175 GROUND SCHOOL DAY 6 Flashcards
Minimum fuel provides 45 min of fuel endurance based on?
1,500 ft.
Green dot
Clean
Each of the two main fuel tanks is broken into three parts: the main compartment where fuel is stored and?
Surge
Collector
When set to AUTO when will AC fuel Pump2 turn on?
- Engine 2 Start
- APU start
- X FEED LOW 1
- Main Ejector 2 Fail
When set to AUTO, when will AC Fuel Pump 1 turn on?
- Engine 1 start
- X FEED Low 2
- Main Ejector Fail
How does XFEED work?
Energizes the high side ACFP and sends that fuel to both engines.
Systematically what causes FUEL LO LEVEL Warning MSG?
Any time the fuel sensor in the collector tank does not detect fuel
The ELECTRICAL EMERGENCY EICAS message will extinguish after the RAT is deployed?
False
After the RAT is deployed it takes control of the AC ESS BUS. What items are on the BUS?
- ACMP 3A
- ACFP 2. ALTERNATE FUEL PUMP
- SLAT CHANNEL 2
- FLAP CHANNEL 1
NOT ACMP 2 (I GUESS THAT IS ALTERNATE CURRENT MOTOR PUMP)
If the LFE is not in the database, how does the pilot set landing field elevation for pressurization?
Move the MODE selector to LFE CTRL and move the LFE knob DOWN or UP. This change the LFE indication on EICAS
Whit the Pressurization MODE knob in AUTO, Pressing the DUMP button will?
- Turn the Re-Circulation Fans OFF
- Turn the packs off
- Modulate the outflow valve to maintain a cabin altitude climb to 12,400ft. At a rate of 2,000fpm
With the Pressurization MODE knob in MAN, pressing the DUMP button will?
- Turn the Re-circulation Fans OFF
2. Turn the Packs OFF
The positive pressure relief valve willl open when dirrential pressure reaches _____ so as to not reach the maximum differential pressure of _______?
- 6
8. 8
Each PSU (passenger service unit) contains ____ masks that supply oxygen for approximately ____ min.
3
12
SkyWest minimum holding speed 6,000 ft. And below is _____
Minimum hold speed 6,001 and above is _____?
200 kt.
210 kt.
What is needed to get the Green light for pushback?
- NWS off
- BRAKES OFF
- Outside Disconnect switch disconnect
Check Thrust normal T/O
N1 Green
ATTS Green
Gauges Good
Minimum fuel based on?
Minto Fuel
EMER FUEl
Clean, Green Dot, About 3,000 ppl
45 min 2250
30 min 1500
Collector tank to EDP then ______ to engine.
Motive flow
DC Fuel Pump used for?
Start Right Engine with no AC Power
Start APU with no AC Power
Works on ground and Inflight
Cannot be used for sustained usage.
XFEED Selector
But remember it indirectly X feeding
Will not work if AC or DC fuel pump switches are not I their AUTO position (they override the XFEED selection.
XFEED SELECTOR
LOW 1: opens the crossfeed valve and automatically activates the right AC fuel pump (AC PUMP 2), supplying fuel to both engines from the right wing tank.
OFF: closes the crossfeed valve.
LOW 2: opens the crossfeed valve and automatically activates the left AC fuel pump (AC PUMP 1), supplying fuel to both engines from the left wing tank.
X Feed only works if?
AC fuel pumps are AUTO and are working.
Pressure refueling
Can be done with the Hot Battery Bus. When the panel closes, it disconnects the power so the battery will not drain.
FUEL IMBalance WARNING
SkyWest max imbalance for T/O and Landing
Caution will be removed once fuel imbalance is ____ or less
800lbs
794
100 lbs
- Single Wing tank LOW level WARN Collector tank level
- Total both wings Warn Low level
- Single wing Caution
- Both wing Caution
- 660 lbs can get this msg also if scavenger pump fails
- 1320
- 1320
- 2640
How many fuel pumps in the Right Wing?
6 AC pump Main ejector DC pump 3 Scavenjor Ejectors
How many fuel pumps in left tank?
5
Main ejector
AC pump
3 Scavenjor ejectors
- When Electrical Emerg?
2. What Screens?
- No AC power sources powering AC BUS 1 and 2
2. 2 (Primary flight display so can fly). 3. (EICAS). And IESS
Electrical Emerg
What instruments?
Capt. Flies
- NAV/Com 1
- IRS 1
- CCD1
FO Plays in Box
- FMS2
- MCDU 2
- GPS 2
Electrical EMERG light stays on till?
Batt Discharge light stays on Till?
Normal power restored
RAT deployed
RAT not deployed 8 sec
Battery Discharging
Batteries connect to their respective Buses, DC ESS bus then Inverter to AC STBY bus
Batteries will only last for 10 min
You get 2 APU starts
Why is AC standby bus important?
Houses the igniters 1A and 2A (or known as exciters)
What minimum Speed to Start the RAT
Max speed for RAT
Minimum speed for RAT
150
300kt. Under 8,000 and 320 or .82 above 10,000
130
RAT deployed
Min speed to keep spinning
Stays attached to _______ even if get normal power
Flaps land _____
130
AC ESS
3
RAT Deployed
Pump unloaded?
Flow limiter?
Pump unloaded reduces the electrical power required to start HYD pumps 3A
Limits the electrical power that HYD pump 3A can draw.
ECS ON means?
ECS OFF means?
APU off
APU on for Bleed air.
Dump pressed MAN mode?
Dump press AUTO mode?
If the dump valve is pressed it turns off the RECIRC fans and PACKS. If the system is in MAN the cabin will not dump but the RECIRC and PACKS will still turn off.
If the dump is pressed with the system in AUTO the RECIRC and PACKS turn off, the cabin
will climb @ 2000 FT/Min to 12400 FT and then closes and natural A/C leaks will continue to
slowly depressurize it.
DUMP is used for
The dump function is used for 3 things:
- Emergency evacuation
- Smoke evacuation
- Fast cabin depressurization
OUTFLOW VALVE
POSITIVE PRESSURE RELEIF VALVE (won’t explode) 8.6 to 8.8
NEGATIVE PRESSURE RELIEF VALVE (won’t crumple like can)
STATIC PRESSURE PORT
TWO CABIN CONTROLLERS
Outflow value (adjusts the differential pressure) (electrical)
- Positive pressure relief value (opens to stop overing DIFFing) (mechanical)
- Negative pressure relief value (opens to stop under DIFFing) (mechanical)
- Static pressure port
- Two cabin pressure controllers (the brains of the system)
10th Stage:
6th Stage
10th stage stronger, bigger number, High pressure. Needed for lower demand. Engine starts
6th Low pressure higher demand. Easy we already have a lot of power so doesn’t need to work so hard.
Normal Pressure Differential
7.8 to FL 370
370 and above 8.4
Where is Crew oxygen tank?
How Long 100%
How long at NORM
FWD cargo
22 min 100%
98 min at NORM
PAX OXY
Each side of plane contains how many mask?
Good for?
Automatically deploys?
Or if you select the
3
12 min
14,000 to 14,750
OVRD Switch
RVSM starts At
Deviations greater than _____ must notify ATC
Ensure climb VS is ______ or less. But no less than _______.
Shouldn’t shoot through altitude by more than _______.
When changing levels
29000
200 ft.
1500 FPM. But no less than 100 FPM
150ft.
Turbulence Penetration Speed?
Below 10,0000 250 kt
Above 10,000 270 to .76
In RVSM what instruments are required 4 items.
For Heck sakes TCAS is not required!!!
- ALT alerting and capture
- CA altimeter and FO altimeter
- Transponder
- Autopilot
Notify ATC if you lose One of these
When PAX masks deployed it automatically turns on ______ and _______ signs?
Masks in LAV
seatbelt and
No smoking.
2