©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 2:49PM A+
ATPL Instruments and Navigation Aids
Exam Questions And Answers |Latest 2025 |
Guaranteed Pass.
What is the Mach number formula? - Answer✔Mach numer = TAS/LSS
How do you calculate the LSS? - Answer✔38.94 x square root of temperature in degrees kelvin
What is 0degrees Celsius in Kelvin? - Answer✔273 degrees kelvin
Is the speed of sound faster at higher altitudes or lower - Answer✔Lower
Is the speed of sound faster at higher temperatures or lower? - Answer✔Higher
If altitude is increased at constant TAS does Mach number do? - Answer✔Increase
What is VMO? - Answer✔Maximum operating IAS
What is MMO? - Answer✔The maximum operating speed in Mach.
What errors does the Mach meter suffer from? - Answer✔Instrument, pressure, blockages
If the pitot tube becomes blocked during a climb the Mach meter will... - Answer✔Overead
If the static port becomes blocked during a climb the Mach meter will... - Answer✔Under read
What is the temperature deviation from ISA if an aircraft is at FL340 and has a TAS of 498kts
and a Mach number 0.815? - Answer✔+25.56•c
What is Mach number if TAS is 498kts and LSS is 595 knots? - Answer✔0.837
What is the altitude if a TAS of 395 corresponds to Mach 0.67? - Answer✔FL297
What is the altitude if a TAS of 460knots = 0.73 Mach? - Answer✔13,200ft
What inputs does the ADC get? - Answer✔Pitot, static, total temperature and angle of attack
What outputs does an ADC provide? - Answer✔Altitude, V/S, IAS, Mach Number, VMO and
MMO, AOA, TAT, SAT
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 2:49PM A+
What is TAT? - Answer✔SAT + the maximum Ram rise
What is SAT? - Answer✔TAT corrected for maximum possible Ram rise
What is the formula for calculating Sat? - Answer✔Ts= Tm / (1+(0.2 x k x m^2))
If TAT indicates -26• and aircraft is at mach 0.8 what is the static outside air temp? - Answer✔-
54.02
If an aircraft is travelling at 0.77 and indicating -24• on the TAT the TAS will be? -
Answer✔447.35
What are the 2 types of flight directors? - Answer✔Split cue and intergrated cue
What is PLI? - Answer✔Pitch limit indicators (when stick shaker will engage)
How much margin do pilots get a stall warning - Answer✔5% above stall
What EFIS mode is presented heading up? - Answer✔VOR/APP
What EFIS mode is presented TRK or HDG up? - Answer✔Map
What EFIS mode is presented North up? - Answer✔Plan
What are open loop items - Answer✔Items that must be checked off in a checklist
What are closed loop items? - Answer✔Items that sense switch position and are automatically
checked off
What EFIS symbols are white? - Answer✔Armed flight modes, present status, range scales
What EFIS flight modes are Green - Answer✔Engaged flight mode displays and dynamic
conditions
What EFIS symbols are Magenta? - Answer✔Command information, pointers, fly to confitions
What EFIS symbols are cyan? - Answer✔Inactive background info
What EFIS symbols are Red? - Answer✔Warning condition
What EFIS symbols are Amber? - Answer✔Caution conditions, faults and flags
What EFIS symbols are black? - Answer✔Blank areas
What are the components to a HUD? - Answer✔Combiner, projector, the video generator
computer
Where is the HUD Focussed? - Answer✔It is collimated (infinity)
What is EVS? - Answer✔Enhanced vision system uses infrared
2
ATPL Instruments and Navigation Aids
Exam Questions And Answers |Latest 2025 |
Guaranteed Pass.
What is the Mach number formula? - Answer✔Mach numer = TAS/LSS
How do you calculate the LSS? - Answer✔38.94 x square root of temperature in degrees kelvin
What is 0degrees Celsius in Kelvin? - Answer✔273 degrees kelvin
Is the speed of sound faster at higher altitudes or lower - Answer✔Lower
Is the speed of sound faster at higher temperatures or lower? - Answer✔Higher
If altitude is increased at constant TAS does Mach number do? - Answer✔Increase
What is VMO? - Answer✔Maximum operating IAS
What is MMO? - Answer✔The maximum operating speed in Mach.
What errors does the Mach meter suffer from? - Answer✔Instrument, pressure, blockages
If the pitot tube becomes blocked during a climb the Mach meter will... - Answer✔Overead
If the static port becomes blocked during a climb the Mach meter will... - Answer✔Under read
What is the temperature deviation from ISA if an aircraft is at FL340 and has a TAS of 498kts
and a Mach number 0.815? - Answer✔+25.56•c
What is Mach number if TAS is 498kts and LSS is 595 knots? - Answer✔0.837
What is the altitude if a TAS of 395 corresponds to Mach 0.67? - Answer✔FL297
What is the altitude if a TAS of 460knots = 0.73 Mach? - Answer✔13,200ft
What inputs does the ADC get? - Answer✔Pitot, static, total temperature and angle of attack
What outputs does an ADC provide? - Answer✔Altitude, V/S, IAS, Mach Number, VMO and
MMO, AOA, TAT, SAT
1
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED 2:49PM A+
What is TAT? - Answer✔SAT + the maximum Ram rise
What is SAT? - Answer✔TAT corrected for maximum possible Ram rise
What is the formula for calculating Sat? - Answer✔Ts= Tm / (1+(0.2 x k x m^2))
If TAT indicates -26• and aircraft is at mach 0.8 what is the static outside air temp? - Answer✔-
54.02
If an aircraft is travelling at 0.77 and indicating -24• on the TAT the TAS will be? -
Answer✔447.35
What are the 2 types of flight directors? - Answer✔Split cue and intergrated cue
What is PLI? - Answer✔Pitch limit indicators (when stick shaker will engage)
How much margin do pilots get a stall warning - Answer✔5% above stall
What EFIS mode is presented heading up? - Answer✔VOR/APP
What EFIS mode is presented TRK or HDG up? - Answer✔Map
What EFIS mode is presented North up? - Answer✔Plan
What are open loop items - Answer✔Items that must be checked off in a checklist
What are closed loop items? - Answer✔Items that sense switch position and are automatically
checked off
What EFIS symbols are white? - Answer✔Armed flight modes, present status, range scales
What EFIS flight modes are Green - Answer✔Engaged flight mode displays and dynamic
conditions
What EFIS symbols are Magenta? - Answer✔Command information, pointers, fly to confitions
What EFIS symbols are cyan? - Answer✔Inactive background info
What EFIS symbols are Red? - Answer✔Warning condition
What EFIS symbols are Amber? - Answer✔Caution conditions, faults and flags
What EFIS symbols are black? - Answer✔Blank areas
What are the components to a HUD? - Answer✔Combiner, projector, the video generator
computer
Where is the HUD Focussed? - Answer✔It is collimated (infinity)
What is EVS? - Answer✔Enhanced vision system uses infrared
2
