Week 1 Flashcards
How often are A checks?
600 hrs +- 50
How often are C checks?
12 months +- 1 month
Are CB’s mandatory or advisory?
Advisory
Are alert CB’s mandatory or advisory?
Mandatory
How do we troubleshoot?
CMP diagnostics
Where is the CDL (config deviation list) found?
Appendix B of the AFM
If not in the MMEL, must an item be operative for flight?
Yes, unless can be found in CDL
What do arrows at the end of wires mean on WDM’s?
Wires are physically pinned on the aircraft (poke home)
What is the difference between how hard breakers are soft breakers are drawn?
Hard breakers have crosses on top
How are relays and switches always drawn?
In the relaxed (de-energised) position
What are cockpit clocks required for?
Timed flight manoeuvres
When engaged, what does the crew restraint system prevent?
Forward movement
How long does the pax seat ECU need prior to working?
20 mins
What type of hydraulic system do the pax seats have?
Closed
What colour wires are fibre optic?
Purple
What must be avoided when using fibre optic cables?
Exceeding bend radius
What frequencies are ELT transmitted on?
121.5, 243.0 MHz
When are ELT’s tested?
5 past the hour
What two things can flashing ELT’s mean?
- On indication
- Fault indication
In the MMEL, what does an M mean next to the resolution?
Maintenance action required prior to flight
What must customers use for part numbers?
The IPC
Where can’t crocodile clips be used for ESD grounding?
MAU’s and MRC’s
What is essential for a seat belt inspection?
Adequate lighting
What is to be pulled on the EBATT’s prior to maintenance or for down time of 5 days or greater?
CB1
How many primary control surfaces when on EBHA power?
7
Which BPCU’s control AC and DC power?
- Left - AC
- Right - DC
What is the UPS battery used for?
Flight control system
When do EBATT’s kick in?
20V DC or less from main batteries
When turning main batteries off, how long should you wait before reapplying power and why?
2 mins for CMC shut down
Which battery should be selected on first? EBHA or UPS?
EBHA prior to UPS?
When does the EBHA heater pad come on?
Below 60 degrees Fahrenheit
Where does the ON light for the batteries get it’s signal?
Battery contactors
What battery is required for APU start?
Left main
How many stick shaker operations during EBHA SPOST?
8
Where does the TRU overtemp discrete originate? What temp does it operate? And where does it travel on its way to CAS?
- TRU itself
- 310 degrees Fahrenheit
- Via the DGIO to CAS
How is the ground service bus powered? (Three ways)
- Right main DC bus
- External DC
- RH battery
Where does the only RED power fail CAS message originate?
RAT door switch
What can do not do with the GCU whilst the APU is running?
Reset or remove
When is RAT deployment effective?
Between 0.925 Mach and 172 knots
How is the RAT deployed? And stowed?
- Stored actuator pressure
- Hand pump
What is aircraft power system priority?
- Onside
- APU
- External
- Offside
Essential over main
Left over right
What must be ensured when stowing the rat?
Blade alignment lines are aligned
Where are power tiles loaded from? And where is the information kept?
MCDU and RIU’s
To pull SSPC breakers prior to powering aircraft, what mode must you be in? And to perform SSPC data loads, what mode must you be in?
- Standby
If overcurrent occurs from LEDC TRU, where is the power pulled from?
L BPCU
Where is external DC power monitored?
R BPCU
What are the emergency batteries looking for?
Voltage at essential DC bus
To close the MED with no batteries installed, what must we do?
- Ext DC power cart
- Battery switches off
To power the right essential battery bus, which contactors does power travel through?
- REDXC
- REDC
What type of bus is between the MAU and the DU?
Fibre (fee bray)
What bus is between the CCD and MAU for DU operation?
RS 422
What is the backup for CCD movement? What do they operate through?
- SMC
- Operate through control I/O
How do we get audio?
- Analog to digital conversion at NIM through digital audio bus
- information goes to audio control panel
- Digital to audio conversion and sound through speaker
How does the FDR collect data?
From custom I/O module on arinc 717 bus
How long does the event record button cause the aircraft to record for?
100 seconds before and after event
What are the 4 types of voice communication?
- VHF
- HF
- Satellite
- In flight
How long does the CVR record for?
2 hours on loop
What 4 locations does the CVR record from?
- ACP 1 - 3
- Area mic
What parameters are needed for CVR bulk erase?
- WOW
- MED open
What does RIPS provide to the CVR?
10 mins of power
What does RVSM dictate?
- reduction in vertical flight separation from 2000 to 1000 ft separation between FL 290 to FL 410
TAT probes 1 and 2 are powered by which Air Data Systems?
- 1 = 1
- 2 = 4
In air data systems, if secondary channel fails, what colour CAS message do you get? If primary channel fails, what colour CAS message do you get?
- Secondary - amber
- Primary - cyan
Where does SMC receive air data from?
ADS 4
Where is the satellite interface unit located?
Tail compartment
Where is the Nav com module located?
REER mini cabinet
Where is barometric correction made?
The flight guidance panel
Why don’t we touch air data probes?
Get extremely hot and cause harm
Where are the aircraft personality modules located?
NIC/PROC’s 1 and 4
How many GPS systems are required for position and height?
- position = 3
- height = 4
What does WAAS (wide area augmentation system) compliance do in GPS antennas?
Removes errors from GPS satellites
Where is the FMS software?
MAU NIC/PROC’s 2, 5, and 6
What does EGPWS prevent?
CFIT (controlled flight into terrain)
Which EGPWS function can’t be disabled?
Wind shear (mode 7)
What types of wire from EVS to processor and from processor to HUD computer?
- EVS to processor = fibre optic
- Processor to HUD computer = coax
EVS sapphire window has what length heating cycle when selected?
2 mins
What is unique about the EVS camera image?
Inverted
What does the NUC (none uniform correction) do in the EVS system?
Calibration and cooling of light sensors
What is the minimum permissible exposure distance for WX?
15 feet
What type of system in the WX?
X band
Where is the weather radar controlled from?
SMC (pilot and copilot independent)
In the AP system, which servo does pitch and which does roll?
- left = pitch
- right = roll
In the AP system, which AIOP lane commands, and which monitors?
- A = monitor
- B = command
How often is RVSM inspected?
24 months
Where is the CMC card?
MAU slot 11
What does CMC do?
Stores all fault history
Where is the CMC member system database?
LDI (loadable diagnostic information database)
Where does the ground maintenance test switch sends a discrete to where?
SGIO 1 and 4
What is CMC used for? 3 answers
- testing
- real time data
- rigging
How long is the CMC power up time?
2 mins
Where is the ACMF (aircraft conditioning monitor function) located?
CMC
Where is the auto throttle engage/disengage button located?
Aft side of throttle quadrant
Where is pitch and roll manually input to AP?
Flight guidance panel
If CMC is not available on DU2 but is available on DU3, what failure do you have?
RIB (remote image bus)
Where is the IRU alignment data stored?
Configuration modules
How is the IRS powered?
On switch removes the ground discrete to turn on IRU’s
Where is the attitude heading reference system (AHRS) used?
For flight information on the SMC’s
Where are the magnetometers, what are they used for, and what type of bus do they communicate on?
- located in aircraft tail
- used in the AHRS system
- communicate on the CAN bus
What is the primary source of altitude information?
RADALT between -20 and 2500 feet
How do you recalibrate the RADALT?
- press SW1 switch and watch the display go from 500ft to 0
How do you test RADALT?
Use SMC and watch figure go to 50 feet
When do you get 60hz power and why?
Only when something plugged in to sockets to provide ground discrete to the RIU’s. To prevent unnecessary power in oxygen rich environment
To enable SSEC (static source error correction), what configuration must the aircraft be in?
Power off
What provides the ground discrete to the APU ready light?
APU door fully open
How many consecutive APU start attempts can you carry out?
3 then must wait an hour?
What monitors x tie contactors?
Opposite side BPCU’s
How many buses comprise the ASCB (avionics standard communication bus)?
4 total
- # 1 primary and secondary
- # 2 primary and secondary
Cabin view is not receiving nav information. Where might our problem be?
The FMS maintenance data server
What type of bus is between GCMS and the cabin components?
Ethernet
If any of the TRU’s fail, what happens to cabin power?
Cabin power would drop off
If the remote terminal for CMC doesn’t work, what could be the problem?
The incorrect CMC software version is not installed on the remote terminal
What breakers have to be pulled to protect CMC when removing the EBATT’s?
MAU 1B primary and secondary
Before pulling the CMC card from the MAU, what breaker needs to be pulled?
EBATT CB1
Where would you download unsent AHTMU data from?
Directly from the AHTMU, via Ethernet cable into the maintenance laptop
If the AHTMU is up and running, why might it not record?
Avionics standard communication bus (ASCB) not up and running yet
What profile allows the operator to set specific settings on the aircraft?
The operator profile (OP)
The crew reports a P2 and P3 fault. What could be the issue?
Faulty SIM card
