Overhead Panel Poster Flashcards
(1) FLIGHT DECK ACCESS LIGHTS Switch
Additional Access Lights switches are located on the overhead maintenance panel, at the right UPPER DECK crew service door, and at the Main Equipment Center Lower Hatch
Push (any switch) - when the airplane is powered by the ground handling bus, illuminates exit or entry path to or from flight deck; activates the following:
* Main Equipment Center lights
* direct ceiling light door 2
* direct ceiling lights upper deck
Second push (any switch) - extinguishes exit or entry path lighting.
(1) Ground (GND) TESTS Switch
ENABLE - allows Central Maintenance Computer to initiate ground tests of
airplane systems.
NORM (Normal - guard closed) - systems configured for flight.
The ELT activates when ARMED by high deceleration forces or when the ELT switch is ON. The ELT can be deactivated by moving the ELT switch to RESET momentarily (between 1 and 3 seconds), then ARMED
(1) LED Indicator (Amber)
Illuminates to indicate ELT has activated.
(2) ELT control switch
ON – Activates ELT
ARMED – ELT system is armed, crash situation will automatically activate ELT.
TEST/RESET – Placing the switch momentarily to TEST/RESET will reset either automatic or manual activation of the ELT system. The switch is spring loaded from the TEST/RESET position back to the ARMED position.
Fuselage mounted fixed ELT installed forward of door 5
In addition portable ELT on upper deck LAV wall
(1) Electronic (ELEC) Engine (ENG) CONTROL Switches
NORM (Normal) -
* selects normal engine control mode
* GE - electronic engine control sets thrust using N1 RPM as the controlling parameter
-Based on Thrust Lever Position (Manually or via Autothrottles)
-Constant thrust kept independent of ambient temp and psi and bleed system demands
-Thrust limited to Max N1 at full forward position
Alternate -
* selects alternate engine control mode (manual or automatically)
* Does not provide thrust limiting at maximum N1 (can be reached before full forward thrust lever)
* Thrust levers adjusted to maintain desired thrust as environmental conditions and bleed demands change
* Any EEC - Alt mode, Autothrottles Disconnect, can be reconnected after all EECs transferred to alternate mode
* Provides equal or greater thrust than normal for same thrust lever position, when EEC auto changes, no change in thrust, if manually changed thrust increases. Thrust greater than idle, move thrust lever back prior to manually selecting alternate mode to avoid exceeding N1
(2) EEC Alternate (ALTN) Lights
Illuminated (amber) - alternate engine control mode selected.
- -Selector Position
- -What Information is calculated by them
- -What uses that information
- -What information is required to align IRS
- -What is the maximum time between IRS alignment?
- -Power sources of IRUs?
(1) IRU Mode Selectors
IRU mode selector must be pulled out to move from NAV position. OFF - alignment lost.
ALIGN (alignment)- when parked and momentarily selected:
* initiates alignment
* removes sensor errors when selected from navigation mode
NAV (navigation) -
* system enters navigation mode after completing alignment
* provides IRS information to airplane systems for normal operations
ATT (attitude) -
* system enters attitude mode
* position and velocity information lost until system realigned on ground
* requires magnetic heading input from CDU
IRUs Calculate:
-Position
-Acceleration
-Track
-Vertical Speed
-Ground Speed
-True and Magnetic Heading
-Wind Speed and Direction
-Attitude data
Used by:
-Displays
-FMS
-Flight Controls
-Engine Controls
-Other Systems
-Present Position must be entered on CDU pos init page to complete alignment
-18 hours, full alignment must be completed, by selecting OFF then back to NAV, must be parked and takes approximately 10 minutes
-AC is main power source
-DC (APU Hott Batt) is backup, Center, IRU will only operate on DC for 5 minutes then shuts down
(1) Standby Power, Battery, and Utility Bus Controls
(2) APU Generators and External Power Controls
(3) AC Bus and Generator Controls
Standby Power, Battery, and Utility Bus Controls
(1) STANDBY POWER SELECTOR
STANDBY POWER Selector Push to turn.
OFF -
• standby power not available
• main and APU standby busses disconnected from all power sources
AUTO - allows main and APU standby busses to be powered from available sources.
BAT -
• powers main battery bus from main battery through the main hot battery bus with battery switch ON
• powers APU battery bus from APU battery through the APU hot battery bus with battery switch ON
• disables main and APU battery chargers
• powers main and APU standby busses from their related batteries through their hot battery busses and standby inverters with Battery switch ON
Note: BAT position for ground maintenance use only.
APU Selector
OFF -
* closes APU bleed air isolation valve
* initiates normal shutdown
* resets auto shutdown fault logic except when shutdown due to APU bleed duct leak
ON (APU operating position)
* opens APU fuel valve and inlet door
* arms APU bleed air isolation valve
Typical
activates DC or two AC fuel pumps
START (momentary position, spring-loaded to ON) -
* initiates automatic start sequence.
Standby Power, Battery, and Utility Bus Controls
(2)BATTERY Switch
(3) BATTERY Switch OFF light
(2) BATTERY Switch
ON -
*main battery available as backup power source for main battery bus and main standby bus
*APU battery available as backup power source for APU battery bus and APU standby bus
OFF - disconnects main and APU batteries from related battery busses
(3) BATTERY Switch OFF Light
Illuminated (amber) - Battery switch off
Standby Power, Battery, and Utility Bus Controls
(4) UTILITY Power Switches
(5) UTILITY Power OFF Lights
(4) UTILITY Power Switches
Freighter
ON -
• each switch powers two utility Electrical Load Control Units (ELCUs).
OFF -
• removes power from related ELCUs
• resets fault logic circuitry
(5) UTILITY Power OFF Lights
Illuminated (amber) -
• power removed from related ELCUs by fault protection logic, or
• related Utility Power switch OFF
• not illuminated during load shedding
APU Generator and External Power Controls
(1) APU Generator (APU GEN) Control Switches
(2) APU Generator Power Available (AVAIL) Lights
(3) APU Generator Power ON Lights
(1) APU Generator (APU GEN) Control Switches
Push -
• AVAIL light illuminated: connects related APU generator to AC electrical system
Freighter Note: When the main deck cargo handling bus is powered by APU generator 2, pushing APU generator 2 Control switch causes main deck cargo handling bus to lose power.
• ON light illuminated: disconnects related APU generator from AC electrical system
(2) APU Generator Power Available (AVAIL) Lights
Illuminated (white) -
• APU generator power quality acceptable
Freighter • main deck cargo handling bus powered when APU generator 2 AVAIL light illuminated • extinguishes when ON light illuminates
(3) APU Generator Power ON Lights
Illuminated (white) -
• related APU generator connected to AC electrical system
• extinguishes when AVAIL light illuminates
APU Generator and External Power Controls
(4) External Power (EXT PWR) Control Switches
(5) External Power ON Lights
(6) External Power Available (AVAIL) Lights
(4) External Power (EXT PWR) Control Switches
Push -
• AVAIL light illuminated: connects related external power to AC electrical system
Freighter Note: When the main deck cargo handling bus is powered by external power 2, pushing External Power 2 Control switch causes main deck cargo handling bus to lose power.
• ON light illuminated: disconnects related external power from AC electrical system
(5) External Power ON Lights
Illuminated (white)-
• related external power connected to AC electrical system
• extinguishes when AVAIL light illuminates
(6) External Power Available (AVAIL) Lights
Illuminated (white)-
• related external power source plugged in, power quality acceptable
• extinguishes when ON light illuminates
Freighter
• main deck cargo handling bus powered when external power 2 AVAIL light illuminated
Freighter Note: When both external power 2 and APU generator 2 AVAIL lights are illuminated, external power 2 powers the main deck cargo handling bus. Pushing the External Power 2 Control switch transfers main deck cargo handling loads to APU generator 2.
AC Bus and Generator Controls
(1) BUS TIE Switches
AUTO -
• arms automatic AC bus tie circuitry
• closes related DC isolation relay (DCIR)
OFF-
• opens BTB and related DCIR
• resets fault logic circuitry
(2) Bus Isolation (ISLN) Lights
Illuminated (amber) -
• BTB open
• AC bus isolated from synchronous bus
(3) Generator Drive Disconnet (DRIVE DISC) Switches
Push -
• disconnects IDG from engine when above idle speed
• opens related Generator Control Breaker (GCB)
Note: Ground maintenance action required to reconnect IDG.
(4) Generator DRIVE Lights
Illuminated (amber)-
• IDG oil pressure low, or
• IDG oil temperature high, or
• GCB open due to uncorrectable generator frequency fault
(5) Generator Control (GEN CONT) Switches
ON - arms GCB to close when generator power quality acceptable
Off -
• opens generator field and GCB
• resets fault control logic circuitry
• isolates generator from its related AC bus
(6) Generator OFF Lights
Illuminated (amber)- GCB open
Hydraulic Panel
(1) Hydraulic DEMAND Pump Selector
OFF - demand and auxiliary pumps off.
AUTO -
• demand pump operates when respective engine pump output pressure is low, or when respective fuel control switch is in CUTOFF
• demand pumps 1 and 4 also operate when trailing edge flaps are in transit, or in flight when flaps extended past 1
ON - demand pump operates
AUX System 4 (and 1 - if installed)
- auxiliary pump operates on ground until respective engine pump pressurizes
- respective demand pump off
(2) ENGINE Hydraulic Pump Switch
ON - engine hydraulic pump pressurizes system when engine rotates.
(3) Hydraulic System (SYS) FAULT Light
Illuminated (amber) -
• low hydraulic system pressure
• low hydraulic reservoir quantity
• excessive hydraulic fluid temperature
(4) Demand Pump Low PRESS Light
Illuminated (amber) -
• demand pump selector positioned to OFF or AUX
• demand pump commanded to operate and output pressure is low
(5) ENGINE Hydraulic Pump Low PRESS Light
Illuminated (amber) - low engine hydraulic pump pressure
(1) STORM Lights Switch
ON - overrides normal controls and illuminates the following lights at maximum
brightness:
* captain’s and first officer’s lights
* glareshield lights
* aisle stand flood lights
* dome lights
(1) Circuit Breaker/Overhead (CKT BKR OVHD) Panel Lights Control
Rotate - controls circuit breaker panel and overhead panel brightness.
(1) GLARESHIELD PANEL/FLOOD Lights Control (inner)
Rotate - controls left and right glareshield flood lights.
(2) GLARESHIELD PANEL/FLOOD Lights Control (outer)
Rotate - controls glareshield panel and standby magnetic compass lights.
(1) DOME Lights Control
controls dome light brightness
overridden by storm lights switch
(1) Flight (FLT) CONTROL Hydraulic (HYD) POWER SHUTOFF Switches
NORM (guard closed) - supplies hydraulic power for flight control surfaces.
SHUT OFF - shuts off hydraulic power to respective flight control surfaces.
(2) VALVE CLOSED Light
Illuminated (amber) - hydraulic system flight control valve is closed.
(1) APU START SOURCE
TR - Selects TR or APU battery for start (except when TR fails).
APU BATTERY - normal switch position. Selects APU battery power for APU starting. Removes TR from APU starting circuit
(1) Generator Field Manual Reset (GEN FIELD MAN RESET) Switches
Push - (spring-loaded toggle, guarded) opens or closes generator field if respective
Generator Control or APU Generator Control switch off
(2) Generator FIELD OFF Lights
Illuminated (white) - generator field open.
(3) SPLIT SYSTEM BREAKER Switch
Push - (spring-loaded toggle, guarded) opens or closes split system breaker
Note: Operative on ground only.
(4) Split System Breaker OPEN Light
Illuminated (white) - split system breaker open
Lower Lobe Cargo Conditioned Air Flow Rate Selector
OFF -
* forward and aft lower lobe cargo air conditioning off
* resets lower lobe cargo conditioned air supply duct shutoff valves if
valves closed by duct overheat
FWD LOW - two-thirds of pack three conditioned air distributed to forward lower lobe cargo compartment.
AFT LOW - two-thirds of pack two conditioned air distributed to aft lower lobe cargo compartment.
BOTH LOW - two-thirds of pack three and pack two conditioned air distributed respectively to forward and aft lower lobe cargo compartments.
FWD HIGH - all pack three conditioned air distributed to forward lower lobe cargo compartment.
AFT HIGH - all pack two conditioned air distributed to aft lower lobe cargo compartment.
(1) FIRE/Overheat (OVHT) TEST Switch
Push and hold -
* sends fire/overheat test signals to the engine, APU, wheel well, cargo, and bleed duct leak detectors
* tests flight deck fire and overheat indications (see Fire and Overheat Detection System Manual Fault Test, Section 20)
The Indications for Manual Fire and Overheat Test are:
1. Fire Bell Rings
2. APU Fire Warning Horn (ground) Sounds
3. EICAS message TEST IN PROG
4. Warning Lights Illuminate:
- Master WARNING
- engine fire warning
- APU fire warning light
- FWD and AFT cargo warning lights
- Fuel Control switch fire warning lights
Completion of test: FIRE TEST PASS or FIRE TEST FAIL replaces TEST IN PROG, switch can be released
What are the switch positions?
Where are emergency lights powered from and how long do they last?
(1) Flight Deck Emergency (EMER) LIGHTS Switch
OFF - prevents emergency lights system operation if airplane electrical power
fails or is turned off.
ARMED (guard closed) - all emergency lights illuminate if airplane DC electrical power fails or is turned off.
ON - all emergency lights illuminate.
Powered by remote batteries, charge maintained by DC Bus 4, lasts at least 15 minutes
Captain Audio System Switch
Normal (NORM) - all communication systems operate normally.
VHF-L DIRECT
- bypasses audio system by connecting Captain’s boom/mic headset and control wheel push to talk switches directly to VHF-L transceiver.
- Allows Captain to communicate on VHF-L transceiver if audio system failure causes loss of communication. Volume control is not available.
Observer Audio System Switch
Allows Captain or First Officer to use Observer’s audio control panel.
CAPT - connects Observer’s audio control panel to Captain’s:
* hand mic
* boom mic/headset
* headphone
* oxygen mask mic
* speaker
* push to talk switches
NORM - audio control panel normal operation.
F/O - connects Observer’s audio control panel to First Officer’s:
* hand mic
* boom mic/headset
* headphone
* oxygen mask mic
* speaker
* push to talk switches
Service and Cargo / Cabin Interphone Switches
(1) Service (SERV) INTERPHONE Switch
OFF – allows independent operation of service and flight interphone systems.
ON – connects service and flight interphone systems.
(2) CARGO/CABIN INTERPHONE Switch 400F, N472MC, N473MC
OFF – allows independent operation of cargo, upper deck, and flight interphone systems.
ON – connects cargo, upper deck, and flight interphone systems.
Fuel Transfer Main 1 & 4 Switch
(1) FUEL Transfer (XFER) MAIN 1 & 4 Switch
ON - main 1 and 4 transfer valves open.
OFF-
- main 1 and 4 transfer valves closed
- main 1 and 4 transfer valves open when commanded by system logic
System logic commands them open normally during jettison operation when main tanks 2 & 3 reach 9,072 kg. Gravity transfersfuel from tank 1 to 2 and tank 4 to 3.
Engine Fire Panel
(1) Engine Fire Switches
In (normal position, mechanically locked) - unlocks for a fire warning, or when
the Fuel Control switch is in CUTOFF.
Out -
* closes the related engine and spar fuel valves
* closes the related engine bleed air valve
* trips off the related engine generator
* shuts off hydraulic fluid to the related engine-driven hydraulic pump
* depressurizes the related engine-driven hydraulic pump
* arms both related engine fire extinguishers
Rotate to A or B - discharges selected fire extinguisher into the engine nacelle.
(2) Engine Fire Warning Lights
Illuminated (red) -
* an engine fire is detected, or
* the Fire/Overheat Test switch is pushed
(3) Bottle Discharged (BTL DISCH) Lights
Illuminated (amber) - the extinguisher bottle is discharged or has low pressure.
(4) Engine and APU Fire Override Switches
Push - Unlocks the fire switch
APU Fire Panel
(1) APU Fire Switch
In- normal position, mechanically locked; unlocks for a fire warning
Out-
• arms APU fire extinguisher bottle
• closes APU fuel valve
• closes APU bleed air valve
• closes APU air inlet door
trips APU generator field and generator breaker
• shuts down APU (if automatic shutdown does not occur)
Rotate - discharges APU fire extinguisher into APU compartment.
(2) APU Fire Warning Light
Illuminated (red) -
• an APU fire is detected, or
• the Fire/Overheat Test switch is pushed
APU automatically shuts down for a detected fire.
N408MC-N418MC, N-PA, N475MC-N477MC, N489MC, N492MC-N499MC
On the ground, the APU extinguisher automatically discharges.
(3) APU Bottle Discharged (BTL DISCH) Light
Illuminated (amber) - extinguisher bottle is discharged or has low pressure.
Cargo Fire Panel - Freighter
(1) CARGO FIRE ARM Switches
Push -
MAIN - ARMED -
* enables main deck fire suppression
* turns off two packs
* configures equipment cooling to closed loop and turns off all airflow to
main deck and airflow and heat into lower cargo compartments
* closes master trim air valve
* SATCOM shut down (QRH 8.21)
FWD or AFT - ARMED -
* turns off two packs
* arms lower cargo compartment fire extinguishers
* configures equipment cooling to override mode and turns off all airflow
and heat into lower cargo compartments
* closes master trim air valve
(2) CARGO FIRE Warning Light
Illuminated (red) -
* fire in related cargo compartment, or
* the Fire/Overheat Test switch is pushed
(3) CARGO FIRE Depressurization/Discharge (DEPRESS/DISCH) Switch
Push -
MAIN - ARMED - initiates airplane depressurization.
400F
FWD or AFT - ARMED - initiates extinguisher discharge sequence to provide effective agent concentration for 210 minutes.
(4) CARGO FIRE Depressurization (DEPRESS) Light
Illuminated (amber) - airplane depressurization initiated.
(5) CARGO FIRE Discharged (DISCH) Light
Illuminated (amber) - cargo fire extinguishers discharged.
2 initially, then 30 minutes later additional 2 metered out for 180 minutes (210 min total), on touchdown any remaining agent immediately discharged
Engine Start Panel - GE
(1) Engine START Switches
Pull (Autostart switch ON) -
• arms start valve
• opens engine bleed air valve
Pull (Autostart not installed or switch OFF) -
• opens start valve
• opens engine bleed air valve
Releases at 50% N2 RPM -
• start valve closes
• engine bleed air valve closes
(2) Standby (STBY) IGNITION Selector
NORM -
• AC power system supplies power to selected igniters
• standby power system supplies power continuously to all (GE) if AC power system is not powered
1 or 2 -
standby power system supplies power continuously to respective igniters.
(3) Continuous (CON) IGNITION Switch
ON -
• selected igniters operate continuously
• commands approach idle minimum
(4) AUTO IGNITION Selector
GE- SINGLE
• EEC alternates igniter 1 and igniter 2 for each ground start
• EEC selects both igniters for in-flight start or flameout
BOTH - selects all igniters.
Selected igniters operate when any of the following occur:
• during start when N2 RPM less than 50%
• trailing edge flaps out of up position
• nacelle anti-ice ON
• GE - engine flameout
(5) Engine Start Lights
Illuminated (white) - start valve is open.
(6) AUTOSTART Switch
ON -
arms the autostart system.
OFF -
• autostart system is disabled
• start is manually controlled
Fuel Jettison System
(1) FUEL TO REMAIN Selector
Rotate -
• selects fuel to remain after jettison
• displays value on EICAS
(2) Fuel Jettison NOZZLE Valve Switches
ON -
• jettison nozzle valve selected open
Freighter
• when jettison system armed, activates override/jettison pumps in tanks containing fuel (pump switches must be ON)
Off - jettison nozzle valve selected closed.
(3) Fuel Jettison Nozzle VALVE Lights
• Illuminated (amber) - jettison nozzle valve not in selected position.
(4) Fuel Jettison Selector
OFF -
• disarms jettison system
• removes EICAS fuel to remain indication
SEL (A or B) -
• arms jettison system
• displays preselected fuel to remain on EICAS
Fuel System
(1) Crossfeed (X FEED) Valve Switches 2 and 3
On (bar visible) - crossfeed valve opens when commanded by system logic.
Off (bar not visible) - crossfeed valve closes.
(2) Crossfeed VALVE Lights 2 and 3
Illuminated (amber) - crossfeed valve not in system logic commanded position.
(3) Crossfeed (X FEED) Valve Switches 1 and 4
On (bar visible) - crossfeed valve opens.
Off (bar not visible) - crossfeed valve closes.
(4) Crossfeed VALVE Lights 1 and 4
Illuminated (amber) - crossfeed valve position does not agree with switch position.
(5) Center (CTR) Wing Tank Pump Switches
ON - fuel pump selected ON.
Off (ON not visible) - fuel pump selected OFF.
(6) MAIN Pump Switches
ON - fuel pump selected ON.
Off (ON not visible) - fuel pump selected off.
(7) Fuel Pressure (PRESS) Lights
Illuminated (amber) - fuel output pressure low.
(8) Override (OVRD) Fuel Pump Switches
ON - fuel pump operates when commanded by system logic.
Off (ON not visible) - fuel pump selected off.
Nacelle and Wing Anti-Icing
(1) NACELLE ANTI-ICE Switches
OFF – the nacelle anti-icing valve is commanded closed
AUTO – in flight, nacelle anti-icing operates when nacelle icing conditions exist. The requirements for valve operation are the same as the ON position
ON
* the nacelle anti-icing valve opens when engine bleed air pressure is available
* the engine igniters selected by the Auto Ignition selector and the EEC operate continuously
* the engine bleed PRV opens when the nacelle anti-icing valve is open, unless the PRV is closed by:
* a prior or present bleed air overheat, or
* the start valve not closed, or
* the engine bleed HP valve failed open
(2) WING ANTI-ICE Switch
OFF – the wing anti-icing valves are commanded closed.
ON
* in flight, the wing anti-icing valves open to supply bleed air to the left and right wing leading edges
* on the ground, the system is off and wing ant-icing valves are closed
(3) WING ANTI-ICE VALVE Light
* Illuminated (amber) – the position of either wing anti-icing valve disagrees with the switch position.
Windshield Heat and Washers Panel
(1) WINDOW HEAT Switches
ON – supplies controlled heat to the windshield
(2) WINDOW HEAT Inoperative (INOP) Lights
Illuminated (amber) –
* The switch is off, or
* an overheat has occurred, or
* a system fault has occurred
(3) Windshield WIPER Selectors
OFF – the wiper is off and is sequenced to stowed position
LO-Wiper operates at low speed
HI- Wiper operates at high speed
(4) WINDSHIELD L, R WASHER Switches
Spring loaded to neutral
ON – applies washer fluid
(1) AISLE STAND PANEL/FLOOD Lights Control (inner)
Rotate - controls aisle stand flood lights brightness.
(2) AISLE STAND PANEL/FLOOD Lights Control (outer)
Rotate -
* controls aisle stand panel lights brightness
* overridden by storm lights switch
Landing Light Switches
(1) Outboard (OUTBD) and Inboard (INBD) LANDING Light Switches
ON (L or R)-
• illuminates respective wing landing light
• light intensity at maximum when Landing Gear lever in DOWN position
Runway (RWY) TURNOFF Light Switches
ON (L or R) -
• illuminates respective runway turnoff light
• lights extinguish when air/ground sensing system in air mode
Taxi Light
TAXI Lights Switch
ON-
*illuminates two taxi lights on nose landing gear
*lights extinguish when air/ground sensing system in air mode
Cockpit Voice Recorder System
(1) STATUS Light
Illuminated (green) – test completed successfully. Extinguished after one second.
(2) ERASE Switch
Push and hold for three seconds - erases voice recorder if:
1. on the ground
2. AC power on,
3.parking brake set.
(3) TEST Switch
Push and hold for five seconds – tests all four cockpit voice recorder channels (1per second).
(4) Headset Jack
Headset can be plugged in to monitor playback of voice audio, or to monitor tone transmission during test.
Inertial Reference System (IRS) On Battery Light
(1) IRS ON Battery (BAT) Light
Illuminated (white) - IRS operating on backup electrical power (APU hot battery
bus).
Electronic Engine Control (EEC) Maintenance Panel
(1) EEC Maintenance (MAINT) POWER Switches
Normal (NORM) - supplies electrical power for normal EEC operation.
TEST - supplies electrical power for EEC maintenance testing when engine not running.
Defuel Panel
(1) Reserve (RSV) 2 & 3 Transfer (XFER) Switch
CLOSE -
• reserve 2 and 3 transfer valves closed
• reserve 2 and 3 transfer valves open when commanded by system logic
OPEN - reserve 2 and 3 transfer valves open.
Main Deck Signaling Switch
Push-
Phase 1 installation
-flashes main deck ceiling lights for several seconds
Alerts supernumerary personnel on main deck to return to seats in event of fire, smoke, depressurization or turbulence
Supernumary Oxygen Switch
(1) PASSENGER/ Supernumerary OXYGEN Switch
RESET (spring-loaded) - flow control units closed electrically when cabin altitude
below 12,000 feet.
NORM (guard closed) - system activates if cabin altitude reaches approximately 14,000 feet.
ON (spring-loaded) - cabin oxygen masks drop.
Yaw Damper Controls
(1) YAW DAMPER Switches
ON - yaw damper powered.
(2) Yaw Damper Inoperative (INOP) Light
Illuminated -
* Yaw Damper switch off, or
* yaw damper inoperative
Upper- Hydraulic System 3
Lower Hydraulic System 2
Pressurization System Cabin Altitude Control
(1) Landing Altitude (LDG ALT) Switch
Push - alternately changes landing altitude control between Automatic and
Manual.
Manual:
• landing altitude set by rotating Landing Altitude selector
• landing altitude followed by MAN displayed on primary EICAS
• the EICAS advisory message LANDING ALTITUDE is displayed
Automatic:
• landing altitude set automatically from FMC
• Refer to Chapter 11, Flight Management Navigation, Approach
• landing altitude followed by AUTO displayed on primary EICAS
(2) Landing Altitude (LDG ALT) Selector
Rotate - sets landing altitude when MAN displayed on primary EICAS.
(3) Outflow Valve Manual (MAN) Switches
* ON-*
• outflow valve is controlled manually
• bypasses automatic outflow valve control and cabin altitude limiter
OFF
• outflow valve controlled automatically
(4) OUTFLOW VALVES Position Indicator
OP (Open) - outflow valve open.
CL (Closed) - outflow valve closed.
(5) Cabin Altitude AUTO Selector (SELECT)
NORM -
• cabin altitude controller A or B selected automatically on alternate flights
• selected controller is the primary controller; selects secondary controller if primary controller fails
A - selects cabin altitude controller A as primary controller; selects B if A fails.
B - selects cabin altitude controller B as primary controller; selects A if B fails.
(6) Outflow Valves Manual Control
OPEN -moves the outflow valve toward open.
CLOSE - moves the outflow valve toward closed.
ECS Panel - Overhead - FLT DECK - FAN
- With All Packs Off: Recirculated Cabin Air Supplied to Flight Deck
- With At Least One Pack On: Fan Increases Flow of Conditioned Air Supplied to FLight Deck
Disabled in Flight
ECS Panel - Overhead - FLT DECK - TEMP
Auto:
1) Provides automatic control of flight deck temperature (65-85F)
2) In backup mode, rance C to W, average flight deck temp (65-85F), cabin control zone temp inhibited, automatic control of main deck zone temp inhibited
Man:
1)Manually Controls Flight Deck Trim Air Valve (C cooler, W warmer)
MAIN DECK Temperature (TEMP) Selectors
1 MAIN DECK Temperature (TEMP) Selectors
AUTO -
- provides automatic control of main deck conditioned air temperature
- range C to W sets temperature from 40°F (4°C) to 85°F (29°C)
- in backup mode, automatic control of main deck temperature is inhibited
MAN (spring loaded to 6 o’clock position) -
- main deck trim air valve controlled manually
- C (cool) - valve moves toward closed to provide cooler air.
- W (warm) - valve moves toward open to provide warmer air.
Forward (FWD) LOWER LOBE Temperature (TEMP) Selector
2 Forward (FWD) LOWER LOBE Temperature (TEMP) Selector
AUTO -
- Provides automatic control of forward lower lobe cargo conditioned air temperature when Lower Lobe Cargo Conditioned Air Flow Rate selector in FWD HIGH, BOTH LOW, or FWD LOW
- Range C to W sets temperature from 40°F (4°C) to 85°F (29°C)
MAN (spring loaded to 6 o’clock position) -
- Forward lower lobe cargo trim air valve controlled manually when Lower Lobe Cargo Conditioned Air Flow Rate selector in FWD HIGH, BOTH LOW, or FWD LOW
- Resets forward lower lobe cargo conditioned air supply duct shutoff valve if valve closed by duct overheat
C (cool) - valve moves toward closed to provide cooler air.
W (warm) - valve moves toward open to provide warmer air.
AFT LOWER LOBE Temperature (TEMP) Selector
(3) AFT LOWER LOBE Temperature (TEMP) Selector
AUTO -
• provides automatic control of aft lower lobe cargo conditioned air temperature when Lower Lobe Cargo Conditioned Air Flow Rate selector in AFT HIGH, BOTH LOW, or AFT LOW
• range C to W sets temperature from 40°F (4°C) to 85°F (29°C)
MAN (spring loaded to 6 o’clock position) -
• aft lower lobe cargo trim air valve controlled manually when Lower Lobe Cargo Conditioned Air Flow Rate selector in AFT HIGH, BOTH LOW, or AFT LOW
• resets aft lower lobe cargo conditioned air supply duct shutoff valve if valve closed by duct overheat
C (cool) - valve moves toward closed to provide cooler air.
W (warm) - valve moves toward open to provide warmer air.
Zone Reset Switch and Zone System Fault Light
ZONE Reset (RST) Switch
Push:
1)Resets Zone Temp Controller if Fault No Longer Exists
2)Re Opens Master Trim Air Valve if Duct Overheat no Longer Exists
3)Reopens forward or aft lower lobe cargo trim air shut off valve if duct overheat no longer exists
Zone SYSTEM (SYS) FAULT Light
Illuminated (amber):
1)Temp Zone Duct Overheat or Zone Temp Controller Fault
2)Master Trim Air Valve Failed Closed
3)Trim Air Switch Off
4)Master Trim Air Valve Closed and Pack Air Continues to Flow
TRIM AIR Switch
ON:
- Automatic and manual selection of pack controller A or controller B enabled
- Master trim air valve open and flight deck, upper deck, (400F - crew rest), and main deck zone trim air valves operate automatically
OFF:
- Master trim air valve closed
- Pack output temperature in backup mode regulated to provide average flight deck temperature from 65°F (18°C) to 85°F (29°C) as selected by Flight Deck Temperature selector in AUTO
- Cabin temperature panel control of (400F - crew rest) and upper deck zone temperatures inhibited
- Pack controller A selected and both automatic and manual selection of pack controller B inhibited
• if pack controller A failed, pack controller B selected automatically
Equipment Cooling Selector - STBY
STBY -
• ground exhaust valve closed
• automatic control bypassed to configure system for flight; inboard exhaust valve open
• with a single internal fault, equipment inboard exhaust valve closes and cooling system reconfigures to allow internal closed loop recirculation of cooling air
Equipment Cooling Selector - NORM
- ground operation based on ambient temperature, position of Lower Lobe Cargo Conditioned Air Flow Rate selector, and temperature selected by the Forward Lower Lobe Cargo Temperature selector; equipment cooling air exhausted overboard, or exhausted into forward cargo compartment
- with two or more engines running, Lower Lobe Cargo Conditioned Air Flow Rate selector in a FWD selection (FWD HIGH, LOW or Both LOW) with a temperature of 10C or higher selected, or ANY other position of the LLCAFR switch (OFF, AFT High or LOW); cooling air exhausted into forward cargo compartment and ground exhaust valve closed
- with two or more engines running, Lower Lobe Cargo Conditioned Air Flow Rate selector in FWD LOW, BOTH LOW, or FWD HIGH and forward lower lobe cargo temperature selected LESS than 50°F (10°C), inboard exhaust valve closed and equipment cooling air recirculated in a closed loop mode
- with a single internal fault, equipment inboard exhaust valve closes and cooling system reconfigures to allow internal closed loop recirculation of cooling air
Equipment Cooling Selector - OVRD
• inboard exhaust valve closed
• ground exhaust valve closed
• equipment supply valve closed; cooling air supplied through flight
panels
• smoke/override valve open; differential pressure exhausts cooling air overboard
Situations:
- OVRD selected
- Inflight both internal fans failed
- FWD or AFT Cargo Fire Arm switch armed
Pack High Flow Switch
ON:
-all operating packs configured to high flow
- EICAS memo message PACKS HIGH FLOW displays
OFF:
Off (Lower Lobe Cargo Conditioned Air Flow Rate selector in HIGH or BOTH LOW)
- no effect on pack flow rates. All packs remain in high flow.
Off (Lower Lobe Cargo Conditioned Air Flow Rate selector in FWD LOW)
- packs one and two controlled automatically. Pack three remains in high flow.
Off (Lower Lobe Cargo Conditioned Air Flow Rate selector in AFT LOW)
- packs one and three controlled automatically. Pack two remains in high flow.
Off (Lower Lobe Cargo Conditioned Air Flow Rate selector in OFF)
- pack air flow controlled automatically.
AFT CARGO Heat (HT) Switch
Aft Cargo Temperature (TEMP) Light
ON:
- overheat shutoff valve opens to provide bleed air heat to aft and bulk cargo compartments
- temperature control valve closes and opens to maintain temperature
- overheat shutoff valve closes and opens for overheat protection
OFF
- shuts off aft cargo heat bleed air to compartment.
(TEMP) Light Illuminated (Amber)
• compartment temperature excessive
• overheat shutoff valve closes
Pack Control
(1) PACK Reset (RST) Switch - Push
- resets pack fault protection system
- restarts pack after automatic shutdown if fault no longer exists
(2) Pack System (SYS FAULT) Light
Illuminated (amber)
- pack overheat or other system fault has occurred
- 400F: may illuminate briefly when automatically or manually switching from pack temperature controller A to B or B to A
(3) PACKS Controller Selectors
OFF -
• pack valve closed
• extinguishes Pack System Fault light for pack selected off
• resets pack fault protection system
Normal (NORM) -
• pack controller A or B selected automatically on alternate flights
• selected controller is primary controller; selects secondary controller if
primary controller fails
A - selects pack controller A as primary controller; selects B if A fails.
B - selects pack controller B as primary controller; selects A if B fails.
Bleed Air Control
(1) Isolation (ISLN) VALVE Lights
- Illuminated (amber) - isolation valve position disagrees with switch position
(2) Isolation (ISLN) Valve Switches
ON (bar in view) - valve open.
Off - valve closed.
(3) APU Bleed Air Switch
ON - valve commanded open when EICAS memo message APU RUNNING
displayed.
Off - valve closed
(4) Engine Bleed Air System (SYS) FAULT Lights
Illuminated (amber) -
• bleed air overheat, or
• bleed air overpressure, or
• HP bleed valve open when commanded closed, or
• PRV open when commanded closed
(5) ENGINE BLEED Air Switches
ON-
• engine bleed air valve opens for engine start
• engine bleed air valve, PRV, and HP bleed valve open by system logic when bleed air pressure available
OFF-
•engine bleed air valve, PRV, and HP bleed valve closed
• PRV opens when nacelle anti-ice on, unless PRV closed by:
• prior or present bleed air overheat, or
• start valve not closed, or
• HP bleed valve failed open
GE
• HP bleed valve and PRV open for thrust reverse, unless PRV closed by:
• prior or present bleed air overheat, or
• start valve not closed
(6) ENGINE BLEED Air OFF Lights
Illuminated (amber) - engine bleed air valve closed.
APU Bleed Air VALVE Light
Illuminated (amber) - APU bleed air isolation valve position disagrees with switch
position.
Beacon, Navigation, Strobe, Wing and Logo Lights Switches
(1) Navigation (NAV) Lights Switch
ON - illuminates red, green and white navigation lights.
(2) BEACON Lights Switch
Lower (LWR) - activates lower red anti-collision beacon light.
BOTH - activates upper and lower red anti-collision beacon lights.
(3) STROBE Lights Switch
ON - activates strobe lights.
(4) WING Lights Switch
ON - illuminates wing leading edge illumination lights.
(5) LOGO Lights Switch
ON - illuminates logo lights.
Indicator Lights Switch
(1) Indicator Lights (IND LTS) Switch
TEST (spring-loaded) - illuminates all annunciator lights to full brightness for 10 seconds to check the bulbs, then dims the lights as long as switch is held.
BRT - sets all illuminated annunciator lights to full brightness.
DIM - sets all illuminated annunciator lights to low brightness.
