Electrical and Fire Protection Flashcards
AC BUS 1 has just failed. Will the AC ESS BUS
remain powered?
▪ Which bus supplies the AC ESS BUS in this
condition?
YES
AC BUS 2 will power the AC ESS BUS
What does the AC ESS FEED FAULT light
represent?
AC ESS BUS “FEED FAULT” light
means AC ESS BUS is not being
powered
What does a FAULT light in an IDG pb represent?
H-O-T-L-O-P
High Oil Temperature
Or
Low Oil Pressure
Refer to panel below: The aircraft is parked at
the gate following a single engine taxi. What
electrical source is supplying AC BUS 1 and AC
BUS 2?
ANSWER: AC BUS 1= GEN 1; AC BUS 2 = EXT
PWR
GEN 1 (Red Circle) Has No Faults indicating respective
IDG operational (Eng #1 running) & powering AC BUS 1.
GEN 2 (Yellow Circle) Fault light lit, Generator is deenergized
due engine 2 not running.
EXT PWR (Blue Circle) Cyan light ON, powers AC BUS 2
per electrical priority.
What automatically occurs if you have an APU
fire while on the ground?
Automatic Shutdown and Automatic Extinguisher activation
(on ground only)
For an Engine Fire system test, what indications
are we looking for in the cockpit?
(Hint: F-E-E-D S-A-M)
F-E-E-D S-A-M
- FIRE light on ENG panel (pedestal) illuminates RED
- ENG FIRE1 (2) warning appears on ECAM
- ENG FIRE pb illuminated RED
- DISCH lights illuminate AMBER.
- SQUIB Lights illuminate white
- A continuous repetitive chime sounds.
- MASTER WARN lights flash
What does the amber DISCH 1 light represent?
Bottle 1 has low pressure
What occurs when the RACK POWER is selected OFF?
Power is removed from the AFT avionics rack
If AC BUS 1 fails, will the AC ESS BUS
remain powered?
(151)
Yes
If AC BUS 1 fails, which bus supplies
the AC ESS BUS?
(153)
AC BUS 2
What is indicated by a FAULT light in the
GEN pb?
(155)
The associated generator control unit (GCU) trips, or
The line contactor opens (except if GEN pushbutton is selected OFF)
157
What does a BAT OFF
light represent?
- Battery charger limiter is not operating
- OFF light illuminates if the DC BATT BUS is powered
- Hot buses remain powered
What does the green EXT PWR AVAIL
light indicate?
(159)
External power is connected to the airplane and is good.
(Extinguishes if ON is illuminated or if the external power is disconnected.)
What does the blue EXT PWR ON light indicate?
(161)
External power is connected (supplying power) to the electric system
What does the battery charger limiter automatically control?
(163)
(When the BAT 1&2 are selected on)
Connection and the disconnection of the corresponding battery to the DC BAT BUS (by closing and opening of the battery line contactor).
What does a BAT FAULT light represent?
(165)
Comes on amber, accompanied by an ECAM caution, when the charging current for the corresponding battery is outside limits. In this case the battery contactor opens
What does the AC ESS FEED FAULT light represent?
(167)
AC ESS BUS is not powered
What does a light in IDG 2 pbrepresent?
(169)
High oil temperature / Low oil pressure
During a One-Engine Taxi:
Which GEN is powering AC BUS 1?
AC BUS 2?
(171)
GEN 1
APU (via BUS TIE)
Refer to panel below: The aircraft is parked at the gate following a single engine taxi. What electrical source(s) are supplying AC BUS 1 and AC BUS 2?
(173)
GEN 1 powers AC BUS 1
EXT PWR powers AC BUS 2
What does the smoke light in the GEN 1 LINE pbindicate?
(175)
Smoke is detected in the avionics ventilation duct
What occurs when the GEN 1 LINE pbis selected OFF?
(177)
GEN 1 line contactor opens,
AC BUS 1 channel supplied from GEN 2 through the bus tie contactors,
Separate circuit is energized from GEN 1 to supply power to one fuel pump in each main tank.
What is indicated by a
RAT & EMER GEN FAULT light?
(179)
EMERG GEN is not supplying power when AC BUS 1 & AC BUS 2 are not powered
With the RAT MAN ON switch in AUTO,
what will cause the RAT to deploy?
(181)
AC BUS 1 & 2 not supplied, AC Speed greater than 100 KTS
What will happen if you press the RED guarded
MAN ON pushbutton?
(183)
Manual RAT extension –Even on the ground
Which hydraulic system is pressurized
by deployment of the RAT?
(185)
Blue
187
How long does it take for the EMER GEN
to couple after RAT deployment?
About 8 seconds
What automatically occurs if you have an APU fire
while on the ground?
(189)
Automatic Shutdown and Automatic Extinguisher activation
What does illumination of the FAULT light
in the APU Master switch indicate?
(191)
APU Auto shutdown has occurred
What does the green AVAIL light in the
APU START pb indicate?
(193)
The APU start sequence is complete and the APU generator is available for use
What does the cyan ON light indicate after the APU START p/b has been pressed?
(195)
The APU starter is energized
Does this represent a successful ENG FIRE test?
(197)
NO -The white SQUIB lights are not illuminated
What does the white SQUIB light indicate?
(199)
Illuminates white to indicate that the respective fire extinguishing system is armed
What does the DISCH 1 light represent?
(203)
Bottle 1 has low pressure
When you discharge Agent 2, what indication would you expect to immediatelysee on the Cargo Smoke Panel?
(205)
DISCH AGENT 2 light extinguishes when Squib 2 is ignited
When will the DISCH AGENT 2 light illuminate?
(207)
DISCH agent 2 takes up to 60 minutes after discharge of AGENT 1
What is the effect of selecting
RACK POWER OFF ?
(209)
Power is removed from the AFT AVIONICS COMPARTMENT PANEL. All controlled systems completely shut off
What does the SMOKE light indicate
if illuminated in the RACK POWER pb?
Illuminates red and an aural alert sounds when the system detects smoke in the compartment
Illumination of a SQUIB light indicates ________?
(213)
Illuminates white to indicate that the respective fire extinguishing system is armed
Illumination of a DISCH light indicates ________?
Illuminates amber when the respective bottle has lost pressure
Pushing and releasing an ENG FIRE pb
closes which valves?
(217)
Low pressure Fuel valve
Hydraulic Fire shut off valve
Engine Bleed valve
Pack Flow control valve
219
Pushing and releasing an ENG FIRE pb
accomplishes what actions?
1.
Silences the aural fire warning
2.
Arms the fire extinguisher squibs
3.
Closes the Low pressure Fuel valve
4.
Closes the Hydraulic Fire shut off valve
5.
Closes the Engine Bleed valve
6.
Closes the Pack Flow control valve
7.
Cuts off the FADEC power supply
8.
Deactivates the IDG
