PPL Aircraft Weights Practice Exam
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Congratulations and thanks for taking the practice exam. Any Aeroplane or general exam errors, please send to [email protected] Any Helicopter specific exam errors, please report to [email protected] Please never report errors via Messenger to Matt. Please ask all general questions in the Facebook group. Remember to watch the how to study videos and be sure to use the “Super Active Study Techniques” and “Exam Super Cycles”.
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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 10ºC Aircraft Weight 3200 lb
Wind: 270°M 10 kt 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 10ºC, follow up to 4000 ft, go across to next section
Follow slope down to reach 3200 lbs, go across to next section
Follow slope down to reach 10 kt headwind, go across to next section
Follow slope upwards till 50 ft 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 10ºC, follow up to 4000 ft, go across to next section
Follow slope down to reach 3200 lbs, go across to next section
Follow slope down to reach 10 kt headwind, go across to next section
Follow slope upwards till 50 ft 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 10ºC Aircraft Weight 3200 lb
Wind: 270°M 20 kt 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 1500 kg aircraft should be at least how many meters wide according to CASA ALA guides?
Correct
(not the new CAR235 which deal with aircraft >5700 kg). See CAAP 922
https://www.casa.gov.au/files/921pdf
From : https://www.casa.gov.au/rulesandregulations/standardpage/civilaviationadvisorypublicationsIncorrect
(not the new CAR235 which deal with aircraft >5700 kg). 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 5 m tower located 80 m 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 100 m but it is located 80 m anyway. So thus 20 m 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 100 m but it is located 80 m anyway. So thus 20 m 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 10 m tower located 100 m 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 200 m but it is located 100 m anyway. So thus 100 m 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 200 m but it is located 100 m anyway. So thus 100 m 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 : 500 m Obstacle distance: 40 m
Obstacle height: 5 m
At what length would the runway become too short for this aircraft to mathematically take off?Correct
Ground roll requires 500 m
5 m high obstacle requires 100 m to clear and is located 40 m off end of runway.
Runway effectively shortened 60 m by obstacle
500 m + 60 m = 560 m mathematical minimum. Note this allows zero margin of safety!Incorrect
Ground roll requires 500 m
5 m high obstacle requires 100 m to clear and is located 40 m off end of runway.
Runway effectively shortened 60 m by obstacle
500 m + 60 m = 560 m 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 700 kg and you calculate the moment to be 600 mm 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 800 kg and you calculate the moment to be 850 mm 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 1900 kg. 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: 780 kg Fuel: 220 kg Oil: 15 kg Row 1 Person : 200 kg
Row 2 PAX: 160 kg Baggage: 30 kg
Empty weight: 0 cm Fuel: 240 cm Oil: 80 cm Row 1 Person : 180 cm
Row 2 PAX: 280 cm Baggage: 300 cm
MTOW: 1400 kg 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 2 kt 230° Runways are 01 19 Aircraft Cessna 182 well under MTOW
Runway 19 10 m obstacle 25 m from end of runway
Runway 01 5 m obstacle located 200 m from end of runway
A take off distance has been calculated and is 5 m too long to clear the obstacle located off end of runway 19
What should the pilot do?Correct
2 kt tail wind is insignificant to takeoff performance, the wind is almost side on. The obstacle on runway 01 is 200 m away and 5 m tall. Using the 20:1 rule or 5% rule it is not really an obstacle that should affect the runway.
Incorrect
2 kt tail wind is insignificant to takeoff performance, the wind is almost side on. The obstacle on runway 01 is 200 m away and 5 m tall. Using the 20:1 rule or 5% rule it is not really an obstacle that should affect the runway.
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