Stall Warning/Gearbox/Coolant/General

Question 1

What are the Pitot-Static instruments?

Answer 1

Altimeter, VSI, ASI

Question 2

What is the noise you hear when the Electric Master is switched on?

Answer 2

The electrically driven hydraulic gear pump activates for 5-20secs to restore system pressure

Question 3

What performance class does EASA classify DA42?

Answer 3

Performance Class B

Question 4

Gearbox Max temperature?

Answer 4

Max 120degC

Question 5

What happens and should you do if the gearbox tempersture exceeds the max?

Answer 5

Greater than 120degC can lead to a total loss of power due to engine failure.

• > Reduce power on affected engine
• > Increase airspeed

Question 6

What Gearbox oil is used?

Answer 6

Shell

Question 7

Coolant Min and Max temperature?

Answer 7

Min -30degC

Max +105degC

Question 8

What is the coolant freezing point?

Answer 8

-36degC

Question 9

What Stall warning device is used?

Answer 9

Electrical flapper switch (lift detect vane)

Sounds before reaching critical angle.

Question 10

Where is the stall warning device fitted?

Answer 10

LE of left wing

Question 11

What does the Stall warning sound like?

Answer 11

Continuous audible warning just before critical angle.

Question 12

Is the Stall warner heated?

Answer 12

Yes, by the Pitot heat switch

Question 13

What does the Alternate static source sense?

Answer 13

Cabin pressure

Question 14

What instruments receive pitot-static pressure?

Answer 14

ASI
VSI
Altimeter

Question 15

How is the standby attitude indicator powered?

Answer 15

Electrically powered

Or Dry battery powered when Emergency switch ON.

Question 16

What does TODA include?

Answer 16

Runway distance + clearway (50ft obstacle clearance)

Question 17

What increases TODA? x5

Answer 17

Deviation from procedures
Uneven runway
High temperature 
Rain
Unfavourable Wind

Question 18

What does TORA include?

Answer 18

Runway distance

Question 19

What increases TORA?

Answer 19

Wet ground

Question 20

Formula to work out Gradient %

Answer 20

Gradient % = ROC(fpm) / TAS(KTAS) x 0.95

Question 21

Average climb angle for 5.25% gradient?

Answer 21

3.0deg climb angle

400ft/min

Question 22

For a safe landing, what should the available landing runway be?

Answer 22

Landing distance over a 50ft obstacle

Question 23

What increases landing distance? x7

Answer 23

Poor maintenance condition
Deviation from procedures
Uneven runway
High temperature
Rain
Unfavourable wind inc crosswind 
Wet ground