DHL INTERVIEW ATPL QUESTIONS | QUESTIONS
WITH VERIFIED ACCURATE ANSWERS | LATEST
UPDATED
What is the VOR change over distance? - Answers -60NM
What is the minimum distance between parallel runways? - Answers -915m
what the key points of using Mode 2 for parallel runways? - Answers -Only straight in
approaches allowed
interception angle of no more that 30 degrees
must be straight and level 1NM for localiser
must be straight and level 2NM for Glideslope
Minimum separation of 3NM on same Loc
Min separation of 2 NM on adjacent Loc
Missed approach tracks diverge by at least 30 degree
what is the minimum time a flight plan must be filed before departure - Answers -60
minutes
how does a pilot create a slip or a skid and how it is indicated on the turn co-ordinator? -
Answers -Slip - opposite rudder to direction of turn = ball will be at the same side of the
turn
Skid - too much rudder in the direction of the turn = ball will be on the opposite side to
the turn
what time must ATC clocks be within? - Answers -30 seconds
what are the Airspace separations rules for Class A - Answers -IFR Only
What are the Airspace separation rules for Class B - Answers -IFR and VFR seperated
What are the Airspace separation rules for Class C - Answers -IFR separated from IFR
IFR Separated from VFR
VFR Info about VFR
Speed limited below FL100 250kts
IFR ( speed limit only on ATC instruction)
What are the Airspace separation rules for Class D - Answers -IFR Separated from
VFR
IFR Info about VFR
,VFR Info about VFR
Speed limit below FL100 250kts
what its the difference between class D and Class E airspace for VFR - Answers -No
ATC required
No SVFR
What is Load Shedding - Answers -Reducing electrical load on the system by turning of
unnecessary electrical components
how would an artificial feel unit be connected? - Answers -In Parallel
otherwise if it failed it would stop the system
what are booster pumps - Answers -low pressure centrifugal boots that supply fuel to
the engines.
why are booster pumps important? - Answers -they prevent cavitation of the engine
driven pumps at high altitude.
what is the purpose of baffle valves - Answers -to prevent fuel flowing the the wing tips
to keep it in the centre near the pumps
what is a feeder box - Answers -a box arounds the booster pumps that keeps the
pumps submerged in fuel to prevent cavitation
how do you switch off the magneto - Answers -ground the primary circuit
how is the twin jet fuelled - Answers -by fuel being pumped from the fuel truck
what type of fire extinguisher do you use on propane fire - Answers -foam
what is the difference between IAS and CAS (calibrated Airspeed) - Answers -corrected
for instrument positional errors
what is the difference between CAS and TAS (true Airspeed) - Answers -Corrected for
changes in air Density
when is ground effect felt? - Answers -half the wingspan from the ground
what is interference drag? - Answers -Drag caused by interaction of boundary layers at
major aircraft components
what are high aspect ratio wings - Answers -long thin wings
what are low aspect ratio wings - Answers -short fat ones
,why are all jet liners wings swept - Answers -they are better at close to mach
where does the Pulmonary artery pump blood to? - Answers -the lungs
what is reduced when someone hyper ventilates - Answers -CO2
how long such you void flying for after giving blood? - Answers -24 hrs
what percentages of accidents are caused by human error - Answers -70%
What is the tropopause? - Answers -The boundary between the troposphere and the
stratosphere.
Where temp no longer increases with height
what does the air need to be at the summit of a mountain to cause mountain waves? -
Answers -stable
what does they wind need to be doing with increasing altitude to cause mountain
waves? - Answers -increasing
why won't cirrus clouds cause icing - Answers -they are already ice crystals
what side of the polar jet stream in the most turbulence on? - Answers -the cold side
what is Grivation - Answers -the combination of Grid convergence and magnetic
variation
what is ISA? - Answers -Temp 15
Pressure 1013.35
Density 1225
- 2 c per 1000ft
27ft per 1 Hpa
What is pressure Altitude? - Answers -the vertical distance from ISO
how many nautical miles is one degree of latitude? - Answers -60NM
where is the magnetic pole? - Answers -North Canada
what cool would the magnetic pole be? - Answers -blue
what is the formula for rate of descent and ground speed for a 3 degree glide slope -
Answers -5 x Ground speed = Rate of Descent
what air is used to cool the air in the boot leg air conditioning system? - Answers -
Ramp air
, what are the advantages of cruising at high altitudes - Answers -faster
more efficient
above bad weather
what does the pack flow control valve - Answers -controls the flow of bleed air in to the
Air con packs
how many heat exchangers are there is bootstrap system - Answers -2
primary
main(secondary)
For the localiser, what frequency is on the left and right lobes - Answers -left - 90 hz -
Yellow
right - 150 hz - Blue
for the glides slope, what is the frequency of the lobes above and below? - Answers -
above - 90hz - yellow
below - 150hz - blue
what are the colours for the outer, middle and inner marker for the ILS - Answers -outer
- blue
middle - yellow
inner - white
how is an ILS with a DME indicated on a approach chart - Answers -it will have a D
before the ILS frequency
what are the ranges you should be able to pick up the localiser - Answers -25 nm - 10
degrees either side
17 Nm - 35 degrees either side
10NM - 90 either side
at what range does the glide slope have its best accuracy? - Answers -10nm - 8
degrees either side
how does a DME work - Answers -the aircraft sends out a pulse and the ground station
sends it back. depending on the time to recieve it back depends on the distance - Slant
range
What does VOR mean? - Answers -VHF Omnidirectional Range
what range are VOR usable to? - Answers -25 - 140 nm
what is the range of frequency for a VOR - Answers -108- 117.9 Mhz
WITH VERIFIED ACCURATE ANSWERS | LATEST
UPDATED
What is the VOR change over distance? - Answers -60NM
What is the minimum distance between parallel runways? - Answers -915m
what the key points of using Mode 2 for parallel runways? - Answers -Only straight in
approaches allowed
interception angle of no more that 30 degrees
must be straight and level 1NM for localiser
must be straight and level 2NM for Glideslope
Minimum separation of 3NM on same Loc
Min separation of 2 NM on adjacent Loc
Missed approach tracks diverge by at least 30 degree
what is the minimum time a flight plan must be filed before departure - Answers -60
minutes
how does a pilot create a slip or a skid and how it is indicated on the turn co-ordinator? -
Answers -Slip - opposite rudder to direction of turn = ball will be at the same side of the
turn
Skid - too much rudder in the direction of the turn = ball will be on the opposite side to
the turn
what time must ATC clocks be within? - Answers -30 seconds
what are the Airspace separations rules for Class A - Answers -IFR Only
What are the Airspace separation rules for Class B - Answers -IFR and VFR seperated
What are the Airspace separation rules for Class C - Answers -IFR separated from IFR
IFR Separated from VFR
VFR Info about VFR
Speed limited below FL100 250kts
IFR ( speed limit only on ATC instruction)
What are the Airspace separation rules for Class D - Answers -IFR Separated from
VFR
IFR Info about VFR
,VFR Info about VFR
Speed limit below FL100 250kts
what its the difference between class D and Class E airspace for VFR - Answers -No
ATC required
No SVFR
What is Load Shedding - Answers -Reducing electrical load on the system by turning of
unnecessary electrical components
how would an artificial feel unit be connected? - Answers -In Parallel
otherwise if it failed it would stop the system
what are booster pumps - Answers -low pressure centrifugal boots that supply fuel to
the engines.
why are booster pumps important? - Answers -they prevent cavitation of the engine
driven pumps at high altitude.
what is the purpose of baffle valves - Answers -to prevent fuel flowing the the wing tips
to keep it in the centre near the pumps
what is a feeder box - Answers -a box arounds the booster pumps that keeps the
pumps submerged in fuel to prevent cavitation
how do you switch off the magneto - Answers -ground the primary circuit
how is the twin jet fuelled - Answers -by fuel being pumped from the fuel truck
what type of fire extinguisher do you use on propane fire - Answers -foam
what is the difference between IAS and CAS (calibrated Airspeed) - Answers -corrected
for instrument positional errors
what is the difference between CAS and TAS (true Airspeed) - Answers -Corrected for
changes in air Density
when is ground effect felt? - Answers -half the wingspan from the ground
what is interference drag? - Answers -Drag caused by interaction of boundary layers at
major aircraft components
what are high aspect ratio wings - Answers -long thin wings
what are low aspect ratio wings - Answers -short fat ones
,why are all jet liners wings swept - Answers -they are better at close to mach
where does the Pulmonary artery pump blood to? - Answers -the lungs
what is reduced when someone hyper ventilates - Answers -CO2
how long such you void flying for after giving blood? - Answers -24 hrs
what percentages of accidents are caused by human error - Answers -70%
What is the tropopause? - Answers -The boundary between the troposphere and the
stratosphere.
Where temp no longer increases with height
what does the air need to be at the summit of a mountain to cause mountain waves? -
Answers -stable
what does they wind need to be doing with increasing altitude to cause mountain
waves? - Answers -increasing
why won't cirrus clouds cause icing - Answers -they are already ice crystals
what side of the polar jet stream in the most turbulence on? - Answers -the cold side
what is Grivation - Answers -the combination of Grid convergence and magnetic
variation
what is ISA? - Answers -Temp 15
Pressure 1013.35
Density 1225
- 2 c per 1000ft
27ft per 1 Hpa
What is pressure Altitude? - Answers -the vertical distance from ISO
how many nautical miles is one degree of latitude? - Answers -60NM
where is the magnetic pole? - Answers -North Canada
what cool would the magnetic pole be? - Answers -blue
what is the formula for rate of descent and ground speed for a 3 degree glide slope -
Answers -5 x Ground speed = Rate of Descent
what air is used to cool the air in the boot leg air conditioning system? - Answers -
Ramp air
, what are the advantages of cruising at high altitudes - Answers -faster
more efficient
above bad weather
what does the pack flow control valve - Answers -controls the flow of bleed air in to the
Air con packs
how many heat exchangers are there is bootstrap system - Answers -2
primary
main(secondary)
For the localiser, what frequency is on the left and right lobes - Answers -left - 90 hz -
Yellow
right - 150 hz - Blue
for the glides slope, what is the frequency of the lobes above and below? - Answers -
above - 90hz - yellow
below - 150hz - blue
what are the colours for the outer, middle and inner marker for the ILS - Answers -outer
- blue
middle - yellow
inner - white
how is an ILS with a DME indicated on a approach chart - Answers -it will have a D
before the ILS frequency
what are the ranges you should be able to pick up the localiser - Answers -25 nm - 10
degrees either side
17 Nm - 35 degrees either side
10NM - 90 either side
at what range does the glide slope have its best accuracy? - Answers -10nm - 8
degrees either side
how does a DME work - Answers -the aircraft sends out a pulse and the ground station
sends it back. depending on the time to recieve it back depends on the distance - Slant
range
What does VOR mean? - Answers -VHF Omnidirectional Range
what range are VOR usable to? - Answers -25 - 140 nm
what is the range of frequency for a VOR - Answers -108- 117.9 Mhz
