Systems Flashcards
What is the Min crew?
2 Pilot
4 FA
Length?
Wingspan?
129’6”
117’5”
How much space for 180 degree turn?
79’
When do fwd/aft overwing doors become unlocked?
On the ground OR DC power removed
How many exits?
10
What emergency equipment is on the flight deck?
3-3-CHEEP
3 life vests 3 oxygen masks Halon fire extinguisher Crash axe PBE ELT Escape ropes
When does the oxygen mike become active?
When the right stowage box door is opened
When is passenger oxygen activated?
Cabin altitude above 14000’
Can I have fixed landing lights and turnoff lights on at the same time while stopped?
No, too much heat
What are three ways emergency exit lights come on?
Turned on on the overhead panel
Turned on at the aft attendant panel
Loss of electrics or AC power off
Which light switches are on the Captain side of the overhead panel
Landing, turnoff, taxi
Where is the dome white switch
Aft overhead panel
Does the FA emergency light switch override the flight deck?
Yes
Can the Captain’s flight deck window be opened from the outside? Can the FOs?
No
Yes
How long does passenger oxygen last?
12 Minutes
What does the GRD POWER AVAILABLE light mean?
GPU is connected and meets power quality standards.
What does the APU GEN OFF BUS light mean?
APU is running but its generator is not powering a bus.
When does IDG disconnect switch work?
Electric power available and engine start lever is in IDLE.
Can I reconnect an IDG in flight?
No
What does the DRIVE light mean?
IDG low oil pressure or under frequency condition.
What does the GEN OFF BUS light mean?
The IDG is not powering the related transfer bus.
What three busses does each Transfer Bus power?
Main bus, Galley bus, Ground Service bus. Transfer Bus 1 (left side) also powers the AC Standby Bus.
What does the TRANSFER BUS OFF light mean?
The related transfer bus is not powered.
What happens when the BUS TRANS switch is off?
AC transfer bus 1 is isolated from bus 2. In Auto, the bus ties would close.
What does the SOURCE OFF light mean?
No power source has been manually selected OR the manually selected source has been disconnected
What do Transformer Rectifiers do?
Convert AC power from the Generators or External Power to DC
What does the TR UNIT light mean?
TR1 failed, or TR2 and TR3 failed. On the ground, any TR failure will illuminate the light.
What does the main battery do? What does the auxiliary battery do?
Power for APU or engine start. The Aux battery operates in parallel with the main only when using standby power.
What is the battery voltage range?
22-30 volts.
What does the BAT DISCHARGE light mean?
Excessive battery discharge detected.
What are the three battery busses?
Hot Battery
Switched Hot Battery
Battery
How long can standby power function on batteries?
60 min
What busses are on the standby power system?
Switched hot battery bus Hot battery bus Battery bus DC standby bus AC standby bus
What does the ELEC light mean?
Only illuminates on the ground, and indicates a fault in the DC power system or standby system
What does STANDBY PWR OFF light mean?
Power removed from the AC standby bus, DC standby bus, or Battery bus
What happens when the STANDBY POWER switch is in the BAT position?
It forces the batteries to power AC standby bus, DC standby bus, and battery bus.
What does the GROUND SERVICE switch do?
Enables aircraft servicing with external power without energizing the AC transfer busses
Where is the GROUND SERVICE switch located?
Forward FA panel
Can sources of AC power be paralleled?
No
What happens when I connect a new source of power to an AC bus?
The old source is disconnected.
What three components are powered by the ground service bus?
Utility outlets
Cabin lighting
Battery chargers
What is the function of the GEN switch?
Disconnects or connects the IDG
What do Air Data Inertial Reference Units (ADIRS) provide?
Position
Speed
Attitude
Altitude
How many Display Electronic Units (DEU) are there?
- They power all six display units
When do CDS fault messages appear?
On the ground prior to the second engine start
What is the difference between CDS FAULT and CDS MAINT
CDS FAULT is NOT dispatch-able
CDS MAINT is dispatch-able
The FMA’s are in what order?
Autotrottle
Roll
Pitch
What does the Pitch Limit Indicator do?
Indicates max pitch limit for current phase of flight. Above Pitch Limit Indicator, you’ll get stick shaker.
What is the max gear extended speed
320 kts
What is the bank angle limit below V2+15?
15 degrees
What does the ALT DISAGREE alert mean?
Capt and FO altimeters disagree by more than 200’ for more than 5 sec
When does the flight recorder begin to operate?
Either engine starts
Which Radio Tuning Panel does ACARS use?
RTP 3
What bus powers each radio?
VHF1- DC Standby
VHF2 and 3- DC 2 Bus
How many HF radios? How many HF antennas?
2 radios, 1 antenna
When operating radios in the degraded mode, which radio does each crewmember use?
CA- VHF1
FO- VHF2
OBS- VHF1
Hand mike will be inop
What are the PA priorities
Flight deck announcements
FA announcements
Pre-recorded announcements
What does the FAULT light on the fire detection panel mean?
Both fire loops in an engine have failed
What does the APU DET INOP light mean?
The APU fire loop has failed
What does the DETECTOR FAULT mean on the Cargo Fire panel?
Both loops have failed in one or both cargo compartments
How many fire bottles are there for engine/APU/cargo?
Engine- 2 bottles
APU- 1
Cargo- 1
What systems have fire detection?
Engines APU Cargo Lavatories Wheel well (no extinguishing system)
What bus powers fire detection systems? What bus powers fire extinguishing systems?
Detection- battery bus.
Extinguishing- hot battery. I can always fight a fire!
Where is the APU ground control panel?
Right wheel well
What is the ENGINE FAIL alert?
It is displayed on the EGT indicator
It is displayed when engine is less than 50% N2 AND the Engine Start Lever is in the IDLE position
When should start lever be placed to idle during a normal engine start?
When N2 is at max motoring (less than 1% rise in 5 seconds) AND there is N1 rotation. N2 minimum is 25%.
When should engine start switch move to OFF during a normal engine start?
56% N2
When will the Electronic Control Unit (ECU) cause the APU to automatically shut down?
APU fire
APU overspeed
APU low oil pressure or high temperature
APU fault
When is the APU ready to run bleed air and electrics?
When the APU GEN BUS OFF light illuminates.
Two minutes.
What type of engine?
CFM56-7
What does the Electronic Engine Control (EEC) do?
Uses N1 to set thrust in either normal or alternate modes
What does the EEC ALTN light mean?
The EEC is in alternate (soft) mode. The EEC uses the last valid flight conditions to define engine parameters.
How do I put the EEC in alternate hard mode?
Retard the thrust lever to Idle OR turn the EEC switch off
What are the primary engine indications on the upper Display Unit (DU)?
N1
EGT
Fuel Flow
What does a red box in the N1 display after shutdown indicate?
An exceedance during the flight.
What malfunctions should cause an aborted engine start?
N1 or N2 does not increase after EGT
No oil pressure by the time the engine is at idle
EGT does not increase by 10 seconds after the engine start lever is moved to idle
EGT quickly nears the start limit
What does the EEC monitor during engine start (ground only)?
Hot Starts
EGT exceedance
Wet Start
What does the REVERSER light mean?
Thrust reverser commanded to stow. Goes out after 10 seconds when the isolation valve closes. After 12 seconds, a master caution occurs if the reverser has not stowed.
What does the OVERSPEED light on the APU panel mean?
RPM limit exceeded OR
Self Test failed (during shutdown)
What does the FAULT light on the APU panel mean?
A malfunction has caused the APU to shutdown
What does the LOW OIL PRESSURE light on the APU panel mean?
Oil pressure low caused an automatic shutdown. This is normal to see during APU start
Can I operate the APU with the blue MAINT light?
Yes, but tell maintenance of the problem ASAP
What altitude can the APU generator be used up to?
41,000’
What power source is needed to start the APU?
External power
Engine driven generator
Main battery