Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
24 Cards in this Set
- Front
- Back
|
When the Hydraulics are pressurized, what is load shed? |
-C2 Electric Hyd pump. (Press light will show) -Galleys |
|
|
When the Right Engine is started, what load shed event happens? |
-Both Utility Buses (recircs) -Left Electric Demand pump(press light) (C2 Hyd pump still shed from APU elec shedding) |
|
|
During a Right AC bus fault, what is the condition of each BTB? |
Right AC - Open Right engine GCB - Open FO flight inst - Closed CA flight inst - Open Left AC - Open DC -Closed |
|
|
What is the max altitude for the APU to provide electrical power? |
43,100ft |
|
|
How many bus ties are in the bus ties system? What are they? |
Five. L & R AC BTB DC BTB 2 Flight Inst BTB |
|
|
What is the purpose of the bus tie system? |
P - Prevent Paralleling I - Isolate Faults P - Power Opposite side |
|
|
What does the AVAIL light mean? |
That power is connected and that it is good power. Voltage and frequency is good. |
|
|
What does the GPU power when Ext power is not selected? |
Ground handling bus. |
|
|
What is powered on the main battery bus? |
Fire Detection Eng Fuel Valves Fuel Quantity Fuel crossfeed Standby Engine indicator Cabin Service Interphone
|
|
|
What is on the Hot Battery Bus? |
Fire Protection APU Fuel valve RAT Manual deployment IRU backup power CA inst Parking brake Alt landing gear extension |
|
|
Why would a Generator DRIVE light be illuminated? |
-The button has been pushed and IDG is disconnected. -High oil temp, low oil pressure in self contained oil system. |
|
|
What buses make up standby power? |
Hot Battery Bus Main Battery Bus Standby AC Standby DC Capt FLT Inst Xfer |
|
|
What does a discharge light mean? |
The main battery is using power and not being charged. |
|
|
How many buses are powered on a cold dark airplane? |
1, Hot Battery Bus Maybe 2 If ground power is plugged in. |
|
|
Putting the STBY POWER knob to Auto adds how many buses? And what are they? |
2, Standby AC and Standby DC |
|
|
Does the ETX PWR switch power all buses? |
Yes |
|
|
When on APU power only, what is load shed? |
-Galleys -C2 Hydraulic Primary pump |
|
|
Why will a demand pump energize? |
Low system pressure Assistance for high demand items (gear) Boeing says so (Right pump for takeoff, flaps out of up) |
|
|
When will the ground handling bus after engine start, be depowered? |
After takeoff, main gear air-ground logic. |
|
|
If you lose Left AC bus, what should be operationally considered? |
Rudder ratio, be careful with over-control, 15kt crosswind limit No autoland Nearest suitable |
|
|
If you have a right AC bus fault, would you see a battery DISCH light? |
No, the battery isn't being charged from the lost ground service bus, but isn't discharging either. |
|
|
Dual bus fault, what is powered? |
HDG power. Everything left of the gear EXCEPT: EICAS Autobrakes CA RDMI after 5min (Right IRS) |
|
|
When on standby power only, do you need to Alternate extend the flaps? |
Yes, C1-2 Hydraulic pumps are NOT powered. |
|
|
On the STBY POWER selector knob, what does BAT do? |
Forces the system to use battery and disallows charging. |
