DA-42 TDI & CPL Flashcards
Va above 1542kg?
126 KIAS
Va up to 1542kg?
120 KIAS
VFE Landing
111 KIAS
VFE Approach
137 KIAS
VLO Extension
194 KIAS
VLO Retraction
156 KIAS
VLE
194 KIAS
VMCA
68 KIAS
VNO
155 KIAS
VNE
194 KIAS
Maximum propeller RPM
2300 RPM
Maximum overspeed RPM
2500 RPM for 20 seconds
Minimum and Maximum oil pressure
1 - 6.5 Bar
Minimum and Maximum oil quantity
4.5 - 6.0 Litres
Maximum oil consumption
0.1 litres/hour
Engine minimum and maximum voltage
24.1V - 32V
Prop pitch angle range
12-81
Restart airspeed?
Below 90 KIAS
Minimum flight mass
1250kg
maximum take off mass
1785kg
MZFM
1650kg
MLM
1785kg
Max load in nose baggage compartment
30kg
Max load in cabin baggage compartment
45kg
Max load in baggage extension?
18kg
Max load in cabin baggage and baggage extension together?
45kg
Positive and Negative load at Va
+3.8 and -1.52
Positive and Negative load at Vne
+3.8 and -0.0
Positive and Negative load with flap in APP and LDG?
+2.0
maximum operating altitude?
18,000ft
Main tank total fuel quantity?
26 US Gal per tank
Main tank usable fuel quantity?
25 US Gal per tank
Aux tank total fuel quantity?
13.7 US Gal per tank
Aux tank usable fuel quantity
13.2 US Gal per tank
Fuel Temperature permitted range?
-30 to +75
VS1
64 KIAS
VS0
57 KIAS
Full elevator deflection angle before and after backstop?
15.5 reduced to 13
When is the variable backstop initiated?
When 20% power is set on the power levers and the flaps are int he LDG position
How are the ailerons and elevators operated?
Push Rods
How are the flaps operated?
electrically by push rods
How is the rudder operated?
Bowden cables
Prop start lock position
15-degrees
Maximum restart altitude
8000ft
Maximum restart attempts in the air?
3
Propeller speed reduction ratio
1:1.69
How is propeller pitch controlled?
Gearbox oil
Oil pressure up = pitch down = RPM up
Oil pressure down = pitch up = RPM down
What must the RPM be above for the engine to feather the prop?
1300 RPM
How is electrical power generated?
2 x 60Amp 28V Alternators
How is electrical power stored?
1 x 10 Amp 24V DC Lead Acid battery
Dihedral Angle
5-degrees
What Antennas are on the bottom of the aircraft?
Com 2, DME, ADF, Transponder
What antennas are on top of the aircraft?
ELT, Com 1, GPS
What antennas are on both the top and bottom of the aircraft?
TAS Traffic Avoidance System
What engine provides Defrost and Heat?
Left provides Defrost, Right provides Heat
What is the max difference between each main tank and each aux tank?
5 US GAL
Max Crosswind component?
20 Knots
Max crosswind in icing conditions?
20 Knots
What does the emergency switch power and for how long?
Flood lights and standby artificial horizon for 1.5 hours
VYSE
82 KIAS
VYSE (Ice)
88 KIAS
VOPS Ice
121-160 KIAS
Wingspan
13.55m including Strobe
Length
8.56m
Height
2.49m
Leading edge sweep
1-degree
Wing aspect ratio?
11.06
Track distance
2.95m
Engine manufacturer?
Thielert Aircraft Engines
Engine max power?
99kW
1700kg VREF Flap Up, APP, LDG
85, 82, 76 KIAS
1785kg VREF Flap Up, APP, LDG
86, 82, 78 KIAS
VR up to 1700kg
70 KIAS
VR above 1700kg
72 KIAS
Vx and Vy up to 1700kg
77KIAS
Vx and Vy above 1700kg
79KIAS
Describe the Fuselage and Empennage
The fuselage and empennage is CFRP of semi monocoque moulded construction
Describe the construction of the Ailerons, Elevators and Rudder.
GFRP composite sandwich construction
At what temperature does the Fire Detection System activate?
250-degrees Celsius
What does the protection fluid act as?
A freezing point depressant
What happens when moisture in the air mixes with the ‘Freezing point depressant’?
The freezing point of the mixture reduces slow the ambient temperature
What are the two application types in the ice protection system?
Spray Nozzles and Porous skin panels
What is the normal freezing point of the glycol fluid?
-12 degrees celcius
What is the freezing temperature range once the glycol is mixed with water?
-22 to -40 degrees celsius
Describe the ‘Normal’ Mode of the icing system
2 pumps run simultaneously, but cycle 30 seconds on and 90 seconds off
Describe the ‘High’ Mode of the icing system
1 pump is on continuously
Describe the ‘Max’ mode of the icing system
2 pumps on for 2 minutes simultaneously
What is the typical operating time in Normal Mode
around 2.5 Hours
What is the typical operating time in High Mode
around 1.0 hours
What is the typical operating time in Max Mode
around 0.5 hours
Describe the windshield protection system
Only 1 pump operates at a time, operates for 5 seconds per operation
What happens when the Alternate switch is selected?
When the alternate switch is selected, pump number 2 is connected directly to the right hand main bus, the system operates in high mode only when the alternate switch is selected
Describe the ice protection system
From the main tank there is two independent systems. One for the windscreen and the other for the airframe and prop. Each of the two independent systems have 2 pumps each. The system is ‘normally’ powered by the LH main bus
When is an aerodrome traffic zone radius 2NM?
When the longest runway is shorter than 1850m
What is the maximum altitude parachuting sites are able to operate?
FL150
What is the maximum altitude glider sites can winch up to?
2500FT
What is the freezing and flash point of Jet A1?
Freezing: -47 Flashpoint: 38
The additional yaw which defines the critical engine is caused by?
Asymmetric blade effect
When the throttle is brought to idle on an asymmetric landing which direction will the aircraft yaw?
Towards the working engine
In an asymmetric climb with 5-degrees bank to the live engine, the balance ball should be?
Approximately 1/2 ball width towards the live engine
How long should the starter motor operate for? how long should it be left to cool after each attempt?
10 seconds and left to cool for 20 seconds after each attempt
Max number of start attempts before allowing the starter to cool? How long should it be left to cool for?
Maximum 6 attempts before leaving for 30 minutes to cool
the trend vector on the PFD displays shows the figure that will be reached in how many seconds?
6 seconds
Cabin heating and ventilation is supplied from?
RH engine for seats and floor, LH engine for canopy, fresh air from underside of the right wing.
Convert IAS to TAS?
TAS= IAS +2% per 1000ft
What is the difference between gross and net performance?
Gross: What you can reasonably expect to achieve on the average day
Net: Gross performance reduced to ensure an acceptable level of safety
Minimum climb gradient all engines operative?
4% at screen height
minimum climb gradient with one engine inoperative at 400agl and 1500agl?
400agl: measurably positive
1500agl: 0.75%
minimum climb gradient on the missed approach/ go around?
0.75% at a speed no lower than 1.2 Vs1
What is the weather minima for destination and alternate at this ATO?
More than 5km Vis
ceiling 2000ft or circling +500ft (whichever is higher) within +/-1 hour of ETA
What conditions cause Haze?
Haze often occurs when dust and smoke particles accumulate in relatively dry air. When weather conditions block the dispersal of smoke and other pollutants they concentrate and form a usually low-hanging shroud that impairs visibility.
What causes mist?
Mist is tiny droplets of water hanging in the air. These droplets form when warmer water in the air is rapidly cooled, causing it to change from invisible gas to tiny visible water droplets
what causes fog?
Fog forms when the difference between air temperature and dew point is less than 2.5 °C. Fog begins to form when water vapor condenses into tiny liquid water droplets that are suspended in the air. … This occurs from either added moisture in the air, or falling ambient air temperature
What are the types of icing you can encounter in cloud, precipitation and clear air?
hoar frost, Rime ice, clear ice
Describe Hoar Frost
Direct sublimation of water vapour from the air. Firry, white and brittle. Most commonly forms on cold surfaces, either on the ground or during descent after a prolonged period of cold soaking at altitude
Describe rime ice
Small SCWD which freeze instantly trapping air. White or milky white and brittle. Builds forwards. Found in stratiform clouds.
Describe Clear Ice
Large SCWD which freeze slowly. Clear transparent, dense and tough. Found in cumuliform clouds.
What is the minimum RVR single crew?
800m unless using an AP with ILS or MLS in which case normal minima apply as long as the DH is not less than 250ft
What does a turn coordinator measure? What does It display?
It measures rate of roll and yaw
It shows rate of turn and shows whether you are in balance.
Where can you find the list of documents required to be carried in flight by a UK aircraft public transport?
EU OPS subpart B
How many air sources are the to feed the turbocharger system?
2
- Engine air inlet
- Alternate air inlet
how does the ECU calculate the correct setting of the waste gate?
Manifold pressure sensor behind the compressor
When does the DEIC LVL LO annunciation illuminate?
Below 10L, which provides around 45 minutes in NORM mode
Where do the RH and LH main busses connect to?
RH main bus and LH main bus connect to the battery bus through a 90Amp circuit breaker
How long does gear extension take?
6-10 seconds
What engines are installed on L3 DA42?
Thielert Engine. 2.0L 99kW, 135hp
What materials are used to construct the blades of the prop?
wood composite blades with fibre-reinforced plastic coating and stainless steel edge cladding
Autopilot airspeed limiting range?
90 -185 KIAS
Factor for wet and dry grass on take off distance?
x1.2 and x1.3
Take off factor for a paved wet runway?
x1.0
Factor applied for upslope on take off?
5% for every 1% of upslope
Factor applied for downslope on landing?
5% for every 1% of downslope
What must the landing distance from screen height not exceed?
70% of the landing distance available or a factor of 1.43
What landing factor must be applied to a landing on a wet paved runway?
x1.15
What is performance Class B?
Aircraft with 9 or less passenger seats and a MTOW of 5700kg or less
CPL Hour Requirements
Dual: 80hr (5 ground time)
PIC: 70hr
XC: 20hr PIC including 300NM QXC with 2 Full stop landings at airports other than the starting point
Night: 5 Hours (3 Dual, 1 Nav, 1 solo with 5 circuits)
Instrument: 10 hours (5 Ground)
Aircraft certified for at least 4 people, variable pitch prop and retractable gear: 5 Hr
What is a warm occlusion?
A warm occlusion will occur if the cold air behind the occlusion is warmer than the cold air in front of it
What is a cold occlusion?
A cold occlusion will occur if the cold air behind the occlusion is colder than the cold air in front of it
What is the form of the earth?
Oblate Spheroid
Model of the earth used in CAA Charts?
WGS84
Uk CAA Chart Projection
Lambert Conformal Conic Projection
Why is there no deviation correction required on the G1000?
Because there is a magnetometer (flux detector) installed
What is an agonic line?
An imaginary line on the earth’s surface connecting the north and south magnetic poles and passing through those points where there is no magnetic declination and where a freely suspended magnetic needle indicates true north
Describe the materials used to construct the engine firewall
Fire resistance matting, covered on the engine side by stainless steel
Describe Buys Ballot’s Law
If one stands with their back to the wind, in the northern hemisphere the atmospheric pressure will be lower on their left
Describe Coriolis Force
Due to the earths rotation we experience an apparent force known as Coriolis Force. This deflects the direction of the wind to the right in the Northern hemisphere and to the left in the southern.
What type of SCWD can be found 0 to -20 degrees?
Both large and small supercooled water droplets
What type of SCWD can be found -20 to -40 degrees?
Small supercooled water droplets can exist
What type of SCWD can be found below -40 degrees?
Most droplets have frozen. Some very small droplets can remain in the liquid phase.
Characteristics of a Forward CG?
- Increased Fuel Consumption
- Higher Stall speed
- Higher Stability
- Lower Controllability
- Harder to flare when landing
Characteristics of an Aft CG?
- More efficient
- Lower stall speed
- Lower Stability
- Higher controllability
- Requires lots of input
What is washout?
Washout is when the wing tip has a slightly lower angle of attack than the root of the wing. This ensures that during the stall the roots will stall first ensuring the pilot is given the classic symptoms before entering the full stall. By stalling the root first there is still lots of controllability in the ailerons.
by reducing the angle of incidence at the wind tip there is a reduction in wing tip vortices, therefore a reduction in induced drag.
How can you reduce the angle of attack at the wing tip?
Washout and Camber change
