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Call of the Heavies Ev > Overhead panel > Flashcards

Overhead panel Flashcards

1
Q

EECs

A

-EEC has two modes; normal and alternate, in Both modes, N1 is controlling.
-Powered by an alternator attached to the accessory gearbox
-Uses fuel metering unit to adjust fuel flow

EEC in normal mode:
-Thrust is limited to MAX N1
-Thrust limiting (Overboost and Overspeed protection
-keeps thrust constant regardless of changes in OAT, pressure, and bleed air demands without thrust lever movement

EEC alternate mode:
-Thrust is limited to N1 RPM limit (Overspeed protection)
- If an EEC detects a fault and automatically changes to alternate, thrust does not change
-If manual selection of alternate, thrust will increase so retarding the thrust levers before switching is required
-Manual thrust lever adjustment is required for changes in environmental conditions and bleed air demands

-All EEC’s have to be in the same mode for autothrottles to operate

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2
Q

IRS

A

Inertial Reference System
-Calculates airplane position, acceleration, track, VS, GS, True and mag heading, Wind speed/direction, Attitude

-Relays this information to all displays, FMS and other systems

-consists on three IRUs (inertial reference units)

-normally powered by AC (L C R, AC bus 3 1 2) -secondary power is from the APU HOT Battery bus (Right next door on the overhead panel)

-Full alinement (10min) (OFF then to NAV) must be completed every 18 hrs
- Fast alinement (30 secs) (align then to nav)

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3
Q

STANDBY POWER SELECTOR

A

OFF: STBY power not available and both busses are disconnected from all power sources

AUTO: allows main and APU STBY buses to be powered from available sources.

BAT: Ground Mx only. Powers STBY system through respective standby inverters

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4
Q

Primary source of AC power for the APU STBY bus? Secondary power?

A

Primary: Captains Transfer Bus
Secondary: APU STBY Inverter

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5
Q

Primary source of AC power for the MAIN STBY bus? Secondary power?

A

Primary: AC Bus 3
Secondary: MAIN STBY Inverter

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6
Q

Battery Switch

A

ON: MAIN and APU Batteries available as backup power source for their respective BATTERY BUS and STBY battery bus

OFF: Disconnects main and APU batteries from related battery busses

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7
Q

Primary source of power for the MAIN and APU HOT Battery buses? Secondary power?

A

With AC power available: Respective battery chargers
With no power available: Respective batteries

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8
Q

Primary source of power for the MAIN and APU Battery buses? Secondary power?

A

Primary: DC 3
Secondary: Respective Battery

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9
Q

Utility power switches

A

On: Each switch powers two Electrical Load Control Units (ELCUs) 4 ELCUs, 2 on each side
-4 Ulitly busses ( 2 on each side)
OFF:
-Removes power from ELCU
-Resets fault logic

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10
Q

What are some items on utility buses?
What will it shed first?

A
  1. Galley equipment
  2. Sheds only forward fuel pumps from left to right on the overhead panel (excluding OVERRIDE CTR R)
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11
Q

Will the Utility power off Light illuminate during load shedding?

A

NO

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12
Q

What does an AVIAL light mean?

A

Power quality is acceptable

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13
Q

What bus would be powered if we see an AVAIL on EXT 2 or APU 2? What are some items on that bus?

A

Main deck cargo handling bus
-Nose and side cargo doors
-main deck cargo lights
-Main deck cargo handling equipment

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14
Q

What bus would be powered if we see an AVAIL on EXT 1 or APU 1? What are some items on that bus?

A

Ground Handling Bus
-Lower Cargo Doors
-Lower Cargo handling Equipment/lights
-Fueling system
-AUX pump 4

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15
Q

What is the primary source of power for the ground service bus? Secondary?

A

Primary: AC1
Secondary: Ground Handling bus VIA ground service switch L1 door

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16
Q

BUS TIE switch

A

AUTO:
-Arms automatic AC bus tie circuitry
-closes related DC isolation relay

OFF:
-Opens related AC BTB and DC DCIR
-Resets fault logic

ISLN light (Amber)
-BTB open
-AC bus isolated from the synchronous bus

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17
Q

Generator Control switches

A

On: arms GCB (Generator control breaker) to close when power is acceptable
OFF:
-Opens field and GCB
-Isolates generator from related AC bus
-Resets fault logic

Off light illuminated: GCB open

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18
Q

Generator Drive light

A
  1. low IDG oil pressure
  2. High oil tempatrue
  3. GCB open due to uncorrectable generator frequency fault
    -Disconnects automatically for excessively high oil temp
    -Engine must be out of idle in order to disconnect
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19
Q

APU Selector

A

OFF to ON:
1. Opens APU fuel valve
2. Opens inlet door
3. Arms APU bleed air islolation valve
4. Activates DC or two AC fuel pumps

ON to Start: Initiates automatic start sequence

ON to OFF:
1. Closes APU bleed air isolation valve
2. Initiates normal shutdown (60 seconds)
3. Resets auto shutdown logic except when shutdown due to a bleed leak

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20
Q

Hydraulic system fault light

A
  1. Low hydraulic system pressure
  2. Low hydraulic reservoir quantity
  3. Excessively high fluid temp
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21
Q

PRESS light above demand pumps

A
  1. Demand pump is off or aux
  2. Demand pump commanded to operate and output pressure is low
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22
Q

Demand pump selector OFF Auto and ON

A

ON is ON
OFF is OFF
Auto: Demand pumps operate when:
1. Respective EDP pressure output is low
2. Respective Fuel control switch is in cutoff
Demand pumps 1 AND 4 operate when trailing edge flaps are in transit or in flight when flaps are extended past 1

NOTE: on the ground demand pumps 1 and 4 will shut off once trailing edge flaps are no longer in transit

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23
Q

ENGINE hydraulic pump switch

A

ON: EDP pressurizes the system when engine rotates
PRESS light: EDP pressure low

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24
Q

When will the AUX pump automatically turn off?

A

If respective engine pump pressurizes

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25
Q

What happens when you pull an engine fire switch?

A
  1. Closes engine and spar fuel valves
  2. Closes engine bleed valve
  3. Trips off related generator
  4. Depressurizes EDP
  5. Shuts off fluid to EDP
  6. Arms both fire extinguisher bottles
    Rotate fires the bottle
26
Q

When will the fire switch become unlocked?

A

Fire warning or when fuel control switch is in cutoff

Also can me manually unlocked

27
Q

When will the BTL DISCH (A or B) light illuminate?

A

Bottle has discharged or has low pressure

28
Q

What happens when you pull the APU fire Switch?

A
  1. Shuts off the APU fuel valve
  2. Closes the APU bleed valve
  3. Trips the generators and fields
  4. Closes APU inlet door
  5. Initiates an automatic shutdown
  6. Arms the bottle

Rotate to discharge

29
Q

What will happen if an APU fire is detected?

A

-APU automatically shuts down
-Will blow a bottle if on the ground

30
Q

What happens when you push the CARGO FIRE ARM MAIN Switch

A
  1. Enables main deck fire suppression
  2. Turns off two packs
  3. Configures equipment cooling to closed loop and turns off ALL airflow and heat to main deck AND lower lobes
  4. Closes mater trim air valve
31
Q

What happens when you push the CARGO FIRE ARM FWD or AFT Switch

A
  1. Arms lower lobe fire extinguishers (4)
  2. Turns off two packs
  3. configures equipment cooling to SMOKE OVERRIDE and turns off all airflow and heat into JUST the lower lobes
  4. Closes master trim air valve
32
Q

Once a fire switch has been armed, what happens if you press the DEPRESS/DISCH?

A

MAIN DECK: initiates airplane depressurization

FWD or AFT LL: initiates extinguisher discharge sequence (210min) unless you land before that time is up then all of it is fired

33
Q

Where is the APU ground control fire protection panel located and what does it do?

A

Right body gear wheel well
-Horn
-Light
-APU STOP
-Fire EXT bottle arm
-discharge switch

34
Q

What has fire detection AND protection

A

APU
Engines
Cargo compartment s
LAV

35
Q

What areas have only fire detection?

A

Crew rest (smoke detector)
Main gear wheel wells (Fire detection)

36
Q

Briefly explain the fire Detection and protection on the aircraft

A

ENG:
-2 fire bottles per wing
-Dual loop fire detector in each nacelle
-Dual loop overheat detector
-BOTH loops must detect a fire or overheat to generate a warning unless configured for single loop

Lower Lobes:
-4 fire bottles
-4 dual loop draw-through smoke detectors
-Both loops must detect a fire to generate a warning unless configured for single loop

Main deck:
-suppression is a controlled depressurization
-16 Dual loop draw-through smoke detectors
-Both loops must detect a fire to generate a warning unless configured for single loop

APU:
-1 bottle
-1 one dual loop fire detector
-only one loop needs to detect a fire to generate a warning and shuts down APU

LAV:
-smoke detector
-Heat-activated fire extinguisher in waste bin

Crew Rest:
-Smoke detectors with aural warning

37
Q

With Autostart ON what happens when you pull out a start switch?

A
  1. Opens Engine bleed valve
  2. Arms the start valve

Releases at 50% N2
-Start valve close and engine bleed air valve closes

38
Q

With Autostart OFF what happens when you pull out a start switch?

A
  1. Opens Engine bleed valve
  2. Opens the start valve

Releases at 50% N2
-Start valve close and engine bleed air valve closes

39
Q

What does the white light indicate inside the engine start switches? When does it go out?

A

White light indicates start valve open. Goes out at 50% N2

40
Q

STBY IGNITION Selector

A

NORM:
-AC power normals powers selected igniters
-IF AC power is lost then both igniters fire off of the MAIN STB Bus

1 OR 2
-Forces the number 1 or the number 2 igniters to fire from the main STBY Bus

41
Q

CON Ignition switch

A

-Selected ignitors operate continuously
-Commands approach idle

42
Q

AUTO Ignition selector

A

Both: selects all ignitors to operate when commanded
Single: Selects one ignitor. alternates between ignitors

43
Q

Autostart selector

A

On: Autostart is armed
OFF: Autostart is disabled

44
Q

Fuel Jettison selector

A

OFF: Disarms the system
A or B:
-Arms the system
-displays pre selected fuel to remain on EICAS (lower right hand corner were fuel temp usually is)

45
Q

Fuel to remain selector

A

Displays fuel to remain after jettison on EICAS

46
Q

Fuel Jettison Nozzle valve switches

A

ON:
-Jettison nozzle valve selected open
-Activates ALL Override/Jettison pumps in tanks containing fuel. Pump switches must be ON

47
Q

What indication would we get when fuel jettison reaches our fuel to remain quantity?

A

-Fuel to remain flashes white for 5 seconds
-All jettison pumps are then deactivated until the fuel jettison selector is off.

48
Q

FUEL SYSTEM

A

Review Must memorize deck

49
Q

Nacelle anti ice switches

A

ON/AUTO(when ice is detected):
-Nacelle anti icing valve opens when engine bleed air pressure is available
-EEC commanded ignitors to operate continuously
-PRV valve opens
—-UNLESS—-
PRV is closed due to:
-bleed overheat
-Start valve not closed
-HP valve failed open

50
Q

Wing anti ice switches

A

ON: Opens wing anti-ice valve
Note:
-Only operates in air with LE flaps up

51
Q

Pressurization panel

A

Pretty straight forward
-Two cabin altitude controllers. A and B normally alternates between flights.
-Manual and automatic control of each outflow valve
-Manual or automatic control of LFE
-If in Auto and FMC has no data of field elevation it defaults to 39,000 for the CRZ and 2,000 for the LFE
-MAX cabin alt is 8000’
-at 11000’ Cabin ALT the cabin altitude limiters commands both outflow valves close

52
Q

Temperature selector temperature rage?

A

Flight deck: 18-29
Upper deck and crew rest: +- 6 degrees of flight deck temperature
All cargo zones: 4-29

53
Q

Zone reset system fault light

A

-ZTC FAULT has occurred or zone duct overheat
-Master trim air valve failed closed
-Master trim air switch off
-Master trim air valve closed and pack air continues to flow (Back up mode)

54
Q

Pressing zone reset switch

A

-Resets ZTC if fault no longer exists
-Reopen Master trim air valve if overheat o longer exists
-Reopen lower lobe cargo trim air shut off valve if overheat no longer exists

55
Q

Trim air switch

A

ON:
-Master trim air valve open
-Automatic and manual selection of PTC A or B is enabled

OFF:
-Master trim air valve is closed
-Pack outlet in backup mode
-PTC A is selected (If A fails B is selected)
-Cabin temp panel in upper deck is inhibited

56
Q

Equipment cooling selector

A

STBY:
-Manually configured system for flight
-Inboard exhaust valve is open
NORM:
-Ground operation is based on ambient temp, position of LLCCFR selector and temp selected in fwd lower lobe (10C is cuttoff)
-Goes into flight mode when at least one engine is started on each wing
–If a temp of less than 10C in FWD LL then closed loop is selected
–IF LLCCFR is off then inboard exhaust valve is open allowing warm air into LL

OVRD
-EVERY VALVE CLOSES except for the Smoke/override valve
-All fans shut off
-Equipment cooling is depended on differential pressure

57
Q

Pack reset system fault light

A

Pack overheat or other system fault
(May illuminate briefly when switching PTCs)

58
Q

Pack reset switch

A

-Restarts pack after auto shutdown if fault no longer exists
-restes pacl fault protection system

59
Q

AFT Cargo heat switch

A

On: Provides warm air to after cargo compartment to prevent floor from freezing
Two valve open
-Overheat shutoff valve (Protects against overheat)
-Temp control valve(controls temp)

60
Q

AFT Cargo heat temp light

A
  1. Compartment temp excessive
    2.Overheat shut off valve closes

Call of the Heavies Ev (11 decks)

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