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AFT LIGHTING BUS

BUS B
APU ESSENTIAL DC
- PRIMARY: MEDC
- ALTERNATE: GOB
ESSENTIAL DC FEEDERS (SAM)

MEDC
28V FORWARD LIGHTING BUS

MEAC
INSTRUMENT BUS #1 & #2

MEAC
NO NAME BUS
- PRIMARY: MEAC
- ALTERNATE: FEAC
SEAC
- PRIMARY: MEAC
- ALTERNATE: SEDC (VIA INVERTER)
SEDC
- PRIMARY: MEDC
- ALTERNATE: FEDC (VIA INVERTER RELAY)
GENERATOR #4 CONTROL AUX RELAY

MEDC (GEN 4 TRANS CB)
GROUND OPERATION BUS RELAY

FEDC
INVERTER

SEDC
INVERTER POWER RELAY

FEDC
POWER SENSING RELAY

MEDC
TRANSFER RELAY #2A

#2 PMG
TRANSFER RELAY #2B

MEDC (BUS A CONTROL CB)
TRANSFER RELAY #3A

#3 PMG
TRANSFER RELAY #3B

MEDC (BUS B CONTROL CB)
TRANSFER RELAY #4

GOB (EXT PWR CONTROL CB)
TRANSFER RELAY #5

MEDC (GEN 4 TRANS CB)
TRANSFER RELAY #6

MEDC (GEN 4 TRANS CB)
TRANSFER RELAY #7

FEDC (GEN 4 AUX CONTROL CB)
TRANSFORMER RECTIFIER #1

BUS A
TRANSFORMER RECTIFIER #2

BUS B
TRANSFORMER RECTIFIER #3

MEAC
APU ESSENTIAL BUS FEEDER CB

MEDC
BUS A CONTROL CB

MEDC
BUS B CONTROL CB

MEDC
EXTERNAL POWER CONTROL CB

GOB
GEN #4 AUX CONTROL CB

FEDC
GEN #4 TRANSFER CONTROL CB

MEDC
GROUND BUS RELAY CB

FEDC
INVERTER POWER CB

FEDC
INVERTER RELAY CB

FEDC
POWER SENSING CB

MEDC
FULL LOAD MONITORING

GOB
GENERATOR MECHANICAL FAILURE LIGHTS

MEDC
LOAD MONITORING RELAYS

MDC
APU GEN OFF LIGHT

GOB
BUS A MONITORING SWITCH

PMG, MEDC
BUS B MONITORING SWITCH

PMG, MEDC
ESS BUS MONITORING SWITCH

BUS A
EXT POWER SWITCH

GOB
EXT POWER AVAILABLE LIGHT

POWER CART
GEN 2 OFF LIGHT

MEDC
GEN 3 OFF LIGHT

MEDC
GEN 4 OFF LIGHT

MEDC
INVERTER & BATTERY TEST SWITCH

FEDC
TR 1 OVERHEAT LIGHT

MEDC
TR 2 OVERHEAT LIGHT

MEDC
TR 3 OVERHEAT LIGHT

MEDC
AFT TRANSFER PUMP
- PRIMARY: BUS B
- CONTROL: EMDC
FORWARD TRANSFER PUMP
- PRIMARY: BUS A
- CONTROL: EMDC
CROSSFEED VALVES

MEAC
DUMP PUMP
- PRIMARY: BUS A
- CONTROL: MDC
DUMP VALVE

MDC
FUEL BOOST PUMPS
- 1 & 3
- PRIMARY: BUS A
- CONTROL: EMDC
- 2 & 4
- PRIMARY: BUS B
- CONTROL: EMDC
MAIN TANK VALVES

MEAC
FUEL TRANSFER VALVES

MDC
FUEL CROSSFEED PRESSURE INDICATOR

INST BUS #2
FUEL GAUGE TEST SWITCH

EMDC
FUEL TRANSFER CONTROL SWITCH

EMDC
FUEL QUANTITY GAUGES
- FLIGHT STATION: MEAC
- REFUELING PANEL: BUS A
FUEL TOTALIZER

MEAC
FUEL FILTER LIGHTS

MEDC
FUEL PRESS LOW LIGHTS

MEDC
EMERGENCY SHUTDOWN RELAYS (WIPER SWITCHES)

MEDC
FIRE DETECTOR UNITS

MEDC
HRD DISCHARGE BUTTONS
- PRIMARY: MEDC
- ALTERNATE: EMDC
FUEL & IGNITION SWITCHES

SEDC
START VALVE

SEDC
START BUTTON

SEDC
START SELECTOR

SEDC
PRIMER CONTROL BUTTON

SEDC
STARTER CONTROL VALVE OPEN LIGHTS

MEDC
PARALLEL LIGHTS

MEDC
ENGINE OIL TEMPERATURE INDICATORS

EMDC
OIL COOLER FLAP POSITION INDICATORS
- 1 & 4
- INST BUS #1
- 2 & 3
- INST BUS #2
OIL QUANTITY INDICATORS

EMDC, GOB (GROUND CHECK)
POWER SECTION OIL PRESSURE INDICATORS
- 1 & 4
- INST BUS #1
- 2 & 3
- INST BUS #2
RGB OIL PRESSURE INDICATORS
- 1 & 4
- INST BUS #1
- 2 & 3
- INST BUS #2
FIRE DETECTOR SWITCHES

MEDC
PROP CHECK SWITCHES
- PRIMARY: BUS A
- CONTROL: EMDC
OIL COOLER FLAP CONTROL SWITCHES

MEAC
TD SWITCHES
- PRIMARY: MEAC
- CONTROL: SEDC
APU TEST SWITCH

APU ESS
AIR START CONTROL RELAY
- 1 & 4
- MEDC
- 2 & 3
- EMDC
AUTOFEATHER SYSTEM

EMDC
BETA LIGHT

MEDC
FEATHER VALVE SOLENOID
- 1 & 4
- MEDC
- 2 & 3
- EMDC
FLIGHT IDLE STOP RELAY

MEDC
FLIGHT IDLE STOP SOLENOIDS

MEDC
PITCHLOCK RESET

FEDC
PROP FEATHER PUMP RELAYS
- 1 & 4
- MEDC
- 2 & 3
- EMDC
PROP FEATHER PUMPS
- 1 & 4
- PRIMARY: BUS B (ALT BUS A)
- CONTROL: MEDC
- 2 & 3
- PRIMARY: BUS A
- CONTROL: EMDC
NTS FEATHER VALVE CHECK SWITCH
- NTS CHECK: EMDC
- FX VALVE CHECK: MEDC
HYDRAULIC SYSTEM 1 PRESSURE INDICATOR

INST BUS #1
HYRDAULIC SYSTEM 2 PRESSURE INDICATOR

INST BUS #2
HYDRAULIC PUMP 1A
- PRIMARY: BUS B
- CONTROL: MEDC
HYDRAULIC PUMP 1
- PRIMARY: BUS A
- CONTROL: EMDC
HYDRAULIC PUMP 2
- PRIMARY: BUS B
- CONTROL: EMDC
HYDRAULIC PUMP 1B

GOB
HYDRAULIC SYSTEM QUANTITY INDICATOR

EMDC
#2 EDC INLET & DISCHARGE PRESSURIZATION INDICATOR

INST BUS #1
#3 EDC INLET & DISCHARGE PRESSURIZATION INDICATOR

INST BUS #2
A, B, C VALVES

MEAC
AIR MULTIPLIER VALVE

MEDC
APU AIR OVERRIDE SWITCH

MEDC, GOB
APU LOAD & SHUTOFF VALVE

GOB
AUX VENT VALVE
- PRIMARY: MEAC
- CONTROL: MEDC
CABIN EXHAUST FAN
- PRIMARY: BUS B
- CONTROL: EMDC
EDC DISCONNECT SOLENOIDS

MEDC
EDC DUMP SOLENOIDS

MEDC
HEAT EXCHANGER FANS
- PRIMARY: BUS B
- CONTROL: MEDC
OUTFLOW VALVE

FEAC
PRESSURIZATION GROUND CHECK SWITCH

MEAC, FEAC
TEMPERATURE CONTROLLERS

MEAC
TEMPERATURE SELECTOR & INDICATOR

MEAC
GROUND AC SWITCH

MEDC, SEDC (HOLDS)
PITOT HEAT
- PILOT: FEAC
- COPILOT: 28V FLB
LEADING EDGE TEMPERATURE GAUGE

MEAC
SIDE WINDSHIELD HEAT
- PRIMARY: BUS A
- CONTROL: EMDC
WING DEICE MOD VALVES

EMDC
AOA HEAT

MEDC
EMP DEICE
- CONTROL: EMDC
- CYCLING STRIPS: BUS B
- PARTING STRIPS: BUS A
- TIMER MOTOR: MEAC
- MONITOR: MDC
ENGINE ANTI ICE VALVE SOLENOIDS

MEDC
FRONT WINDSHIELD HEAT
- PRIMARY: MEAC
- CONTROL: MEDC
ICE DETECTOR
- HEAT: MEAC
- DETECTION: MEDC
PROP DEICE
- PRIMARY: BUS B
- CONTROL: EMDC
APU CONTROL SWITCH

GOB
APU EXHAUST GAS INDICATOR

THERMOCOUPLE
APU INFLIGHT ARM SWITCH

GOB
APU RPM INDICATOR

APU TACH GEN
APU LIGHTS TEST SWITCH

APU ESS
APU DOORS LIGHT

APU ESS
COMMAND BELL

FEDC
LANDING LIGHTS

MEAC
STROBE LIGHTS
- PRIMARY: BUS B
- CONTROL: EMDC
TAXI LIGHTS

28V FLB
WHEEL WELL LIGHTS

28V FLB
WINDSHIELD WIPER

MEAC
WING AND TAIL LIGHTS (NAVIGATION LIGHTS)

28V FLB
ANNUNCIATOR TEST & DIM SWITCHES

MEDC
APPROACH INDEX LIGHTS

MEDC
CENTER INSTRUMENT LIGHTS

MEAC
CENTER INSTRUMENT RED FLOOD LIGHTS

MEAC
COMPASS LIGHT

MEDC
DOME LIGHTS

28V FLB
FUEL DUMP
- PRIMARY: BUS A
- CONTROL: MDC
VALVE: MDC
HSI MODE LIGHTS

MEAC
INSTRUMENT LIGHTS

MEAC, FEAC (BACKUP)
SIDE CONSOLE LIGHTS

MEDC
INSTRUMENT RED FLOOD LIGHTS

MEAC
SIGHT LIGHT

28V FLB
WHITE FLOOD LIGHTS

MEAC
PEDESTAL LIGHTS

MEAC
CIRCUIT BREAKER LIGHTS

28V FLB
FE READING LIGHT

28V FLB
OVERHEAD INSTRUMENT LIGHTS

MEAC
OVERHEAD LIGHTS PANEL

MEAC
STEP LIGHTS

BUS A
AUTOPILOT (ASW-31)
- PRIMARY: BUS A
- CONTROL: MDC
AOA INDEX LIGHTS

MEDC
AOA INDICATOR

MEDC
BARO ALTIMETER
- MODE C: MEAC
- ALT VIB: MEDC
FDI

MEAC (FEAC BACKUP)
LANDING GEAR HANDLE LIGHTS

EMDC
LANDING GEAR POSITION INDICATOR

EMDC
MARKER BEACON LIGHTS

MDC
RADAR ALTIMETER

FEAC
STANDBY ATTITUDE INDICATOR (PEANUT GYRO)
- NON EFDS: FEAC
- EFDS: MEDC, FEDC (BACKUP WITH ESS BUS MON SWITCH OFF)
TURN NEEDLE

MEDC, FEDC (BACKUP WITH ESS BUS MON SWITCH OFF)
FLAP POSITION INDICATOR

INST BUS #1
OUTSIDE AIR INDICATOR

EMDC
THREE AXIS TRIM INDICATOR

AUTOPILOT TRIM SERVO-MOTOR
VERTICAL ANNUNCIATOR PANEL LIGHTS

MEDC
SHP GAUGES

MEAC
TIT GAUGES

SEAC
RPM GAUGES

TACH GENERATOR
FUEL FLOW GAUGES

BUS A
TIT OVERTEMP TEST SWITCH

SEAC
CAL A/B SWITCH

MEAC
HYD BRAKE PRESSURE GAUGE

INST BUS #1
AIR PRESSURE GAUGE

INST BUS #2
DUCT LOOP TEST SWITCH

EMDC
ANNUNCIATOR MASTER RESET SWITCH

MEDC
TACTICAL DISPLAY

EMDC
FUS BLEED AIR SHUTOFF SWITCHES

SEDC
BLEED AIR PANEL ANNUNCIATOR LIGHTS

MEDC
BLEED AIR MANIFOLD PRESSURE INDICATOR

INST BUS #1
RAWS

MEAC, MEDC (TEST)
RUDDER BOOST SHUT OFF VALVE

MEDC
LANDING GEAR SELECTOR VALVE (CONTROL VALVE CB)

EMDC
WHEELS LIGHT

MEDC
BOMB BAY CONTROL

EMDC
WING FLAP ASSYM

MDC
LOW RPM SOLENOID

EMDC
TD
- PRIMARY: MEAC
- CONTROL: SEDC
IGNITORS

SEDC (FUEL SHUTOFF VALVE CB)
PARALLEL VALVE

SEDC (FUEL SHUTOFF VALVE CB)
FUEL SHUTOFF VALVE

SEDC
SYNCHROPHASER
- PRIMARY: BUS A
- CONTROL: EMDC
OIL TANK SHUTOFF VALVE

MEDC
ENGINE/FUSELAGE BLEED AIR SHUTOFF VALVE

SEDC
FUEL/IGNITION CONTROL

SEDC
ENGINE ANTI ICE VALVES

MEDC
VHF (ARC-101)
- PRIMARY: MEAC
- CONTROL: MEDC
VHF (ARC-197/182)

MEDC
VOR (ARC-101)
- PRIMARY: MEAC
- CONTROL: MEDC
VOR (ARC-140)

MEDC
UHF-1
- PRIMARY: MEAC
- CONTROL: MEDC
UHF-2
- PRIMARY: BUS A
- CONTROL: MDC
HF-1
- PRIMARY: MEAC
- CONTROL: MEDC
HF-2
- PRIMARY: BUS A
- CONTROL: MDC
INS-1
- PRIMARY: MEAC
- CONTROL: MEDC
INS-2
- PRIMARY: BUS A
- CONTROL: MDC
TACAN
- PRIMARY: MEAC
- CONTROL: MEDC
ADF

MDC
VERTICAL GYRO

MEAC, FEAC (BACKUP)
APU GEN CONTROL

GOB
APU STARTER MOTOR

EMDC, FEDC
APU FIRE DETECTION

APU ESS
APU DOORS ACTUATOR

APU ESS
APU LOAD/SHUTOFF VALVE

GOB
APU BLEED AIR START VALVE

GOB
APU FIRE EXT (MAN/AUTO)

APU ESS
APU DOORS POS LIGHT

APU ESS
APU FUEL VALVE

GOB
APU FUEL IGNITION

GOB
APU START CONTROL

GOB
APU PANEL LIGHTS

GOB
LADDER
- PRIMARY: BUS A
- CONTROL: MDC
AOA HEAT

MEDC

Author

P3ORION

87969

Card Set

P3 Power Sources

Description

P3 Power Sources

Updated

2011-06-28T01:45:40Z