Meridians of longitude form half of an imaginary great circle on the Earth’s surface, starting at the North Pole and ending at the South Pole, connecting points of equal longitude

Longitude describes the location of a place East or West from the Prime Meridian, a line which runs between the poles and through Greenwich, England; which acts as a datum.

Longitude increases as you leave the Prime Meridian (0 degrees) going East (0 to 180 degrees) and decreases as you head West (0 to -180 degrees), until they meet at 180 degrees.

– ETP

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ETP – Tailwind Example

In this example we take look at working out a ETP,

With TAS of 200kts and Tail wind of 40kts over distance over 800nm.

Distane to to ETP is : 320

Example of ETP.

Nav Computer setup

By checking the 1 and read off a percentage distane a long your track where the ETP is.
This a handy check, to double check the ETP has moved toward the wind .

As Double Check, just confirm that the times for each legs are the same.

(b) division

Some pet calculations for division..

For example what is 15 / 3 = ??

To calculate this on the wizz wheel, setup 15 over 3 and now you have a ratio. Simply find the 1 or 10 on the inside and, the answer is on the outside.

Example 1.

1. Find the 15 on the outside scale

2. On the inside line up the 3 or 30

18.48.8 Estimate and calculate an aircrafts position given

18.48.8 Estimate and calculate an aircrafts position given bearing and distance from an
identified ground position.

18.46.8 State the legal minimum fuel reserves required on a

18.46.8 State the legal minimum fuel reserves required on a VFR cross-country flight.

(c) interpret information from aerodrome charts and associated operational data pages.

The AIP VOL4 contains information on aerodromes and procedures, as well as much more. Each airport in NZ has a page in the VOL4 with all the information you would need to visit there and fly the local procedures.

An example of an aerodrome in VOL4 is as follows