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MEP Theory Prep > DA42 Specific > Flashcards

DA42 Specific Flashcards

1
Q

Max. load in nose baggage compartment in the fuselage nose

A

30 kg

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2
Q

How is ambient air provided to the cabin?

A

NACA inlet on the lower side of the RH center wing stub

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3
Q

What power and speed setting is used on final approach?

A

30% for 82kts

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4
Q

What are the gear limitation speeds?

A

VLOE: 194 kts | VLOR: 156 kts

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5
Q

At Va what are the manoeuvring load factors?

A

+3.8, -1.52

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6
Q

How long does gear extension / retraction take?

A

6-10 seconds

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7
Q

Your flaps fail to lower on approach, what is the speed for final?

A

≥ 85 kts

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8
Q

How much oil does the DA42 consume per hour?

A

0.1l /hr

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9
Q

Oil is required as a part of the propeller pitch control. Which system is this oil taken from?

A

Gearbox

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10
Q

What is the main battery connected to?

A

HOT BUS and BATTERY BUS

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11
Q

What is the structure of the DA42?

A

Semi-monocoque

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12
Q

Minimum speed in icing conditions

A

121kts

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13
Q

What assists the hydraulic system in locking the gear in the down position?

A

Springs

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14
Q

With the emergency switch set to ON, power is provided to:

A

The attitude gyro (artificial horizon) & the flood light for 1.5 hours

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15
Q

In a flapless circuit, what power setting is used on the base leg?

A

25%

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16
Q

At what height do you transition from the initial climb to the normal climb?

A

500ft AGL

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17
Q

The alternator are connected to:

A

Both alternators are connected to the BATTERY BUS via a 90 Amp circuit breaker.

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18
Q

What are the engine RPM limitations?

A

2300 with a max overspeed of 2500 for 20 seconds

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19
Q

What speed is VMCA

A

68kts

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20
Q

The lack of locking varnish on the flight controls is an indication of what?

A

Twisting and control adjustment

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21
Q

An alternator control unit controls load balancing across each alternator. How does this system function?

A

Loading is shifted to the alternator with the lowest internal temperature first.

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22
Q

Which is the correct combination for the initial climb?

A

82 kts, Power: 100%, Pitch: 8

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23
Q

How many fuel injection nozzles are there per engine?

A

4

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24
Q

Max. load in cabin baggage compartment behind rear seats

A

45 kg

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25
Q

Where are the static ports located in the DA42’s pitot-static system?

A

Lower and rear edges of the pitot tube

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26
Q

DA42 control surfaces make use of roll pins. Their absence can result in:

A

Loss of the hinge pin(s) and flight safety

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27
Q

To unfeather the propeller, the associated ENGINE MASTER switch must be set to ON.

What does this action cause?

A

Propeller control valve electrically opens, accumulator oil pressure released into the propeller hub.

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28
Q

What is the maximum fuel imbalance?

A

5 USG

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29
Q

Once engaged, the variable elevator backstop reduces:

A

2.5° to 13°

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30
Q

Best glide speed

A

82kts

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31
Q

What is the Standard Stall Recovery?

A

Nose Down then Power Up until symptoms cease, Wings Level, Gear Up, Flap Up, Speed Increasing? - Select Vy

32
Q

What is the maximum take off mass for the DA42 - presuming modification?fitted?

A

1785kg

33
Q

What is the MZFM?

A

1650kg

34
Q

What is the IAS and pitch angle for rotation?

A

IAS: 70 kts, Load: 100%, Pitch: 5°

35
Q

To prevent engaging propeller pitch locks engaging, pilots must ensure RPM remains ____ during shutdown?

A

≥ 1500

36
Q

Speed range during icing conditions

A

121-160kts

37
Q

What is the VFE for landing flaps?

A

111kts

38
Q

Which fuel does the L3 Twinstar use?

A

Jet A-1

39
Q

What nose attitude is typical for Vy or Vx

A

13°

40
Q

What is the minimum RPM required to achieve feathering?

A

1300

41
Q

When will the Variable Elevator Backstop engage?

A

When landing flap is selected and both engines have exceeded 20% load.

42
Q

Which of the following is correct with regard to the ECUs (multiple choice of 4)

A

The LH engine uses ECU A and the RH engine uses ECU B.
Either ECU can run both engines
There is an ECU A and ECU B for each engine and both engines normally operate using their ECU A

In the event of an ECU failure an automatic changeover to the other engine’s ECU A occurs

In the event of an ECU failure an automatic changeover to the other engine’s ECU B occurs

Answer (A)

43
Q

What is the minimum height for engine shutdown?

A

3000ft

44
Q

A circuit breaker sits in the distribution line between engine alternators and each respective bus. What Amperage is this

A

70A

45
Q

The DA42 power system is best described as what?

A

28V DC System

46
Q

The ailerons, elevator and wing flaps are operated by

A

Control rods

47
Q

What type of battery does the DA42 have and where is it stored?

A

24V 10 Amp lead-acid, in the forward baggage compartment.

48
Q

Speed/Power setting when flying an asymmetric instrument approach

A

105 kts, 75% power

49
Q

Maximum demonstrated crosswind limit of the DA42

A

20kts

50
Q

The elevator is operated by

A

Push/pull control rods

51
Q

Anti-Ice Normal mode

A

System pumps 1 and 2 operate alternately, each cycling 30 seconds “on” and 90 seconds “off”

52
Q

Maximum fuel uplift, including unusable

A

52USG

53
Q

You experience a fuel issue with the right engine, this will require cross-feeding fuel. What is the correct selection?

A

Switch the right fuel lever to cross-feed

54
Q

Approach flap VFE

A

137

55
Q

According to L3 SOPs, airspeed must be attained before attempting an engine restart in the air?

A

> 90kts

56
Q

What is the material construction of the DA42?

A

Carbon-fibre Reinforced plastic (CFRP) with Glassfibre Reinforced Plastic (GFRP) bulkheads and stiffeners

57
Q

What is the maximum operating altitude?

A

18000ft

58
Q

Why is the emergency battery for the standby attitude indicator/gyro wirelocked?

A

To indicate that it has not been used since last checked.

59
Q

What IAS is required for a Vy/Vx climb?

A

77kts

60
Q

Prior to configuring for a landing, what speed is the downwind section of the visual circuit flown at?

A

55%, 120kts

61
Q

What are the minimum and maximum oil levels, according to L3 SOPs?

A

5.0 - 6.0lts

62
Q

Name the speeds for VNO, VNE and VMCA

A

VNO 155 KIAS, VNE 194 KIAS, VMCA 68 KIAS

63
Q

Which engines does the DA42 Twinstar use?

A

Thielert TAE 125-01 Centurion 1.7

64
Q

What is the power setting for the base leg in an asymmetric circuit

A

45%

65
Q

During engine trouble shooting drill following loss of power of an engine, the engine power was restored by selecting ECU B.

What course of action should you take?

A

Land at an airfield as soon as possible

66
Q

What power/speed setting is required for an instrument approach?

A

105 kts, Power: 55%

67
Q

The gear warning horn sounds when

A

Power in any of the two levers is set below 20% load, and the gear is up

68
Q

The cabin heat and ventilation is supplied

A

RH engine for seats and floor, LH engine for canopy, fresh air from underside right wing

69
Q

What type of landing gear is fitted on the DA42?

A

Fully retractable, tricycle landing gear with gravity assisted extension and hydraulically operated retraction

70
Q

What is the maximum engine restart pressure altitude?

A

8000ft

71
Q

In the event of a total power failure, how long can it be expected that critical services will last for once disconnected?

A

30 minutes.

72
Q

The speeds for VMCA, VA, VLE and VNE are?

A

68kts, 126kts, 155kts, 194kts

73
Q

During cruise checks you notice a degradation of performance in one of your engines. Fuel is OK, Ts & Ps indicate normal and the temperature outside is -3°C. You have been in and out of moisture but can not see a build up of ice on your wings. Your action is:

A

Switch to alternate air, the manifold is likely blocked with ice. Remain clear of icing.

74
Q

Which engine oil is used?

A

SHELL Helix Ultra 5W-40

75
Q

Power generation is provided by two

A

60 Amp alternators (generators)

76
Q

Maximum prop overspeed

A

2500

MEP Theory Prep (2 decks)

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