Flight Computer calculations

Question 1

Ground Speed 95 kt
Time Interval 47 min
Distance:

Answer 1

74 nm

Question 2

Time Interval 52 min
Distance 113 nm
Ground Speed:

Answer 2

130 kt

Question 3

Ground Speed 130 kt
Distance 78 nm
Time Interval:

Answer 3

36 min

Question 4

Ground Speed 163 kt
Time Interval 31 min
Distance:

Answer 4

84 nm

Question 5

Time Interval 17 min
Distance 46 nm
Ground Speed:

Answer 5

162 kt

Question 6

Ground Speed 87 kt
Distance 49 nm
Time Interval:

Answer 6

34 min

Question 7

Ground Speed 105 kt
Time Interval 56 min
Distance:

Answer 7

98 nm

Question 8

Time Interval 43 min
Distance 103 nm
Ground Speed:

Answer 8

143 kt

Question 9

An aircraft is cruising at 5000 ft where the temperature is +22 degrees. If IAS is 160 kt and a 25 kt headwind acts, how long will it take to cover the next 65 nm?

Answer 9

IAS 160 x 5000ft@22deg = 178 kt TAS
TAS 178 kt + -25 kt wind = GS 153
GS 153 x distance 65 nm = 25.5 minutes

Question 10

An aircraft is cruising at 9000 ft where the temp is 0 degrees. If there is a 15 kt tail wind, what CAS would be required to allow it to cover the next 54 nm in 20 minutes

Answer 10

20 minutes covering 54 nm = GS 162 kt
[Check 20 mins against 54 nm]

GS 162 - tailwind component = 147 kt TAS
[Tail wind wind would have pushed aircraft faster so take it off]

At 9000 ft with 0 degrees @ TAS 147 = CAS 127 kt
[White ring for TAS, Blue ring for CAS]

Question 11

GPH 9.0
Minutes elapsed 150
Gallons used:

Answer 11

23 gallons

Question 12

GPH 14.0
Gallons used 32
Minutes elapsed:

Answer 12

137 minutes

Question 13

GPH 8.5
Minutes elapsed 73
Gallons used:

Answer 13

10.4 gallons

Question 14

GPH 11.4
Gallons used 55
Minutes elapsed:

Answer 14

290 minutes

Question 15

Your aircraft is fueled with 55.5 gallons of fuel at start-up. You allow 1.6 gallons for engine start-up, taxi and take-off. Your average fuel consumption in flight is 14.3 gallons per hour. How much fuel will you have used after 14 minutes of flight in litres ?

Answer 15

19 litres

Question 16

Pressure height: 8000 ft
Ambient temp: -10°C
CAS: 190 kt

Determine the TAS.

Answer 16

210 kt

Question 17

An aircraft is cruising at FL 150 at a TAS of 165 kt. If the OAT is -20°C, what speed would be indicated on the face of the air speed indicator?

Answer 17

133 kt

Question 18

An aircraft is climbing at 600 ft per minute with a ground speed during the climb of 90 kt. How far down track will it travel during a climb from 2500 ft to 8500 ft ?

Answer 18

15 nm

Question 19

A pilot wishes to descend at 500 ft/m from his cruising level of 8500 ft as to arrive over the destination aerodrome at 1500 ft AGL. If the elevation of the destination aerodrome is 1000 ft and the ground speed during descent is 120 kt, how far from the destination aerodrome should the descent be commenced ?

Answer 19

Commence descent at 24 nm from the destination.

Question 20

Given wind velocity is 180°M at 25 kt. What cross wind component would you expect for a take off-off on runway 24 ?

Answer 20

22 kt from the left

Question 21

You notice you are 5 nm off track when you have flown 38 nm. What is the track error ?

Answer 21

8°

d(5) white wheel
D(38) blue wheel

Question 22

You left a location at 0610 and travelled 20 nm, you notice you are 3nm off track at 0619.

What is the track error ?

Answer 22

9°

Question 23

You travel 30 nm and find you are 5 nm off track. What is the track error ?

Answer 23

10°

Question 24

Track error question !!

You fly 50 nm and are 5 nm off track ?

Answer 24

6°

Question 25

You are travelling on a segment that is 80 nm long, at 50 nm you realise you are a dickhead and are off track by 5 nm. What heading change do you need to make?

Answer 25

16°

Question 26

You are travelling on a segment that is 135 nm long, at 45 nm you realise you are a dickhead and are off track by 9 nm. What heading change do you need to make?

Answer 26

18°

Question 27

You are travelling on a segment that is 60 nm long, at 40 nm you realise you are a dickhead and are off track by 4 nm. What heading change do you need to make?

Answer 27

18°

Question 28

Your flight planned track is 060°M and 90 nm in length. At 30 nm you figure out that you are actually 8 nm off course to the left.
What should you change your heading to ?

Answer 28

60 - 16° = 44° (TMG)
44° - (16° + 8°) = 068°M

Question 29

FPT = 300°M. At 20 nm you are 4 nm off track to the right with 40 nm remaining.

What heading should you adopt ?

Answer 29

294°M

Question 30

Flying with a heading of 093°M. You find yourself off course to the left by 5nm after travelling 60 nm. Your FPT is 090°M. What is the drift experienced ?

Answer 30

8°L

FPT - TE = TMG
TMG +- HDG = drift

Question 31

Your flight planned track is 120°M and you are of track to the right by 3nm. This happened after 20 nm whilst your heading was 118°, what is the drift you experienced ?

Answer 31

11°R

FPT + TE = TMG
TMG +- HDG = drift

Question 32

Oh no your aircraft has travelled 6 nm to the left off track !
You were 40 nm into your segment with a heading of 043°M.
On your map the segment has a line at 040°M.
What is the drift experienced ?

Answer 32

12°L

FPT - TE = TMG
TMG +- HDG = drift

Question 33

An aircraft is cruising at FL150 at a TAS of 165 kt. If the outside air temperature is -20°C, what speed would be indicated on the face of the air speed indicator ?

Answer 33

133kt