Why are most aircraft systems DC powered when the aircraft produces AC power? - ✔✔AC power is
more efficient to produce because of lighter and smaller components, but batteries only use DC. In
an emergency with only battery power available systems must utilize DC power in order to function.
DC power often is more efficient to transmit because of lower voltages.
How many batteries does the aircraft have? - ✔✔Two nickel-cadmium batteries rated at 43amps for
the APU battery and 17amps for the Main battery
What controls DC power distribution? - ✔✔Two DCPC's
Which busses are hot busses? - ✔✔Main battery direct bus, APU battery direct bus, and the
emergency bus
What does it mean when a bus is hot? - ✔✔It is always powered, regardless of aircraft state.
Why is the DC service switch on the terminating checklist? - ✔✔It is powered by the DC service bus from
the APU battery direct bus and thus is hot, so if left on after powering down the plane you run the risk of
killing the battery. Nice job putz.
In a complete loss of AC power what happens to keep the DC essential bus powered? - ✔✔The ESS
TIE will close to connect DC ESS bus to the battery bus for emergency power.
If TRU 1 OR 2 fail what tie closes? - ✔✔The MAIN TIE will close to connect DC Bus 1 and 2. The
UTILITY Bus is shed
If TRU 1 AND 2 fail (or both ESS TRU's) what tie closes? - ✔✔The CROSS TIE
,What are you actually doing when you turn the battery master on? - ✔✔Becoming the pilot god you
always knew you were. Kidding, you fly a regional jet get over yourself. You are connecting the APU and
Main battery direct busses to the battery bus.
When will a TRU load indication on the DC electrical page turn amber? - ✔✔When it exceeds 120amps
(120.7 actually but it only shows whole numbers)
What voltage do the TRU's put out? - ✔✔28v DC
Explain a TRU to a 3rd grader (e.g. a regional pilot) - ✔✔Alternating current produced by the engines,
APU, or from an external power source is converted by these transformer rectifier units to direct
current for use in the aircraft systems.
On the DC electrical synoptic page you see the message SERVICE CONFIGURATION message. What does
this mean? - ✔✔The DC service switch is selected on
Name some items on the Emergency Bus - ✔✔APU and engine fuel SOV's, engine hydraulic
SOV's, FIDDEX system for engines and APU
How many AC and DC busses are there? - ✔✔4 and 9 respectively
Max ITT during start on the ground and in the air? - ✔✔815C on the ground and for an assisted air
start, 927C for a windmill start
Where are the multi-function spoilers vs. the ground spoilers on the wing? - ✔✔MFS are on the
outer wing and ground spoilers on inboard close to the fuselage.
When using spoilers to slow the aircraft in flight which spoiler panels will deploy? - ✔✔Only the
multi function spoilers
When landing which spoiler panels deploy? - ✔✔Both the MFS and the ground spoilers
,What other functions do the multi function spoilers have besides slowing the aircraft in flight? -
✔✔They assist with roll control
What messages can you not box on the EICAS? - ✔✔Green (advisory) and Red (your day is about to
get bad real quick homeslice)
What is the difference between between SAT and TAT? - ✔✔SAT is the free air temperature (akin to
OAT) and TAT is the SAT + the heating effect from high speed flight. TAT will also be warmer than SAT at
high speed and should be used to consider things like fuel temp, airframe icing, etc.
If your fuel temp is nearing the bulk freezing temperature during flight what can you do? - ✔✔Descend to
an altitude with warmer air or accelerate to generate skin friction and thus heat in the tanks.
What happens when you push the engine fire switch on the glareshield? - ✔✔BIGHAF
B - Bleeds close, Bottle squibs armed
I - ignitors are inhibited
G - generator is tripped offline
H - hydraulic SOV closes
A - ARM (fire bottles armed)
F - Fuel SOV closes
How many emergency light battery packs are there? - ✔✔5 according to the FCOM, 4 according to
numerous study guides. Regardless, 6 volts each and will provide 10 minutes of lighting in an
emergency.
What are the MEL categories and action periods? - ✔✔A - time interval as specified by the MEL list
B - 3 days
C - 10 days
D - 120 days
, What is a CDL and where will you find it? - ✔✔Configuration Deviation List and it's in the AFM 08-01-01-
1
What is considered marginal weather? - ✔✔Destination weather is forecast to be less than 1,000' and
3sm of visibility AND the 1st alternate is forecast less than 600' and 2sm at estimated time of arrival. If
that's the case, a 2nd alternate is needed.
What are the derived minimums for an airport with one approach? Two approaches? - ✔✔1 approach
- add 400' and 1sm to mins
2 approaches - add 200' and 1/2sm to the highest of the two approaches. Must have different nav id's
What are the new FO limitations? - ✔✔Captain will make all takeoffs and landings when:
1) reported or actual weather is less than CAT1 mins for that runway
2) Runway is shorter than 4500'
3) Runway condition code 2 or less
4) Captain determines it's necessary
FO under 100 hours limitations - ✔✔Captain will make all takeoffs and landings when:
1) Special Use Airports
2) Visibility is less than 3/4sm or less than 4000RVR
3) Contaminated runway
4) Crosswind greater than 15 knots
5) Wind shear is reported
6) Runway condition code 4 or less
7) Any other condition capt deems prudent
GoJet's landing minimums? - ✔✔Cat 1 minimums - 200' and 1/2sm or 1800RVR
What happens when you pull the ROLL DISCONNECT HANDLE? - ✔✔The torque tube that connects the
pilot and copilots controls is separated. The pilot controls the left aileron and the copilot the right. The
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