PPL Aircraft Weights Practice Exam
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Instructions:
 Read question and select answer, then press check. Reread critical part of question, and answer by saying it out loud or muttering it at least 3 times. (Memory tip)
 Select “Next” and repeat until you are finished all questions
 When finished select “Quiz Summary” then “finish Quiz” to view your score.
 Then select “View Questions” to view all correct an incorrect responses.
 In A4 book Record your result and a list of the topics you got wrong.
 Go to textbook index and record pages for these topic as you will keep getting many of the same questions wrong with study breaks.
 Study from the text your wrong topics, then retest after a minimum 10 min break.
 Record study techniques used from “how to study videos” and pre/post study test scores, to help identify your best study methods.
Using these methods you will rapidly improve and find what works best for you. Good luck!
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Can you please describe to us why it is wrong. It would really help if you provided a source if possible.
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Question 1 of 15
1. Question
In the Bonanza takeoff chart above, work out the TODR in feet.
Runways: 09 27 Pressure alt: 4000 OAT 10C Aircraft Weight 3200 lb
Wind: 270°M 10kt To Clear Obstacle: 50 FT
Further notes thanks to Sergey
“using the optimum runway 27 results in 10 kt straight headwind…”
However, exact definition of TODR requires an additional safety factor of 1.15 (for small aircraft, see CAO 2.7.4 §6). The manufacturer’s charts don’t account for it.Correct
Find 10C, follow up to 4000ft, go across to next section
Follow slope down to reach 3200 lbs, go across to next section
Follow slope down to reach 10kt headwind, go across to next section
Follow slope upwards till 50ft obstacle clearance
This final point gives you take off distance in feet = 1800 feet
“using the optimum runway 27 results in 10 kt straight headwind…”
Further notes thanks to Sergey
“using the optimum runway 27 results in 10 kt straight headwind…”
However, exact definition of TODR requires an additional safety factor of 1.15 (for small aircraft, see CAO 2.7.4 §6). The manufacturer’s charts don’t account for it.
Incorrect
Find 10C, follow up to 4000ft, go across to next section
Follow slope down to reach 3200 lbs, go across to next section
Follow slope down to reach 10kt headwind, go across to next section
Follow slope upwards till 50ft obstacle clearance
This final point gives you take off distance in feet = 1800 feet
“using the optimum runway 27 results in 10 kt straight headwind…”
Further notes thanks to Sergey
“using the optimum runway 27 results in 10 kt straight headwind…”
However, exact definition of TODR requires an additional safety factor of 1.15 (for small aircraft, see CAO 2.7.4 §6). The manufacturer’s charts don’t account for it.

Question 2 of 15
2. Question
In the Bonanza takeoff chart above, work out the required runway distance if in feet.
Runways: 09 27 Pressure alt: 4000 OAT 10C Aircraft Weight 3200 lb
Wind: 270°M 20kt To Clear Obstacle: 25 FTCorrect
Incorrect

Question 3 of 15
3. Question
A suitable landing area on an ALA on say a farm or remote area for a 1500kg aircraft should be at least how many meters wide according to CASA ALA guides?
Correct
(not the new CAR235 which deal with aircraft >5700kg). See CAAP 922
https://www.casa.gov.au/files/921pdf
From : https://www.casa.gov.au/rulesandregulations/standardpage/civilaviationadvisorypublications
Incorrect
(not the new CAR235 which deal with aircraft >5700kg). See CAAP 922
https://www.casa.gov.au/files/921pdf
From : https://www.casa.gov.au/rulesandregulations/standardpage/civilaviationadvisorypublications

Question 4 of 15
4. Question
An ALA has a 5m tower located 80m off the end of an airstrip. What distance will this reduce the effective length of the takeoff strip?
Correct
Using the 1 in 20 rule or 5% Take off gradient. 20 x Height reduces by 100m but it is located 80m anyway. So thus 20m reduction.
Please note: Although 1 in 20 rule allows for easy calculation the required takeoff gradient is 6% (CAO 2.7.4 §7).
Incorrect
Using the 1 in 20 rule or 5% Take off gradient. 20 x Height reduces by 100m but it is located 80m anyway. So thus 20m reduction.
Please note: Although 1 in 20 rule allows for easy calculation the required takeoff gradient is 6% (CAO 2.7.4 §7).

Question 5 of 15
5. Question
An ALA has a 10m tower located 100m off the end of an airstrip. What distance will this reduce the effective length of the takeoff strip?
Correct
Using the 1 in 20 rule or 5% Take off gradient. 20 x Height reduces by 200m but it is located 100m anyway. So thus 100m reduction.
Please note: Although 1 in 20 rule allows for easy calculation the required takeoff gradient is 6% (CAO 2.7.4 §7).
Incorrect
Using the 1 in 20 rule or 5% Take off gradient. 20 x Height reduces by 200m but it is located 100m anyway. So thus 100m reduction.
Please note: Although 1 in 20 rule allows for easy calculation the required takeoff gradient is 6% (CAO 2.7.4 §7).

Question 6 of 15
6. Question
A pilot is trying to work out if it will be safe to take off at a small runway.
Calculated ground roll : 500m Obstacle distance: 40m
Obstacle height: 5m
What runway length would be considered too short for this aircraft to mathematically take off?
Correct
Incorrect
Ground roll requires 500m
5m high obstacle requires 100m to clear and is located 40m off end of runway.
Runway effectively shortened 60m by obstacle
500m + 60m = 560m mathematical minimum. Note this allows zero margin of safety!

Question 7 of 15
7. Question
This is a theoretical C of G envelope for an aircraft you intend to fly.
The aircraft has a Take Off Weight (TOW) of 700kg and you calculate the moment to be 600mm from the datum point.
Is it safe to fly?
Correct
Incorrect

Question 8 of 15
8. Question
This is a theoretical C of G envelope for an aircraft you intend to fly.
The aircraft has a Take Off Weight (TOW) of 800kg and you calculate the moment to be 850mm from the datum point.
Is it safe to fly?
Correct
Incorrect

Question 9 of 15
9. Question
You calculate out a moment index of 140 and a TOW of 1900kg. The aircraft would be?
Correct
Incorrect

Question 10 of 15
10. Question
You do your imperial calculations and you discover the C of G chart for the aircraft is in metric. Is the aircraft safe to fly with these weights?
Correct
Convert to inches to cm and lbs to kg… should come out at approx moment 134 index and 1457 kg
Incorrect
Convert to inches to cm and lbs to kg… should come out at approx moment 134 index and 1457 kg

Question 11 of 15
11. Question
What is the approximate moment index?
Correct
Incorrect

Question 12 of 15
12. Question
Using a loading system Charlie, a pilot has the following details:
Empty weight: 780kg Fuel: 220kg Oil: 15kg Row 1 Person : 200 kg
Row 2 PAX: 160kg Baggage: 30 kg
Empty weight: 0 cm Fuel: 240cm Oil: 80cm Row 1 Person : 180cm
Row 2 PAX: 280cm Baggage: 300cm
MTOW: 1400kg Max Moment Index at MTOW 140
Is the aircraft within its safe to fly C of G envelope?
Correct
Irrespective of the moment calculation which you didn’t need to do, it is over MTOW and thus not safe to fly.
If you did the calculation, never mind, it is great practice .
Incorrect
Irrespective of the moment calculation which you didn’t need to do, it is over MTOW and thus not safe to fly.
If you did the calculation, never mind, it is great practice .

Question 13 of 15
13. Question
If an aircraft has a datum point located at front tip of the spinner and assuming the tanks are located forward of the C of G, putting fuel into the tanks will move the centre of gravity forward.
Correct
Incorrect

Question 14 of 15
14. Question
A 6 seat aircraft is right on MTOW and right near the aft C of G limit, but within its C of G in the flight envelope. What could the pilot do prior to takeoff to make this situation safer?
Correct
Even when aircraft are within limits, if you can improve safety, you should. Moving the heavier passengers forward will assist in bringing the aircraft well within its envelope. Some will say it is unnecessary. But what if you have made a miscalculation?
Incorrect
Even when aircraft are within limits, if you can improve safety, you should. Moving the heavier passengers forward will assist in bringing the aircraft well within its envelope. Some will say it is unnecessary. But what if you have made a miscalculation?

Question 15 of 15
15. Question
Wind is 2kt 230° Runways are 01 19 Aircraft Cessna 182 well under MTOW
Runway 19 10m obstacle 25m from end of runway
Runway 01 5m obstacle located 200m from end of runway
A take off distance has been calculated and is 5m too long to clear the obstacle located off end of runway 19
What should the pilot do?
Correct
Incorrect
2kt tail wind is insignificant to takeoff performance, the wind is almost side on. The obstacle on runway 01 is 200m away and 5 m tall. Using the 20:1 rule or 5% rule it is not really an obstacle that should affect the runway.