General Flashcards
Is electrical power required for wing sweep operations?
No, they are hydraulically controlled
Pressure reading for APU accumulators
3600 to 4250 psi
Which component must be serviced prior to APU run what component must be checked
Service: ADG
Check: APU IDG
What position must UHF 1 and UHF 2 switches be set to
Upper
What position must the EMUX overtemp switch be set to?
On
On FUEL MGT Panel, ensure CLG SCOOP is set to what position?
Auto
What system is activated by the ENG BLEED AIR switches?
Bleed air Leak Detection System
What are my limits for operating the parking brake switch
Don’t hold for more than 30 seconds. Allow for 5 minute cool down.
What is load management 1 used for? How many APU’s are in use in this LM?
Refuel/Defuel. L APU only
What is the nominal start time for starting the APU?
15 Seconds
What percentage RPM will the APU RUN light illuminate?
95% RPM
What shall be closed prior to APU operation
Lower engine bay doors
What must personnel and equipment be clear off before applying hydraulic system pressure
Flight surfaces flight controls
During an APU run, what must your hydraulic system pressure be between?
3900-4150 PSI
What moves when you set the ENG INST TEST switch to HIGH?
APU Exhaust Doors
How long is the SCDU powered up for when you press ENG INST TEST to HIGH? What LM must you be in momentarily?
2 minutes. LM 4
To prevent APU oil from overheating, the APU shall not be operated without electrical power for how long?
5 minutes
What must you do if you get an illuminated ENG switchlight on your Fire Warning & EXTGH panel when no engines are running? Why?
Shut down as if there were a fire. Engine comp loops may be detecting a fire
What three things will occur immediately when a fire occurs in an APU compartment
- APU will shut down
- Light will illuminate
- Aural tone will sound
What load management do you have to monitor ACL and fuel inlet temperatures? How many PMCS are required to monitor?
LM 4 w/o External Cooling
ACL = 1 PMC
Fuel Inlet Temp = 2 PMC’s
Minimum time to run APU before coupling?
30 seconds or 5 minutes if cold or not run in the last 4 hours
How long should the ADG take to couple?
6 seconds
How long should ADG couple below 30 degrees?
20 seconds
What should I do if air is not coming out of one or more of my fuel cool scoops
Terminate APU run and troubleshoot
ACL coolant supply temperature, during LM 4 (external power, no external cooling) operations should not exceed?
90 F
Stop operations if fuel inlet temperatures exceed?
165 F
What must you do if you turn on the battery switch and a fire switch light is depressed?
Reset switch between Engine switches
What are the three modes for starting APU’s?
Alert, Normal, Manual
How many fire bottles are there on the B-1 and where are they located?
There are 8
L OWF = 2
R OWF = 2
L Nacelle = 2
R Nacelle = 2
What must be done prior to running APU’s if the Engine Instrument SCDU is removed?
Parking Brakes
On Elec Panel, after BATT switch is set to AUTO/ON, what should my voltage read?
25 (+/-5) VDC
What position on the FLT CONTR PWR panel must be the ALRER WG SWP switch be in prior to coupling & decoupling APU’s?
Hold
What is the power source for the FIRE WARNING & EXTINGUISHING panel and the OWF/FIRE DETR panel?
Aft & fwd DC BATTERY
How long can you run with hot lights?
4 minutes
What are your main fuel tank limitations?
6100 - 10500 lbs per tank
What should the main fuel tank valves be set to?
Closed
What do you do if you get a MLG aural unsafe tone?
Shut down
At what oil temperatures will the ECA shut down the APU?
Over 290 F
The CRSVR Air switch should be in what position?
OFF
Prior to APU start, what position do you set the TRANS pumps to on the Fuel Management Panel?
OFF
