EASA PERF Exam Feedback

Question 1

What is the minimum clearway width required?

Answer 1

500ft

Question 2

A twinjet must maintain a minimum net gradient in the second segment of 2.0%. It will be banked by 15deg, and lose 0.5% in the second segment. What is the minimum GROSS GRADIENT required to ensure that the second segment net gradient is met?

Answer 2

2.5 + 0.8% = 3.3

Question 3

Screen Height for a Class B

Answer 3

50ft - wet AND dry

Question 4

Screen Height for Class A

Answer 4

Dry Runway - 35ft

Wet Runway - 15ft

Question 5

Define VS0

Answer 5

Stalling speed in Landing Configuration

Question 6

What is the cost index?

Answer 6

Costs incurred over time divided by fuel costs.

A number denoting the ratio of the costs of crew and maintenance to the cost of the fuel.

Question 7

When carrying out the Increased V2 take-off procedure what is the effect on the screen height?

Answer 7

Remains constant.

Question 8

If V2 is increased what happens to CLTOM and the climb angle?

Answer 8

Both increase

Question 9

Effect of mass increase on ROD, Descent Gradient & Angle

Answer 9

ROD increases

Gradient constant

Descent Angle Constant

Question 10

Why would you decrease the flap settings?

Answer 10

If you have a long runway + close obstacles

Question 11

How do you calculate ASDR with OEI?

Answer 11

ASDR is the distance from break release point to V1 & the distance from V1 + 2 sec to a complete stop.

Question 12

What determines Quick Turnaround?

Answer 12

Flaps

Palt

Temp

Wind

Slope

NO REVERSE THRUST, NO PMC

Question 13

Runway is contaminated - effect on CLTOM & FLTOM?

Answer 13

CLTOM unchanged

FLTOM decreases.

Question 14

Effect of using a dry V1, instead of a wet V1 on a WET RUNWAY

Answer 14

Accelerate stop distance will exceed the accelerate stop distance available

Question 15

What happens to screen height, when increasing V2?

Answer 15

Screen height remains constant.

Question 16

Define Specific Fuel Consumption

Answer 16

The mass of fuel used to produce thrust per unit of time.

Question 17

Two aircraft have the exact same mass, but located at two different altitudes.

Answer 17

Higher aircraft has a reduced ROC

Question 18

Factors affecting Drift Down flight path

Answer 18

Mass at start of drift down

Pressure Altitude

Temperature

Question 19

What happens if excess thrust increases?

Answer 19

Aircraft accelerates

ROC increases

Question 20

What is TODA

Answer 20

Takeoff Distance Available

TORA + Clearway (max is TORA 1.5)

Question 21

Factors affecting level off altitude (ENG OUT Drift down)

Answer 21

Weight

Temperature

Question 22

Max allowable wind fig.2,4 (2 marks questions)

LDA 2000 ft
PA 10000 FT
TEMP -2

Answer 22

4 kts tail
6 kts tail
24 kts headwind

** 19 kts headwind ( right answer)

Question 23

How does an increase in mass affect Vx and Vy?

Answer 23

Vx and Vy are increased

Question 24

You are planning to fly a turbojet to an airfield with a LDA of 2300 ft. It has a 2% downhill and it will be wet at the time of landing. What is the landing distance to comply with regulations.

Answer 24

(You need to factor for the wet runway because its landing divide by 1.15 then divide by 1,67 (no downslope factorisation check page 349)

Question 25

Effects of an upslope on TODR and (stopping distance/ASD)

Answer 25

TODR is increased, **stopping distance is decreased ** or ASD increases.

Question 26

Fig. 3,2 TODA= 3000, ASDA=2600, TORA= 2000, What is the Field Length limited TOM?

Answer 26

Divide TODA 1.15 -> 3000->2600 Divide ASDA 1.3 > 2600 -> 2000 Divide TORA by 1 = 2000 Enter the graph with lowest figure

Question 27

What is the regulated TOM?

Answer 27

The lowest of PLTOM and maxiumum structural TOM

Question 28

Flying in tropics at FL350, thunderstorms en route. 1.4g buffet margin of M0.79 to M0.81. Decision?

Answer 28

Descent to FL330 where the buffet margin increases to M0.72 to M.084, navigate around cells

Question 29

Why does crossover altitude exist?

Answer 29

To not exceed MMO

Question 30

What is the specific range

Answer 30

TAS/Fuel Flow

Question 31

On take-off from an un-balanced field you have an available range of V1's. If a higher V1 is selected from the range then:

Answer 31

The all engine take-off distance will be unaffected.

Question 32

LCY Glideslope is 5.5 degrees. What is the descent gradient?

Answer 32

tan(5.5) x 100 = 9.6%

Question 33

If landing mass is greater than maximum quick turnaround mass

Answer 33

Pilot must wait a certain amount of time before commencing another takeoff.

Question 34

If the Pressure Altitude of an Airport is increased, what happens to the landing distance and ASDA?

Answer 34

Landing distance increases ASDA stays the same. ASDA - AVAILABLE, physical; unchangeable

Question 35

Wet paved - takeoff

Answer 35

1.0

Question 36

What is the effect of decreasing density on flight path angle, rate of climb, and climb angle?

Answer 36

All decrease

Question 37

On the speed versus Thrust required curve, what is the point of contact with the tangent of the curve

Answer 37

1.32VMD because speed is proportional to thrust required at the minimum

Question 38

When TOM is limited by VMBE, an increase in the uphill slope will

Answer 38

VMBE Limited TOM increases -> increase in allowable mass

Question 39

What decreases maximum quick turnaround mass?

Answer 39

Increasing temperature, and Palt

Question 40

What happens to ASDR on an uphill runway?

Answer 40

Increases

Question 41

What speed limits V1?

Answer 41

VMBE

Question 42

What is the climb requirement in the 3rd segment?

Answer 42

There is no climb requirement

Question 43

V2 in relation to VMCA

Answer 43

V2min must not be less than 1.1 VMCA

Question 44

Takeoff with "compacted snow" on runway

Answer 44

TODR stays the same, ASDR increases

Question 45

Class B Takeoff Distance Factors

Answer 45

No stopway / clearway available - x12.5 should not exceed TORA With Stopway and Clearway - 1.15 should not exceed TODA Should not exceed TORA

Question 46

Descending on constant Mach

Answer 46

IAS increases, TAS increases

Question 47

Effect on ASDR if anti-skid is inop.

Answer 47

ASDR increases

Question 48

A balance takeoff is where

Answer 48

OEI TODR = OEI ASDR

Question 49

Define Specific Range

Answer 49

Distance per mass fuel - SR = NM per KG

Question 50

TODA is TORA +

Answer 50

Clearway if available

Question 51

Which distance increases only with the addition of a stopway?

Answer 51

Acceleration Stop distance available

Question 52

Effect of uphill runway on ASDR

Answer 52

Increases

Question 53

In unaccelerated climb:

Answer 53

Thrust equals drag plus the downhill component of the gross weight in the flight path direction.