Oral Questions Flashcards
1
Q
How many status messages can be shown on the status page
A
11
2
Q
How many external power attachments are there?
A
1
3
Q
How do we know external power has been successfully attached
A
AVAIL light illuminate
4
Q
With External Power available, is there any more buses available?
A
Ground Handling. Loyal to external power
In addition to Hot Bat, Main Bat, Standby AC and DC Buses
5
Q
What does the addition of Ground Handling bus provide with the connection of External power the aircraft?
A
Ability to load cargo, refuelling
Backup fuelling is on the Hot Battery Bus
6
Q
The ground handling bus can only be powered by one of 2 AC power sources. What are they?
A
APU and External power
7
Q
What are the components of the BTB system
A
L + R AC BTB
DC BTB
Flight Instrument Transfer BTB
8
Q
Why are there only 2 BTB switches?
A
When pushed in, Boeing controls the logic/system, and all 5 work automatically
9
Q
If the 2 BTB switches are NOT in the auto position, will any of the BTB’s work automatically?
A
No, the Boeing logic can’t control the system
10
Q
What’s the purpose of the BTB system?
A
Prevent Paralelling
Isolate from a fault
Provide cross side power
11
Q
What is parelleling
A
When more than 1 AC power sources try to power a bus
12
Q
What’s the position of the BTB’s, on the cross side bus, with external power connected but not turned on?
A
Both open
13
Q
What is the position of the Flight Instrument Transfer and DC BTB’s, with external power connected but not powering the system?
A
Open
14
Q
Do the L and R BTB’s work in normal and non normal times? What about the DC BTB’s?
A
L + R = Yes
DC = Only in non normal
15
Q
External power is turned on. What happens to the L + R BTB’s on the cross tie bus?
A
Close
16
Q
WHat is powered with the closing of the L + R BTB on the cross tie bus when external power is selected?
A
L + R Main AC buses. And from there all buses are powered
17
Q
Starting the APU. What is the process?
A
Fully automatic, controlled by the ECU
18
Q
APU start selector is moved from off to on to start back to on, why is that done?
A
Because its spring loaded and it may snap back
19
Q
Starting the APU, what is the first light we see?
A
Single fault light flash indicating the fuel valve moving from fully closed to fully open
20
Q
Starting the APU, why does the Run light blink twice?
A
System self test of the 2 batteries
21
Q
On starting the APU, what occurs after the RUN light blinks twice?
A
ECU introduces fuel and ignition automatically
22
Q
What do we see if the APU at 95% or above?
A
Run light remains on steady
23
Q
Just started the APU, with the steady run light on, with the external power powering all buses, is the APU powering any buses?
A
No
24
Q
With external power powering all buses and the APU available, what must happen to get the APU to power the buses?
A
External power to off
25
After selecting APU power, which buses are now powered by the APU?
All buses except the ground handling bus
26
Does the position of the BTB on the cross tie bus change with the selection of the APU as the power source?
Still closed
27
APU running, disconnection of external power - what happens to the AVAIL light?
Goes off
28
What happens to the ground handling bus with the disconnection of the external power?
APU now powers the bus
29
If we take off with the APU running, will the Ground Handling bus be powered in flight?
No.
30
When does the Ground Handling Bus stop being powered if going in to flight, if the APU is running?
Main gear tilt logic
31
Starting the engine, which HYD system is the first to be pressurised?
Right.
32
Why is the R HYD system the first to be pressurised on engine start?
Normal Brakes on the R system
33
Why is the HYD system pressurised counter clockwise? And depressurised clockwise
Prevent unnecessary fluid transfer in to the R reservoir
Up to 19.24 on first video
34
What is the purpose of the APU shuffle?
Old airplane. Doesn’t automatically manage flow properly.
One way check valve may not work
35
Talk thru the APU shuffle
36
Cleared to start the right engine. Engine start selector moved to ground. Why do we start a timer?
Engine Starter Duty Limit.
5 minute limit. For every minute the starter is engaged requires 30 second rest
37
When the start selector is moved to ground, what happens to the ignition?
Armed
38
What happens when the ignitions are armed during start?
Sequencing the igniters
39
With the start selector moved to ground, what happens to the start valve?
Opens
40
How can we confirm the start valve has opened?
Valve light illuminates and goes off
41
After the start valve has been confirmed open, what is the next system to observe?
Duct pressure
21PSI
42
Why isn’t 21PSI duct pressure seen before the start of the engine?
APU wasn’t commanded to provide increased pneumatic pressure until ground is selected
43
After duct pressure of >21PSI is confirmed, what is checked next in the engine start sequence?
Upper line of the lower EICAS
Oil Pressure and N2 both increasing
Fuel cutoff control switch
Clock started after minimum fuel on indicator passed
44
Describe Stabilised N2
Less than 1% rise in 5 seconds = max motoring
45
When is fuel introduced during the start?
Max motoring
46
What needs to occur within 25 seconds of max motoring?
Light off
47
What must be visually confirmed when fuel is introduced during a start?
Spar Valve open
Engine Vale open
Confirms that there is pilot control of the engine
48
What happens to the ignition with the introduction of fuel during start?
Energised
49
What can be confirmed after ignition is energised on the engine instruments?
EGT rise, light off
50
The EGT tick on the N1 gauge, that is only present during start - indicates what?
indication of hot start limit (750 degrees)
51
On engine start, passing 50% N2, what happens to the start valve?
Closes
52
What is start cutout?
Start selector moves to auto
53
With starter cutout, what happens to the ignition?
Disarmed - because engine is self sustaining
54
When do we call normal start?
When the Boeing logic for a normal start is met, the EGT tick is removed.
55
During start of the right engine, what is load shed?
Utility buses
L electric demand pump
56
Started the right engine, APU running, left engine shutdown, what is providing air to the 4 ducts?
The right engine
57
When the left engine is started, what happens to the rightbleed air valves and the APU bleed air valve?
APU bleed air valve open
Engine bleed air valves close
because the APU bleed air is what starts the engines
58
With the right engine started, the left engine still shut down, what is the position of the BTB’s?
R BTB open
L BTB closed
The R BTB is open to prevent the APU paralleling
59
What happens to load shedding after the start of the first engine with the APU running?
Load shedding is restored
60
What is load shed during the start of the second engine?
Onside Utility bus
61
What happens to the bleed air valves up successful start of the second engine?
Both engine bleed air valves open
APU bleed air valves close
62
After successful start of both engines, what is the position of both AC BTB’s?
Open
63
How many status messages can be shown on the status page?
11
64
If more than 11 status messages exist, how are they displayed?
10 messages on page one
Press status button to view second page
65
If status button is pressed and there is nothing to display on page 2, what does the screen look like?
Blank, push status again to return to page 1
66
Can we fly with the lower EICAS page blanked?
We can, but we don’t as a group of pilots
If it is blanked, it will be automatically repopulated with the correct EICAS message
67
What is a status message?
Maintenance related problem
68
When do we have to either clear or fix a status message?
Before engine start or push back for the purpose of engine start
69
The symbols on the status page are produced by?
EICAS computer
70
What are the HOBOS?
Hydraulic quantity
Oxygen Quantity
Brakes Set
Oil Quantity
Status Messages - check and clear
71
What is the status clearing procedure?
First square push and release
First Round push and release
Last Round push a hold to clear
If messages don’t clear call maintenance
72
What does EEC stand for?
Electronic Engine control
73
Is the EEC for the L + R Engine a full FADEC?
Yes
74
There are 2 ways to operate the EEC. What are they?
Normal
Alternate
75
With the EEC in normal what is the controlling parameter?
N1
76
With the EEC in alternate, what is the controlling parameter?
N1
77
With EEC in normal what protections are provided?
Overspeed
Overboost
78
What is overspeed protection?
RPM
79
What is Overboost protection?
Pressure/Power
80
What is the maximum thrust produced by this airplane?
60,200lbs
81
How does the EEC protect the engine in overboost protection?
EEC commands the fuel metering unit to remove fuel
82
What is an EEC soft transition?
Boeing logic commands the EEC to alternate mode
83
What is an EEC hard transition?
Pilot commands EEC to alternate
84
Can overboost occur during a hard transition?
Yes
Boeing protects against this during a soft transition
85
When in alternate, what EEC protections are provided?
Overspeed
86
If you have a soft transition in flight, are there any immediate actions that should be completed?
No. Boeing logic ensures little will change
87
What are the resources provided by the EEC in flight?
N1/power relationship
Atmospheric compensation
Bleed air compensation
Approach Idle
Auto ignition in Auto
Auto relight
88
On an auto relight, when does the EEC sense that you’ve lost the engine?
Below N2 idle
89
In flight, R Generator OFF light while the IDG’s are providing power and the APU is shutdown, what happens to the GCB?
Opens to protect the good bus from the bad generator
90
In flight, Generator OFF light while the IDG’s are providing power and the APU is shutdown, what will the BTB’s on the AC BTB system do?
Both with close power the opposite side
91
In flight, Generator OFF light while the IDG’s are providing power and the APU is shutdown, BTB’s close to provide power to the other side. Does load shedding occur?
Yes.
Galley buses
Utility buses
Whatever Boeing logic decides
92
EICAS message: R GEN OFF
What checklist is called for?
Right generator off checklist
Non normal checklist
93
EICAS message: R GEN OFF
What will the R Generator Off checklist require to be completed?
Reset the generator
94
In flight, the APU at 95%, steady run light, R GEN off, how do the BTB’s look on the cross tie bus?
L BTB open
R BTB closed
95
Middle of Atlantic Ocean, 2 generators powering buses, R Bus off, what lights are on, with R bus off?
R Bus Tie ISLN
R Bus OFF
R GEN off light
utility bus lights
96
Middle of Atlantic Ocean, 2 generators powering buses, R Bus off, what items are no longer powered by the R AC bus? What items are now powered by another AC power source?
R TR no longer powered
Ground Service no longer powered
R Main DC bus continues to be powered by the L Main DC bus thru DC BTB
R AC transfer bus no longer powered
FO Flight Instrument Transfer bus now powered by the L Main AC bus thru the BTB system
Both utility buses are no longer powered as we are single AC power source
97
With the loss of the R main AC bus, what is the implication of losing the Ground Service Bus?
No battery charging.
Batteries not discharging
98
With the loss of the R generator, the APU is started as backup power source for the operating L Generator, where do we point the nose of the airplane?
Nearest suitable airport
99
Single AC power source, diverting to nearest suitable. Who should we talk to?
Dispatch
100
Single AC power source, diverting to nearest suitable. 1 hour 11 minutes from diversion airport. Left bus light comes on, what is this called
Dual Bus Failure
101
Single AC power source, diverting to nearest suitable. With a failure of both AC buses, are there any normal AC buses powered?
No
102
Single AC power source, diverting to nearest suitable. With a failure of both AC buses, what does Boeing logic command?
HDG to come on
103
How many buses does the HDG power?
7
4 standby buses
2 AC transfer buses
Captains Flight Instrument Transfer Bus
104
How does the cockpit look when powered by the HDG?
Everything left of the gear handle is powered except the 2 CRT’s and the Autobrakes
105
On the HDG why does the battery discharge light come on?
Battery charger is produces stronger power than the HDG, as soon as they equal the discharge light goes off
106
How much time do we have on batteries?
30 minutes
107
Why does the Heading flag display on the captains RDMI after 5 minutes on hot battery bus power?
R IRU shut down
108
On Battery power, how many buses are powered?
Battery Bus
Hot Battery Bus
Standby AC
Standby DC
109
On batteries, what happens to the OVRD boost pump?
Not powered
110
On batteries, how is fuel delivered to the engines?
Suction fuel
111
What considerations should be made with reference to altitude and suction fuelling?
Lower is better
112
On battery power how is the gear extended?
Alternate gear extension?
113
On alternate gear extension, how do we release the uplocks that holding the nose gear and main gear doors up?
Electricity and gravity. Held down by mechanical downlocks
114
How are the flaps extended when operating on battery power?
Alternate flap extension using electrics
115
Are the radios powered on battery power?
Yes
116
Can we complete an instrument approach on battery power?
ILS
LOC
VOR
NDB
117
How is pressurisation managed on battery power?
Manually
118
Does the fuel quantity indicating system and cross feed work on battery power?
Fuel quantity indicating system = yes
Cross feed = yes
We can’t cross feed using pumps, but can using gravity
119
Approach on Standby power, Generator drive light illuminates. Can the generator be disconnected?
Yes
120
When the ignition control panel is in AUTO, what is provided?
Whenever in Auto the EEC’s will give ignition whenever Boeing logic decides
On start, auto relight ect
121
What are the reasons for CONT ignition?
Volcanic Ash
Moderate to Heavy Rain
Icing Conditions
Moderate to Severe Turbulence
Contaminated Runway - Standing Water/Slush
122
When CONT ignition is selected what happens to the engine RPM?
Approach idle
123
When Ignitions are select to FLT, how many igniters are working?
2, no matter what is selected
124
What are the 3 reasons the EICAS screens can blank?
Loss of normal AC power
Dual CRT failure
Loss of both EICAS computers
125
With both EICAS computers working normally and the EICAS computers in AUTO, what is producing the symbology for the upper EICAS screen?
Left EICAS computer
126
How do we view the secondary page of EICAS messages?
Press Cancel
127
If we have 3 warnings on page 1 of EICAS, will they display on page 2?
Yes, displayed until fixed
128
What is the order of EICAS warnings/cautions/advisory’s?
Recency
129
How can we identify an EICAS advisory?
Indented
No Caution beep
No glare shield caution
130
If we lose a single CRT, what happens to the information?
Compacted to single screen
131
In compacted format what happens to the primary instrument display?
They look the same, just smaller
132
In a compacted format, how many EICAS messages are displayed?
11
133
In a compacted format how to we check Status messages in flight?
We can’t, they’re inhibited
134
Which logic inhibits the status messages in flight?
Main gear logic
135
What systems utilise the nose gear logic?
Warning Inhibit
Caution Inhibit
Stall Warning
136
When does the oil pressure light come on in flight?
Less than 10psi
137
What does the FMC light indicate?
Message on the scratchpad
138
Low oil pressure on the right engine would show on the EICAS as?
Amber
139
What is the green tick on the EICAS
Pilot commanded thrust
140
What is the amber tick on the EICAS?
Max Thrust
141
What is the red line on the EICAS?
EEC is taking control to remove fuel and prevent un-contained engine failure
142
If operating in VNAV, what is controlling thrust?
FMC
143
What is the maximum temperature of the engine on takeoff? Max continuous?
960 and 925
144
How long can we operate single engine at max takeoff thrust?
10 minutes
145
How many events can Boeing record?
As many as it wants. We can only record 1
