41st Smart Book Flashcards
Slipstream Effect
Thrust Generated by the propeller that creates a corkscrew slipstream that strikes the wing root fuselage and tail surfaces
P-Factor
Effect of Propeller- AOA is higher on the downward blade than the upward blade causing the A/C to yaw left
Torque
Torque Reaction acts opposite the direction of propeller rotation. (T-6 tends to roll to the left when power is increased, Right when power is decreased)
Gyroscopic Effect
When a force is applied to displace a spinning mass, the force acts on a plane 90 degrees from which it is applied
Adverse Yaw
Tendency of an A/C to yaw away from the direction of aileron input
How long is a Preflight Inspection valid for?
72 hours if not flown. 6 hours if flown
When is a Thru-Flight (TH) inspection conducted?
Between flights if A/C will fly again that day.
When is a Basic Postflight Inspection (BPO) conducted?
After the last flight of the day
What does a ‘Red X’ on a 781 mean?
Unsafe/Unfit for flight. (Only a designated MX Sup can initial over the X).
What does a ‘Red -‘ on a 781 mean?
Overdue inspection, not necessarily grounded, but may not be fit for flight
What does a ‘Red /’ on a 781 mean?
Minor Discrepancy (Minor maintenance needed, but OK for flight)
When is an exceptional release required?
Always required prior to flight
Who may issue an Exceptional Release?
MX officer or Sup- ER good for the whole day
Rated Pilot- ER is good for that flight only
When are dated inspection due in the 781?
At the end of the day
How long are tire pressure checks good for?
Good for that day
How long is an oil change valid for?
Each phase
When are inspections based on flying time due?
At the end of the flight on which the time is exceeded
What is the length of the T-6?
33’4”
What is the wingspan of the T-6?
33’5”
What is the height of the T-6?
10’8”
What is the prop arc of the T-6?
97”
What is the max T/O weight of the T-6?
6500 lbs
What is the basic empty weight of the T-6?
4900 lbs?
T-6 Engine and Horsepower?
PT6A-68 free-turbine turboprop
1100 Shaft Horsepower (SHP)
External Power is required between what voltage range?
24-29V
Don’t connect external power below what voltage?
22.0V
At what N1 do the starters and igniters deernergize?
~50% N1
During start at what PSI does the boost pump deactivate (BOOST PUMP light out)?
10 PSI
PCL is advanced to idle past 2 quicks any time N1 is greater than?
60% N1
Manually Abort Start if….
BAT BUS annunciator illuminates, PCL is moved, or ST READY annunciator extinguishes during the start sequence
How many fuel tanks are in the T-6, where are they located, and how much do they each hold?
Left Wing- 527 lbs
Right Wing- 527 lbs
Collector Tank- 47 lbs
What is the TOTAL usable fuel of the T-6?
1200 lbs
What is the usable fuel for single-point pressure refueling?
1100 lbs
What is the usable fuel for over-the-top wing refueling (left tank must be fueled first)?
1200lbs
The FUEL BAL light comes on with an imbalance of >____ lbs for more than ___ minutes?
30 pounds, 2 minutes
What is the normal pressure in the motive flow line?
10 PSI
The boost pump activates if pressure drops below ___PSI in the motive flow line?
10 PSI
Where is the boost pump located?
collector tank
The primary jet pump keeps flow above ____PSI after engine start?
10 PSI
How many jet pumps are in each wing tank?
2
What keeps pressure in the fuel lines after engine start?
Venturi Flow
How many drain valves are in each wing tank?
1
How many external gravity filler ports are in each wing?
1
What is the boost pump powered by?
Battery Bus
When is the fuel auto-balance activated?
20 lbs for 30 seconds
How long will the Flip-Flop Valve maintain fuel flow during inverted flight?
At least 15 Seconds
What are the three fuel probe positions and how what amount of fuel does each detect (and the optic sensor)?
Outer- Full, 445 +/- 50 lbs
Middle- 308 +/- 50 lbs
Inner- 20 lbs per side and collector tank
Optic Sensor at 110 lns
What are the three fuel probe positions and how what amount of fuel does each detect (and the optic sensor)?
Outer- Full, 445 +/- 50 lbs
Middle- 308 +/- 50 lbs
Inner- 20 lbs per side and collector tank
Optic Sensor at 110 lns
What are the three fuel probe positions and how what amount of fuel does each detect (and the optic sensor)?
Outer- Full, 445 +/- 50 lbs
Middle- 308 +/- 50 lbs
Inner- 20 lbs per side and collector tank
Optic Sensor at 110 lbs
L or R Fuel Low Annunciator
If the Low Pressure Fuel Pump fails, how long can the high pressure pump be used in its place
Up to 10 Hours, Fuel PX annunciator comes on
True or False: if the high pressure fuel pump fails, the engine will fail.
True
If the Low Pressure fuel pump fails and the oil scavenge pump fails what annunciators will illuminate?
Red and Amber Oil PX annunciators
When do the fuel quantity arrows turn yellow on the AEDD?
<150lbs
How much oil does the oil system hold?
18.5 qts
How long after engine shutdown must the oil level be serviced?
Within 30 minutes after engine shutdown
Oil level indicator may display less than or equal to _____ qts of oil with engine off
4 PSI
when does the Red Oil PX annunciator illuminate?
15-40 PSI above idle
less than or equal to 15 PSI at idle
When does the amber oil PX annunciator illuminate?
15-40 PSI at idle
40-90 psi after 10 sec above idle
What components are powered through the Hot Bat Bus
BEFORE TIME
Battery Switch, ELT, FDR, OBOGS, Ram Air Switch, Emergency Flaps, Clock
What components are powered through the Battery Bus?
EADI, Trims and TAD, FCP EFIS, Bleed Air Inflow (Capin PX), Normal Gear and Flaps, ICS, GPS, Airstart, Primary UHF
What components are powered through the Aux Battery?
SLUF
Standby Instruments, Lights for Standby Instruments, UHF Backup, Fire 1
What components are powered through the Generator Bus?
EHSI, RCP EFIS, All displays except AEDD, A/C, RMU, VHF Comm & Nav, TAD, Tones, Transponder
What approaches can be flown with systems found on the Battery Bus?
VOR, Radar, and Form Approach
What approaches can be flown with systems found on the Generator Bus?
GPS, Radar, and Form Approaches
How many volts and amps does the Starter/Generator supply?
28 VDC / 300 Amps
What is the minimum voltage the Generator needs to supply to charge the battery?
25 VDC
How many volts and amp-hours does the battery supply?
24 VDC / 42 amp-hour
The battery powers all systems except the?
Air Conditioning
What provides power for engine starts?
The battery
How long can the battery power only BAT BUS items?
Minimum 30 minutes
What is the voltage and amp-hours of the Aux Bat?
24 VDC, 5 amp-hour
What switch controls external power?
the BAT Switch
What are the acceptable voltage ranges to connect external power?
24.0 - 29.5 VDC
Do not connect external power if battery voltage is less than ____ Volts?
22.0 Volts
