PA44 december test Flashcards
Drift down definition
Lose of alt due engine fail above SE absolute ceiling
VSSE defined by FAA/manufacturer? and speed
Definition: Intentional One Engine Inoperativeairspeed, min speed practicing single engine for training purpose (82 kt)
Defined bymanufacturer
Engine oil pressure range
Max and min oil pressure: 25-115psi
. Complete oil loss in one engine, what should you do?
Affected engine: minimal power
V speed, Red line lower end
Vmca - Minimum control speed with critical engine inop (56kt)
Which speeds cannot be determined by the colour code on ASI:
: Va (MTOW 3,800lbs: 135kt)
Alternator output
14-volt, 60/70 amp (Max 100-amp
. Battery
12-volt 35 amp located in the nose of AC (Depend on the load. If you use 35 amp continuously, it last 1 hour. If you use 70 amp continuously, it last 1/2 hour)
Fuel grade:
100LL (blue) & 100 (green)
What indication when gears are down and locked:
3 green
Shuttle valve purpose
regulate the flow of hydraulic fluid (Google: allows fluid to flow through it
from one of two sources)
Door opened during take off, what should you do?
Partial open door will not affect normal flight characteristics
. When OEI climb Performance?
reduced at least 80% (80-90%)
Manual flight controls
by pulley and wires
VLE definition :
Max Gear extended speed ( 140 kts )
Vxse
Best Angle of climb speed (82)
Flaps type ?
Slotted
Ailerons type
Differential frize, help with adverse yaw
Alternator over voltage relay purpose ? (7.17)
Function similar to circuit breaker, it will disconnect alternator when voltage >17V,
Pilot will see ALT light illuminated and you can turn it off for 1 sec to reset. Operative alternor output should
not exceed 60 amps
Annuciator panel - Low bus illuminate - meaning ?
Bus voltage (14 Vdc) drops to approximate battery voltage (12.5 Vdc) or below, could be alternator not
working ?
landing gear systems
1) The pump is located behind the Cargo area ( Behind Baggage compartment )
2) Hydraulic actuated
3)
4)All correct
Have a shuttle valve within the system
The seminole has a tricycle, hydraulically actuated, fully retractable landing gear
Which statement is not true for the landing gear in PA44 ?
Not fully retractable gear
How pilot maintains engine settings in PA 44 ?
Governor control the propeller pitch
Feathering lock (2)
Prevent feathering below 950 rpm (shutdown engine)
Help starter motor starting engine on ground
Number of vent in fuel systems
6
If one engine fails, loss of directional control, what can you do ?
Reduce thrust of the operating engine
Why the heater cannot install around the exhaust manifold
Because those engines are located on the wing (it actually located on the right side of the nose)
Heater fuel burn:
1/2 Gal per hour, use the fuel from the left ( Heater WILL FUNCTION with left fuel selector in either ON or
X feed position )
Number of fuel pump:
5-6 Each engine has an engine driven pump
Each side will have electric pump
The janitors combustion heater either 1 or 2 pumps
Counterweight on ailerons:
Prevent fluttering at high speed
Anti-servo tab on the stabilator:
Prevent over controlling
Positive pressure tab on the rudder trim:
Prevent fluttering on the trim tab (Prevent any slack (play))
Anti ice feature on PA44 :
Pitot heat is Anti Ice
Counter rotating prop
Propeller rotate opposite from each other.
Left engine:clockwise , right engine: counter clockwise
All of the above
VLO (up)
VLO (down)
emergency speed
VLO (UP): Maximum landing gear retraction speed : 109 kts
VLO (DONW): Maximum landing gear extension speed : 140 kts
Emergency landing gear extension speed : 100 kts or less
VNE definition
Never exceed speed, maximum structural cruising speed : 202 kts
Where the emergency extention gear handle is located
Left of the gear handle (red knob, need to pull to release pressure)
4 Factors to determine critical engine ?
P-Factor (Yaw)
Accelerated Slipstream (Roll)
Spiraling Slipstream (Yaw)
Torque (Roll)
Why the left is critical ? (which one is false)
A critical engine is the engine that more adversely affect fligth when inoperative
Why Right engine is L-0360
Because turning left, counter clockwise, left engine is turning right, clockwise
Why RPM don’t drop when have Carbu ice
Constant Speed Prop
MTOM / MRAMP / MLM
MTOM : 3800 lbs
MRAMP : 3816 lbs
MLM : 3800 lbs
Different V speed and definition
VSO : 55
VS1: 57
Vmc: 56
Vr (short) : 70
Vr (normal) : 75
Vref (short) :75
Vref (normal) : 80
Vx / Vyse / Vsse : 82
Vy / Vyse : 88
VLO (UP) : 109
VFE : 111
Va : 3800 ( 135) 2700 ( 112)
VLO (DOWN) : 140
Vno : 169
Vne : 202
Will brake system work if landing gear system fails ? Yes, they are separated system
The governor controls the oil pressure in/out of the reservior so that it can control the blade angle to
compensate for the over/underspeed situtations
Unfeathering actuator
how many on each engine
stores what
Each engine will have one unfeathering accumulator.
It stores 90 psi nitrogen so during flight the pilot need to just put the blue levers forward and this can cause the
oil that stored under pressure be sent to the hub to pushing the propeller out of the feather position.
Once the engine is running and have its own oil pressure then the pressure will recompress and recharges the
accumulator for another use.
More oil in the hub will make the blade ?
decrease the pitch of the blades , increase rpm
Vmc flight test conditions:
SMACFUM G
Standard day
MAX Power
Aft CG
Critical Engine
Flaps/Gear Up
Up to 5 deg bank
Most unfavourable weight (light weight)
Ground effect ( out of ground effect)
Seminole engines:
Lycoming (180 BHP , 2700 RPM)
Horizontally opposed
Air Cooled
Naturally Aspirated
Direct Drive
Three things to assist in moving the propeller high pitch,
low RPM
The spring of the hub
The nitrogen gas (41 psi)
Counterweight
Gear unsafe horn
Gear up while on ground
Flap more than 10 and gear not down
Below 14 MP and gear not down
Landing gear switches
Up limit switches: there is one for each wheel, when all three engaged, then the red light unsafe will shut off.
Turn off heater blower.
Downlock switches: one for each wheel, deactivate the reverse polarity pump (has to be all three engaged),
turn on the green light and shut off the red light and gear horn.
Squat switches: one for each main wheel (weight on wheel concept)
Left side: Prevent the gear retract when the plane on the ground.
Right side: Disable the stall warning horn, disable the mx hour counter (hobbs)
. Blue line speed:
Vyse 88kt (single engine inoperative best rate of climb speed)
. Red line speed:
Vmca 56kt (single engine inoperative air minimum control speed)
What keep landing gear down?
Downlock hook, Down Over-centre lock supported by spring and finger hook
Cabin door:
2 latched, can land with door open (3-37)
Vy definition
Best rate of climb (88kt, Vx = 82kt)
. Engine cooling by?
Engine oil, air cooled, fuel cool ??
if gear in transit, what indication?
Red WARN GEAR UNSAFE light
Vacuum System
: 4.8 - 5.2 Hg
What drives fuel pumps?
Engine driven and electrical motor
What is bus bar? Location?
Bus bar is a piece of metal used for the distribution of the electricity.
It simplifies the wiring. It is located behind the circuit breaker
Electrical bus
6 electrical buses that distribute power to electrical
equipment
Engine Model
Right Engine……………L0-360-EIA6D (turning counter-clockwise from the cockpit)
b. Left Engine ……………..0-360-EIA6D
Why Right engine is L-O360
: because it turns left, anti-clockwise
Reason of “Lo bus” light on:
: Alternator low current
How Oil pressure affect blade angle:
: Lever forward = oil decreases from hub = blade angle decreases
= engine RPM increases
Accelerating slipstream:
more lift on operating engine
Spiralling slipstream
: left engine fail = roll left, yaw left
What is the function of the recessed vent?
a vent that allows only air to flow through to prevent any blockage due to ice formation in the fuel vent line
Hub nitrogen pressure
Accumulator
41psi
90psi
