Ground check and pre-take off

Question 1

Why do we do this check?

Answer 1

2 reasons:

Check engines
Prepare acft for takeoff

THIS IS A MEMORY CHECKLIST

Question 2

When is it necessary to say it?

Answer 2

Once we arrive at the holding point of the rwy in use

Question 3

Should we turn the acft?

Answer 3

Yes, into the wind, with an angle no more than 45º
Must always do this if the wind is greater than 10 kts
In any other case:
Orient acft so that we have the final approach in sight

Question 4

How many steps are there in this check?

Answer 4

16

Question 5

1

Answer 5

Parking brake: SET

Question 6

2

Answer 6

Taxi light: OFF

Question 7

3

Answer 7

Engine parameters within normal limits (we should not begin check until engine oil temperature is in the green arc)

Question 8

4

Answer 8

Mixture: FULL RICH

Question 9

5

Answer 9

Throttles: 1900 RPM

Question 10

6

Answer 10

Check smooth operation of the engine with the left and right magnetos:

Maximum drop of RPM in each case should not be more than 150 RPM,

Maximum difference between magnetos should not be more than 50 RPM

Question 11

7

Answer 11

Propeller COARSE - PITCH - FWD

Maximum drop of 300 RPM when checking the props, at least three times to allow a correct oil mixture in the governor.

Use three movements to check:

- feathering of the propeller:
     - RPM's drop,
     - MAP of the engine rises
     - Slight indication of a drop in oil pressure and that no oil has been lost by the governor unit of the engine

Then move propeller control lever back to its initial position

Repeat this with the second engine

Question 12

7

Answer 12

Check alternate air of the engines. This verifies engine do not suffer because of bypassing the air filter.

- Select the alternate air level of each engine in the ON position for a few seconds
- Return them to the OFF position before takeoff

Question 13

8

Answer 13

Check correct operation of alternators and ammeters

• Disconnect one of the alternators and check that the ammeter fails to indicate a drop in the same alternator you are checking, and that the other alternator is taking the load (max 60 Amps)
• Check annunciator warning panel lights of GEN or ALT are on, then reconnect the alternator and check the power consumption and that the warning light goes out.
• Repeat this process with the other alternator.

Question 14

What do you do in order to not damage the alternators?

Answer 14

the first flight of the day we will check the ammeter by increasing the eletrical charge:
- turning on the landing lights and pitot heat, check how the increased indications affect the ammeters

Question 15

9

Answer 15

Vacuum pressure within limits:

4-5 and 5 2 ‘’ of Hg and that neither of the red lights appear and that the two pumps work correctly

Question 16

10

Answer 16

Check that the engine parameters are within their normal limits

• EGT
• Oil pressure
• Oil temperature and fuel flow

Question 17

11

Answer 17

Adjust throttles on both engines to 1000 RPM

Question 18

12

Answer 18

Check correct movement of the propeller:
- Move level back to the rearmost position (into the feather area)
- Wait a few moments to check that the revolutions drop below 800 RPM’s (do not let the revolutions drop more than 300 RPM and then return to level to the “FULL FORWARD”.
- If you need to help to advance the propeller, add a bit of power

Question 19

13

Answer 19

Drain the pressure lines (take care not to block the exit) for around 5 seconds or until the pressure arrives at 25’’

Question 20

14

Answer 20

Check engine iddle (between 600-800 RPM)

Question 21

15

Answer 21

Adjust throttle to 1200 RPM

Question 22

What checklist do we read after?

Answer 22

GROUND CHECK CHECKLIST

Question 23

What do we do after the ground check and completing the checklist?

Answer 23

We begin the pre takeoff

Question 24

What order does the pre take off scan flow follow?

Answer 24

• Take off briefing completed. Two parts:
  
  • normal take off briefing
  • emergency or abnormal operation briefing

Question 25

How many steps do we have to complete?

Answer 25

20

Question 26

1

Answer 26

Flaps takeoff position:

• 0º or 25º
  0º is for normal takeoff
  25ºis recommended in certain short field takeoff

Question 27

2

Answer 27

Check both front and rear doors are closed and secure

Question 28

3

Answer 28

Check that both fuel selectors are in the ON position

Question 29

4

Answer 29

Trim adjusted for takeoff

Question 30

5

Answer 30

Mixture FULL RICH

Question 31

6

Answer 31

Propeller levers are set in maximum RPM (FULL FORWARD)

Question 32

7

Answer 32

Alternate air OFF

Question 33

8

Answer 33

Cowl flaps A/R according to the temperature (normally open for the takeoff

Question 34

9

Answer 34

Magnetos in ON and with the guard down

Question 35

10

Answer 35

Check that the auxiliary fuel pumps are off. (Checking that the switches are in the OFF position, that all warning lights of the AUX and FUEL PUMP are out

Question 36

11

Answer 36

Altimeter(s) checked with the QNH of the airfield and X-CHECK

Question 37

12

Answer 37

HSI slaved and heading corresponds to compass

Question 38

13

Answer 38

In all instrumental flights we will then obtain take off clearance

Question 39

What do we do once we’ve performed all of the above?

Answer 39

Ask for takeoff clearance from the tower and once it has been authorized, perform the following checks when entering the rwy

Question 40

1

Answer 40

Check that final is free

Question 41

2

Answer 41

Check once more that the flight controls are full and free

Question 42

3

Answer 42

Turn on the landing and strobe lights

Question 43

4

Answer 43

Turn the pitot heat ON if required

Pitot heat should always be used when the outside temperature is 10ºC or below and visible moisture exists. Selection of pitot heat should be made just before takeoff, so as to not cause overheating

Question 44

5

Answer 44

Transponder set in “ALT”

Question 45

6

Answer 45

Takeoff time is noted