DA42 Specific Flashcards by IMEBA / /

Max. load in nose baggage compartment in the fuselage nose

30 kg

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How is ambient air provided to the cabin?

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

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What power and speed setting is used on final approach?

30% for 82kts

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What are the gear limitation speeds?

VLOE: 194 kts | VLOR: 156 kts

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At Va what are the manoeuvring load factors?

+3.8, -1.52

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How long does gear extension / retraction take?

6-10 seconds

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

≥ 85 kts

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How much oil does the DA42 consume per hour?

0.1l /hr

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

Gearbox

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What is the main battery connected to?

HOT BUS and BATTERY BUS

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What is the structure of the DA42?

Semi-monocoque

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Minimum speed in icing conditions

121kts

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

Springs

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

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

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

25%

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

500ft AGL

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The alternator are connected to:

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

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What are the engine RPM limitations?

2300 with a max overspeed of 2500 for 20 seconds

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What speed is VMCA

68kts

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

Twisting and control adjustment

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

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

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Which is the correct combination for the initial climb?

82 kts, Power: 100%, Pitch: 8

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How many fuel injection nozzles are there per engine?

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Max. load in cabin baggage compartment behind rear seats

45 kg

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

Lower and rear edges of the pitot tube

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

Loss of the hinge pin(s) and flight safety

To unfeather the propeller, the associated ENGINE MASTER switch must be set to ON. What does this action cause?

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

What is the maximum fuel imbalance?

5 USG

Once engaged, the variable elevator backstop reduces:

2.5° to 13°

Best glide speed

82kts

What is the Standard Stall Recovery?

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

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

1785kg

What is the MZFM?

1650kg

What is the IAS and pitch angle for rotation?

IAS: 70 kts, Load: 100%, Pitch: 5°

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

≥ 1500

Speed range during icing conditions

121-160kts

What is the VFE for landing flaps?

111kts

Which fuel does the L3 Twinstar use?

Jet A-1

What nose attitude is typical for Vy or Vx

13°

What is the minimum RPM required to achieve feathering?

1300

When will the Variable Elevator Backstop engage?

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

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

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)

What is the minimum height for engine shutdown?

3000ft

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

70A

The DA42 power system is best described as what?

28V DC System

The ailerons, elevator and wing flaps are operated by

Control rods

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

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

Speed/Power setting when flying an asymmetric instrument approach

105 kts, 75% power

Maximum demonstrated crosswind limit of the DA42

20kts

The elevator is operated by

Push/pull control rods

Anti-Ice Normal mode

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

Maximum fuel uplift, including unusable

52USG

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

Switch the right fuel lever to cross-feed

Approach flap VFE

137

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

> 90kts

What is the material construction of the DA42?

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

What is the maximum operating altitude?

18000ft

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

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

What IAS is required for a Vy/Vx climb?

77kts

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

55%, 120kts

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

5.0 - 6.0lts

Name the speeds for VNO, VNE and VMCA

VNO 155 KIAS, VNE 194 KIAS, VMCA 68 KIAS

Which engines does the DA42 Twinstar use?

Thielert TAE 125-01 Centurion 1.7

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

45%

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?

Land at an airfield as soon as possible

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

105 kts, Power: 55%

The gear warning horn sounds when

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

The cabin heat and ventilation is supplied

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

What type of landing gear is fitted on the DA42?

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

What is the maximum engine restart pressure altitude?

8000ft

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

30 minutes.

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

68kts, 126kts, 155kts, 194kts

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:

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

Which engine oil is used?

SHELL Helix Ultra 5W-40

Power generation is provided by two

60 Amp alternators (generators)

Maximum prop overspeed

2500