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Charts Advice

Charts Advice

These two will serve you perfectly well to study.

Charts is one area CASA has highlighted that is causing more than 1 in 3 students to fail.

Here are some seriously powerful tips that will have you ready to pass your charts section.

There are a few types of charts, map charts, loading charts and performance charts.

Performance charts come in landing (LDG) and take-off (TO) charts in two types. The 4 box types are know as type 1, the graph paper looking charts are know as linear type performance charts. You must be able to do these with pinpoint accuracy, using reading glasses and even a grid ruler or folded paper to get lines perfect.

Loading charts include Alpha, Bravo and Charlie for RPL & PPL level and CPL includes Echo as well. You must know how to do these incredibly well, knowing how to determine if you are within the envelope at MTOW and ZFW as fuel is burned during flight. If you are out of the envelope prior to flight, you should be able to work out why you are out and how much weight to needs to be reduced or shifted to get you back within the safe flight envelope from MTOW to ZFW.

With the map type charts, on page 27-30 of the 2011 VFR workbook V3 above there are 4 maps.

  1. Page 27 an A4 extract of a WAC of the Townsville Area 3219
  2. Page 28 an A4 extract of a WAC of the Dubbo Forbes Bathurst Area 3456
  3. Page 29 an A4 extract of a WAC of the Wagga Wagga, Cowra, Goulburn Canberra Area 3456
  4. Page 30 an A4 extract of a WAC of the Narrabri, Walgett, Lightning Ridge, St George Area 3356

Always ask yourself what could they ask me from this source and if you take that approach you will be ready.

Here are some of the things they will, have or might ask you….

  1. Plan a route from A to B to C with X winds in an aircraft that cruises at X knots and burns X fuel requiring X reserve and with TEMPO or INTER
    • Calculate total flight time
    • Calculate fuel required
    • Calculate fuel required with a TEMPO or INTER
    • Calculate headings, tracks
    • Calculate track error, TMG and required track
  2. Calculate correction angle when off track, they will give you a position and you need to work out if you are off track to left or right, by how much and the heading you now need to correct
  3. They will give you a leg and ask you which landmark is best to use near the X minute mark… its generally a town, crossing a river or highway
  4. On particular question may ask you to select a top of descent location from the map.
  5. You may be required to place your protractor on the map and work out a track or the track error
  6. You will need to know which ruler to use to measure distances on the WAC
  7. You will need to be able to draw lines and identify minimum safe altitude for a leg.
  8. You may be given a diversion at a location, or at a flight time and have to work out aircraft position and then the diversion time or fuel or angle.
Townsville WAC Canberra West Wyalong Goulburn WAC Dubbo Forbes Bathurst WAC Moree St George WAC

Please note the images being shown onmobile are 50% of original size, however your browser may scale them. Desktop and tablet are 100%, but again browsers may scale.

Townsville WAC 50 percent Dubbo Forbes Bathurst WAC 50 percent Canberra West Wyalong Goulburn WAC 50 percent Moree St George WAC 50 percent

Example Questions

You plan to fly from NARRABRI (YNBR) (3019S 14950E) direct to ST GEORGE (YSGE) (2803S 14836E). To avoid clouds after departing YNBR you divert left of planned TR along the YNBR – WALGETT railway line. At WEE WAA township (approximately 20 nm WNW YNBR) you decide to track direct to YSGE. The ARFOR wind for your cruise level is 100/20 kts, and your TAS is 140 kts. The HDG (M) to steer to YSGE is closest to?

________________

You are planning a flight from MUDGEE (NSW) (3234S 14936E) to COWRA (NSW) (3351S 14839E). The ARFORS needed for the flight MUDGEE – COWRA are?

________________

You are on a flight from ST GEORGE (YSGE) (2803S 14836E) to WALGETT (YWLG) (3002S 14807E). You departed YSGE at 0308 UTC. At 0324 UTC you crossed the railway line (approximately 35nm SE YSGE) and fixed your position between Bonathorne railway station and NOONDOO township. Using track error lines you estimate that the track error from YSGE to the 0324 UTC position is 8 degrees right. You now alter HDG 16 degrees left to intercept the planned TR. At what time should the aircraft intercept the (planned) YSGE – YWLG track?

______________

The following details pertain to a direct flight from BATHURST (YBTH) (3325S 14939E) to DUBBO (YSDU) (3213S 14834E):

ATD YBTH at 2305UTC, 2317UTC over HILL END town (approximately 25nm from YBTH), constant HDG maintained since departure YBTH.

The alteration of HDG required to regain planned TR to YSDU abeam Wellington town is closest to?

________________

The following details pertain to a direct flight from BATHURST (YBTH) (3325S 14939E) to DUBBO (YSDU) (3213S 14834E):

ATD YBTH at 2305 UTC, 2317 UTC over HILL END town (approximately 25nm from YBTH).

Using this data the estimate for YSDU is closest to?

________________

You plan to fly from NARRABRI (YNBR) (3019S 14950E) direct to ST GEORGE (YSGE) (2803S 14836E). To avoid clouds after departing YNBR you divert left of planned TR along the YNBR – WALGETT railway line. At WEE WAA township (approximately 20nm WNW YNBR) you decide to track direct to YSGE. Which of the following features would provide the most accurate ground speed check between WEE WAA and YSGE?

________________

Refer (BOURKE) WAC 3356 (provided in examination). You plan to fly ST GEORGE (YSGE) (2803S 14836E) – WALGETT (YWLG) (3002S 14807E). Your track YSGE to YWLG is 181 Deg (M). The ARFOR indicates that there will be more than 4 oktas clouds with a base of 10,000ft along the route. The highest altitude at which you may cruise VFR in accordance with the Table of Cruising Levels is?