7 / 20

Given:

TT Wind TH Var. MH Dev. CH CAS PA Temp. TAS GS Dis. Time
274º 135º/20 kt 6ºE 2ºW 125 kt 7 000 ft +5ºC 32 NM

Calculate GS (Ground Speed) and time..

• A
GS = 149 kts, time = 13 minutes
• B
GS = 140 kts, time = 14 minutes
• C
GS = 138 kts, time = 10 minutes
• D
GS = 154 kts, time = 12 minutes

CAS to TAS with your flight computer

1. Set pressure altitude in the window opposite the OAT in Celsius.

2. Without moving the computer’s scales, read TAS on the outer scale opposite to CAS.

Set PA 7000 against +5ºC, opposite to CAS 125 kts read TAS 140 kts.

Determining Heading and G/S with the flight computer:

1. Set Wind Direction under True Index.

2. Mark wind Velocity up from center point (100 kts).

3. Set True Course under True Index.

4. Slide wind Velocity mark to True Air Speed.

5. Ground Speed reads under center.

6. WCA reads between center line and wind velocity mark.

Drift or drift angle, is the angular difference between the track of the aircraft across and it's heading.
Always remember that the drift angle is always measured with reference to the heading.
The heading is the direction in witch the the aircraft’s nose is pointing for.

Wind Correction Angle is the angular value opposite to the drift angle, and it refers to the heading angle correction in order to keep your aircraft in the desired track.

G/S = 154 kts

FT = 32 / 154 = 12’

Your Notes (not visible to others)

This question has appeared on the real examination, you can find the related countries below.