DHL INTERVIEW ATPL COMPREHENSIVE EXAM QUESTIONS
AND ANSWERS 2025/2026 ALL GRADED A+
✔✔when does LDA start? - ✔✔50 ft about threshold
Landing Distance available
✔✔what are the 5 segments of the take off? - ✔✔ground roll - ends at Vlof
First segment - starts screen height - gear retracted
second segment - starts gear up - ends at acceleration alt
third - min 400ft - finishes cleaned up
final - starts cleaned up - ends MCT
Max cruise thrust
✔✔how much of the LDA can you use for a jet A? - ✔✔60%
✔✔what is climb gradient - ✔✔% = T-D/W x 100
✔✔how much head and tail wind are we allowed to take into calculations? - ✔✔head =
50%
Tail = 150%
✔✔what is traffics load ? - ✔✔passengers + baggage + cargo + non revenue load
✔✔what must Vr be of VMCA for jets? - ✔✔1.05
✔✔what's Is the ASDA? - ✔✔TORA + stopway
✔✔what speed do you need to climb at on one engine - ✔✔VYSE - best rate of climb
for one engine,
blue line speed
✔✔what is ZFM? - ✔✔weight of the aircraft with traffic load but without fuel
✔✔What is the speed of sound? - ✔✔340 m/s or 661kts at the surface
✔✔what happens to the aircraft in mach tuck - ✔✔the aircraft pitches down as the
shock waves move the centre of pressure back
✔✔what is EAS? - ✔✔equivalent airspeed
correcting CAS for compressibility
IAS
CAS - correct for instrument error
EAS - Corrected for compression
,TAS - Corrected for Density
✔✔what is a wet start? - ✔✔Light-off does not occur within a reasonable amount of
time, and copious amounts of fuel collect in the burner can
✔✔how do you calculate local speed of sound (LSS) - ✔✔38.94 * SqR (temperature in
Kelvin)
✔✔What is a hung start? - ✔✔Light-off occurs, but the engine stabilizes below starter
cutoff speed (usually at a higher than normal temp)
✔✔what is the coefficient of lift? - ✔✔the ability for the wing to generate lift. depends on
angle of attack and wing shape
✔✔what will happen if the static port on the VSI gets blocked? - ✔✔it will read zero
✔✔what are the types of flaps - ✔✔Plain
slotted
split
zap
fowler
double slotted
✔✔what is the critical angle of attack? - ✔✔The point at which the wing will stall.
✔✔what are the times of useful conscious at FL180, 220 , 250, 300, 350, 400, 430, -
✔✔180 - 20-30 mins
220 - 10 mins
250 - 3-5 mins
300 - 1-2 mins
350 - 30 - 60 second
400 - 15 - 30 secs
430 - 10 secs
✔✔what are the advantages and disadvantages of a swept wing - ✔✔advantages -
increase Mcrit
- increase in Mach Number in cruise
- Greater stability in turbulence
Disadvantages - Poor lift
- high speed stall
- speed instability at slow airspeeds
wings tip stall
✔✔how does a slat help to generate lift? - ✔✔increase wing camber
, increases wing surface
reenergises the boundary layer
✔✔why does span wise flow caused by swept wings help with increasing Mcrit - ✔✔part
of the left is generated by span wise flow.
spanwise flow doesn't accelerate
✔✔what pressure do you get in a pitot tube - ✔✔total
Dynamic + Static
✔✔what is the time separation for wake turbulence for arriving aircrafts, following a
Heavy or medium - ✔✔heavy - heavy = 2mins - 4nm
heavy - medium = 2mins - 5 nm
heavy - light = 3 mins - 6nm
medium - light = 3 mins - 5nm
✔✔following a heavy or a medium what are the take off separations due to wake
turbulence - ✔✔same position = 2 min intermediate = 3 mins
✔✔how do you work out the mean chord? - ✔✔wing area / wing span
✔✔What is the angle of incidence? - ✔✔angle between the wing chord and the
longitudinal axis
✔✔what is the max time you should plan a takeoff alternate for? - ✔✔1 hour flying with
one engine out
✔✔what is the manoeuvring area at an airport? - ✔✔all surfaces used for takeoff
landing and taxing - not apron
✔✔when is a runways said to be contaminated? - ✔✔when more than more than 25%
is covered by more than 3mm
✔✔what is fight operational? - ✔✔a system that allows landing to continue if one
autopilot fails
✔✔what is the movement area of the airport? - ✔✔all surfaces used for taxing, take off,
landing including the apron
✔✔what is the height and temp of the tropopause when under isa conditions -
✔✔36,000 ft -56.5 degrees
✔✔what's the max time an enrolee alternate must be reachable with one engine out -
✔✔1 hr
AND ANSWERS 2025/2026 ALL GRADED A+
✔✔when does LDA start? - ✔✔50 ft about threshold
Landing Distance available
✔✔what are the 5 segments of the take off? - ✔✔ground roll - ends at Vlof
First segment - starts screen height - gear retracted
second segment - starts gear up - ends at acceleration alt
third - min 400ft - finishes cleaned up
final - starts cleaned up - ends MCT
Max cruise thrust
✔✔how much of the LDA can you use for a jet A? - ✔✔60%
✔✔what is climb gradient - ✔✔% = T-D/W x 100
✔✔how much head and tail wind are we allowed to take into calculations? - ✔✔head =
50%
Tail = 150%
✔✔what is traffics load ? - ✔✔passengers + baggage + cargo + non revenue load
✔✔what must Vr be of VMCA for jets? - ✔✔1.05
✔✔what's Is the ASDA? - ✔✔TORA + stopway
✔✔what speed do you need to climb at on one engine - ✔✔VYSE - best rate of climb
for one engine,
blue line speed
✔✔what is ZFM? - ✔✔weight of the aircraft with traffic load but without fuel
✔✔What is the speed of sound? - ✔✔340 m/s or 661kts at the surface
✔✔what happens to the aircraft in mach tuck - ✔✔the aircraft pitches down as the
shock waves move the centre of pressure back
✔✔what is EAS? - ✔✔equivalent airspeed
correcting CAS for compressibility
IAS
CAS - correct for instrument error
EAS - Corrected for compression
,TAS - Corrected for Density
✔✔what is a wet start? - ✔✔Light-off does not occur within a reasonable amount of
time, and copious amounts of fuel collect in the burner can
✔✔how do you calculate local speed of sound (LSS) - ✔✔38.94 * SqR (temperature in
Kelvin)
✔✔What is a hung start? - ✔✔Light-off occurs, but the engine stabilizes below starter
cutoff speed (usually at a higher than normal temp)
✔✔what is the coefficient of lift? - ✔✔the ability for the wing to generate lift. depends on
angle of attack and wing shape
✔✔what will happen if the static port on the VSI gets blocked? - ✔✔it will read zero
✔✔what are the types of flaps - ✔✔Plain
slotted
split
zap
fowler
double slotted
✔✔what is the critical angle of attack? - ✔✔The point at which the wing will stall.
✔✔what are the times of useful conscious at FL180, 220 , 250, 300, 350, 400, 430, -
✔✔180 - 20-30 mins
220 - 10 mins
250 - 3-5 mins
300 - 1-2 mins
350 - 30 - 60 second
400 - 15 - 30 secs
430 - 10 secs
✔✔what are the advantages and disadvantages of a swept wing - ✔✔advantages -
increase Mcrit
- increase in Mach Number in cruise
- Greater stability in turbulence
Disadvantages - Poor lift
- high speed stall
- speed instability at slow airspeeds
wings tip stall
✔✔how does a slat help to generate lift? - ✔✔increase wing camber
, increases wing surface
reenergises the boundary layer
✔✔why does span wise flow caused by swept wings help with increasing Mcrit - ✔✔part
of the left is generated by span wise flow.
spanwise flow doesn't accelerate
✔✔what pressure do you get in a pitot tube - ✔✔total
Dynamic + Static
✔✔what is the time separation for wake turbulence for arriving aircrafts, following a
Heavy or medium - ✔✔heavy - heavy = 2mins - 4nm
heavy - medium = 2mins - 5 nm
heavy - light = 3 mins - 6nm
medium - light = 3 mins - 5nm
✔✔following a heavy or a medium what are the take off separations due to wake
turbulence - ✔✔same position = 2 min intermediate = 3 mins
✔✔how do you work out the mean chord? - ✔✔wing area / wing span
✔✔What is the angle of incidence? - ✔✔angle between the wing chord and the
longitudinal axis
✔✔what is the max time you should plan a takeoff alternate for? - ✔✔1 hour flying with
one engine out
✔✔what is the manoeuvring area at an airport? - ✔✔all surfaces used for takeoff
landing and taxing - not apron
✔✔when is a runways said to be contaminated? - ✔✔when more than more than 25%
is covered by more than 3mm
✔✔what is fight operational? - ✔✔a system that allows landing to continue if one
autopilot fails
✔✔what is the movement area of the airport? - ✔✔all surfaces used for taxing, take off,
landing including the apron
✔✔what is the height and temp of the tropopause when under isa conditions -
✔✔36,000 ft -56.5 degrees
✔✔what's the max time an enrolee alternate must be reachable with one engine out -
✔✔1 hr
