

3 | 30 sec

If there is an EGT rise, but the EEC detects an impending hot start or a hung start before starter cutout, it ______ The EEC makes ___ attempts before aborting the autostart sequence The engine motors for ____ before the start and engine bleed air valves close

cuts off fuel, adjusts the fuel schedule, then reapplies fuel for another attempt 3 30 secs

If the EEC detects an impending hot start or a hung start AFTER starter cutout, _______

the autostart sequence is aborted immediately | The engine does not motor

During IN-FLIGHT flameout and/or start, the EEC ________ The EEC allows the EGT to _______ before cutting off fuel

cuts off and then reapplies fuel. increase past the start limit to the takeoff limit

During in-flight flameout and/or start the autostart sequence is not automatically aborted. The EEC continues making start attempts until ________

the engine stabilizes at idle or the Fuel Control switch is moved to CUTOFF

Auto relight is provided if _______

a flameout is detected | A rapid decrease in N2 occurs, or N2 is less than idle RPM. Both igniters are used

Manual Start: Pulling the Start switch out (2) ______ When N2 RPM reaches ______, the Fuel Control switch is moved to RUN

opens the start and engine bleed air valves the fuel-on indicator

During a manual start what happens when the Fuel Control switch is moved to RUN? (4)

the fuel metering, spar and engine fuel valves open and the selected igniter(s) energizes (one igniter is normally selected for ground start while two igniters are selected for in-flight start)

Ignition is selected for each engine when _______, _______, or _______

related Start switch is OUT nacelle anti-ice is on flameout is detected

Ignition is selected for all engines when | _______ or ______

trailing edge flaps are out of the up position Continuous Ignition switch is ON

The ______ is the normal power source for ignition The ______ provides a backup source

AC power system standby power

When the Standby Ignition selector is in 1 or 2, the _______ system supplies power continuously to the related igniter regardless of Auto Ignition selector position or EEC selection

standby power system

Fuel is supplied under pressure from pumps located in the fuel tanks. The ______ add additional pressure to the fuel when _____

first and second stage engine fuel pumps the N2 rotor is turning

_______ heats the fuel as it flows through the _______ heat exchanger

Engine oil fuel/oil

The oil is cooled by _____ as it flows through the ______

fuel fuel/oil heat exchanger

An oil filter removes contaminants. If the | filter becomes saturated with contaminants, _______

oil bypasses the filter

During cruise, oil quantity displays on EICAS whenever _______

oil quantity on one engine differs from any other engine by a predetermined amount (when this occurs, the lowest oil quantity is shown in magenta)

During cruise if there is an increase in oil | quantity during cruise caused by ________ or ________ the EICAS oil partial engine indications display may appear.

indicator malfunction leaking fuel/oil heat exchanger (however, for this condition the low quantity displays in magenta, even though that oil quantity may be normal

Each thrust reverser is powered by ______ from _____

bleed air the related engine (only on the ground)

What unlocks and extends the reversers aft to the deployed position?

bleed air from the related engine

Is thrust reverse available when associated Engine Bleed Switch is OFF?

Yes HP bleed valve and PRV open for thrust reverse, unless PRV closed by: • prior or present bleed air overheat, or • start valve not closed

N 1 lines: ``` Red - Amber - Green - Magenta - White - ```

``` operating limit max limit reference target (FMC) thrust lever position ```

EGT lines: Red - Amber - Red -

takeoff/multiple engine inflight start continuous start limit (fuel control switch in cutoff)

At what speed does the A/T engage in HOLD? When does it return to THR REF?

65 kts 400 ft

APU Battery supplies power to ____ (5) MAIN Battery supplies power to ____ (3)

* Starting * Controller * DC Fuel pump * Air inlet door * Fire detection * Controller back up power * Fuel valve * Fire extinguishing

Maximum altitude for APU Bleed for one pack ____ ? Maximum altitude for APU usage ____ ?

15,000 ft 20,000 ft

7 - Engine, APU Flashcards

(82 cards)