ATSC 231 Block 4 Exam Questions with
correct Answers
Be iiable iito iiidentify iithe iidefinitions iiof iiVFR, iiVMC, iiIFR iiand iiIMC ii- iiAnswers ii-VFR ii-
iiVisual iiMeteorological iiConditions
IFR ii- iiInstrument iiFlight iiRules
VMC ii- iiVisual iiMeteorological iiConditions
IMC ii- iiInstrument iiMeteorological iiConditions
Compare iithe iifrequency iiof iiicing iiaccidents iirelative iito iiother iiweather iihazards ii-
iiAnswers ii-Part ii121 ii- iionly ii0.8% iiof iiall iiweather iirelated iiaccidents
Part ii135 ii- ii10% iiof iiall iiweather iirelated iiaccidents
part ii91 ii- ii7% iiof iiall iiweather iirelated iiaccidents
What iiare iithe iitrends iiin iistatistical iidata iirelating iito iiicing iiaccidents iiincluding iithe
iifrequency iiof iifatal iiicing iiaccidents, iiratings iiheld, iiflight iiexperience iiand iiphase iiof
iiflight ii- iiAnswers ii-Frequency ii- iiMost iiaccidents iiare iiheld iiby iipart ii91, iiin iiDecember
iiand iijanuary, iiduring iicruise, iiin iilocations iiwith iimountains.
Ratings iiheld ii- iicommercial iior iiprivate iicertificate
Flight iiexperience ii- iipeaks iiat ii500 iihours. iiThe iipilot iitypically iihas iilow iitime iiin iithe
iimake/model ii(no iipilot iiis iiimmune iifrom iiicing)
phase iiof iiflight ii-
Define iiinduction iiicing ii- iiAnswers ii-- iiAll iiicing iithat iiaffects iipowerplant iioperation
What iiare iithe iiconditions iithat iiproduce iicarburetor iiicing ii- iiAnswers ii-• ii80oF iito ii20oF ii
• iiHigh iiHumidity ii
• iiGliding ii(or iiIdle) iiFlight
• iiWator iivapor iipresent
• iiResult iiof: ii
- iiAdiabatic iiPressure iiDrop iiin iiVenturi ii
- iiVaporization iiof iiFuel
What iiare iithe iisymptoms iiof iicarburetor iiicing ii- iiAnswers ii-- iiFixed iiPitch iiProp ii
• iiGradual iiLoss iiof iiPower
• iiEngine iiRoughness
- iiConstant iiSpeed iiProp ii
,• iiGradual iiLoss iiof iiManifold iiPressure
• iiEngine iiRoughness
What iiis iithe iiantidote iifor iicarburetor iiicing ii- iiAnswers ii-• iiCarburetor iiHeat ii
- iiFull iiApplication ii
- iiMay iiTake iiMinutes iito iiReturn iiPower
What iiare iithe iitypes iiof iiairplanes iithat iiare iiaffected iiby iiinlet iiicing ii- iiAnswers ii-•
iiReciprocating iiEngine iiPowered iiAirplanes ii
- iiCarbureted ii
- iiFuel iiInjected ii
• iiTurbine iiPowered iiAirplanes
What iiis iithe iicause iiof iiinlet iiicing iifor iipropeller iidriven iiairplanes ii- iiAnswers ii-- iiImpact
iiIce ii(droplets iifreezing iion iicontact iiwith iithe iiengine)
• iiIFR iiConditions
What iiare iithe iiconditions iithat iiproduce iiinlet iiicing iifor iipropeller iidriven iiairplanes ii-
iiAnswers ii-• iiVisible iiMoisture ii
• iiTemperatures iiLess iiThan ii0oC ii(32oF)
What iiis iithe iiantidote iifor iiinlet iiicing iifor iipropeller iidriven iiairplanes ii- iiAnswers ii-•
iiAlternate iiAir iiSource ii
• iiCarburetor iiHeat
What iiare iithe iihazards iiassociated iiwith iiinlet iiicing iifor iiturbine iipowered iiairplanes ii-
iiAnswers ii-- iiFixed iiPitch iiProp ii
• iiGradual iiLoss iiof iiPower
• iiEngine iiRoughness
- iiConstant iiSpeed iiProp ii
• iiGradual iiLoss iiof iiManifold iiPressure
• iiEngine iiRoughness
What iiare iithe iiconditions iithat iiproduce iiinlet iiicing iifor iiturbine iipowered iiairplanes ii-
iiAnswers ii-- iiForeign iiObject iiDebris ii(FOD)
This iibreaks iioff iiand iidamages iithe iiturbine iiblades
What iiis iithe iiantidote iifor iiinlet iiicing iifor iiturbine iipowered iiairplanes ii- iiAnswers ii-• iiAnti-
Ice
Where iiis iiHIWC iitypically iifound ii- iiAnswers ii-- iiTops iiof iicumulonimbus ii
- iiAnvils
, What iiare iithe iihazards iiassociated iiwith iiHIWC ii- iiAnswers ii-- iiTurbine iiengine
iidegradation ii
- iiFlameout
Which iiPart iiof iithe iiRegulations iispecifically iiaddresses iiflight iiinto iiicing iiconditions ii-
iiAnswers ii-part ii121 iiand iipart ii135 iispecifically iiadress iiicing
What iidoes iithe iiFAA iiinterpret iias ii'known iiice' iiand ii'known iiicing iiconditions' ii-
iiAnswers ii-Known iiIcing iiaka iiknown iiice:
"... iiknown iior iiobserved iior iidetected iiice iiaccretion ii..."
Known iiicing iiconditions:
actual iiice iiobserved iivisually iito iibe iion iithe iiaircraft iiby iithe iiflight iicrew iior iiidentified iiby
iion-board iisensors.
What iiare iithe iiintensities iiof iistructural iiicing ii- iiAnswers ii-- iiTrace ii
- iiLight ii
- iiModerate ii
- iiSevere
What iiare iithe iidefinitions iiand iicharacteristics iiof iithe iidifferent iitypes iiof iiicing ii-
iiAnswers ii-Trace:
• iiIce iibecomes iinoticeable. ii
• iiRate iiof iiaccumulation iislightly iigreater iithan iirate iiof iisublimation.
• iiAccretion iiRate ii- iiLess iithan ii1/4th iiinch iiper iihour
Light:
• iiThe iirate iiof iiaccumulation iirequires iioccasional iicycling iiof iimanual iideicing iisystems
iito iiminimize iiice iiaccretions iion iithe iiairframe.
• iiAccretion iiRate ii- ii1/4th iito ii1 iiinch iiper iihour
Moderate:
• iiRequires iifrequent iicycling iiof iimanual iideicing iisystems iito iiminimize iiice iiaccretion
• iiAccretion iiRate ii- ii1 iito ii3 iiinches iiper iihour
Severe:
• iiThe iirate iiof iiaccumulation iiis iisuch iithat iideicing/antiicing iiequipment iifails iito iiremove
iithe iiaccumulation ii
• iiAccumulation iioccurs iiin iiareas iinot iinormally iiprone iito iiicing
• iiImmediate iiexit iiis iirequired
• iiAccretion iiRate ii- iiMore iithan ii3 iiinches iiper iihour
What iiis iiresidual iiice? ii- iiAnswers ii-• iiIce iiwhich iiremains iion iia iiprotected iisurface
iiimmediately iiafter iithe iiactuation iiof iia iideicing iisystem
correct Answers
Be iiable iito iiidentify iithe iidefinitions iiof iiVFR, iiVMC, iiIFR iiand iiIMC ii- iiAnswers ii-VFR ii-
iiVisual iiMeteorological iiConditions
IFR ii- iiInstrument iiFlight iiRules
VMC ii- iiVisual iiMeteorological iiConditions
IMC ii- iiInstrument iiMeteorological iiConditions
Compare iithe iifrequency iiof iiicing iiaccidents iirelative iito iiother iiweather iihazards ii-
iiAnswers ii-Part ii121 ii- iionly ii0.8% iiof iiall iiweather iirelated iiaccidents
Part ii135 ii- ii10% iiof iiall iiweather iirelated iiaccidents
part ii91 ii- ii7% iiof iiall iiweather iirelated iiaccidents
What iiare iithe iitrends iiin iistatistical iidata iirelating iito iiicing iiaccidents iiincluding iithe
iifrequency iiof iifatal iiicing iiaccidents, iiratings iiheld, iiflight iiexperience iiand iiphase iiof
iiflight ii- iiAnswers ii-Frequency ii- iiMost iiaccidents iiare iiheld iiby iipart ii91, iiin iiDecember
iiand iijanuary, iiduring iicruise, iiin iilocations iiwith iimountains.
Ratings iiheld ii- iicommercial iior iiprivate iicertificate
Flight iiexperience ii- iipeaks iiat ii500 iihours. iiThe iipilot iitypically iihas iilow iitime iiin iithe
iimake/model ii(no iipilot iiis iiimmune iifrom iiicing)
phase iiof iiflight ii-
Define iiinduction iiicing ii- iiAnswers ii-- iiAll iiicing iithat iiaffects iipowerplant iioperation
What iiare iithe iiconditions iithat iiproduce iicarburetor iiicing ii- iiAnswers ii-• ii80oF iito ii20oF ii
• iiHigh iiHumidity ii
• iiGliding ii(or iiIdle) iiFlight
• iiWator iivapor iipresent
• iiResult iiof: ii
- iiAdiabatic iiPressure iiDrop iiin iiVenturi ii
- iiVaporization iiof iiFuel
What iiare iithe iisymptoms iiof iicarburetor iiicing ii- iiAnswers ii-- iiFixed iiPitch iiProp ii
• iiGradual iiLoss iiof iiPower
• iiEngine iiRoughness
- iiConstant iiSpeed iiProp ii
,• iiGradual iiLoss iiof iiManifold iiPressure
• iiEngine iiRoughness
What iiis iithe iiantidote iifor iicarburetor iiicing ii- iiAnswers ii-• iiCarburetor iiHeat ii
- iiFull iiApplication ii
- iiMay iiTake iiMinutes iito iiReturn iiPower
What iiare iithe iitypes iiof iiairplanes iithat iiare iiaffected iiby iiinlet iiicing ii- iiAnswers ii-•
iiReciprocating iiEngine iiPowered iiAirplanes ii
- iiCarbureted ii
- iiFuel iiInjected ii
• iiTurbine iiPowered iiAirplanes
What iiis iithe iicause iiof iiinlet iiicing iifor iipropeller iidriven iiairplanes ii- iiAnswers ii-- iiImpact
iiIce ii(droplets iifreezing iion iicontact iiwith iithe iiengine)
• iiIFR iiConditions
What iiare iithe iiconditions iithat iiproduce iiinlet iiicing iifor iipropeller iidriven iiairplanes ii-
iiAnswers ii-• iiVisible iiMoisture ii
• iiTemperatures iiLess iiThan ii0oC ii(32oF)
What iiis iithe iiantidote iifor iiinlet iiicing iifor iipropeller iidriven iiairplanes ii- iiAnswers ii-•
iiAlternate iiAir iiSource ii
• iiCarburetor iiHeat
What iiare iithe iihazards iiassociated iiwith iiinlet iiicing iifor iiturbine iipowered iiairplanes ii-
iiAnswers ii-- iiFixed iiPitch iiProp ii
• iiGradual iiLoss iiof iiPower
• iiEngine iiRoughness
- iiConstant iiSpeed iiProp ii
• iiGradual iiLoss iiof iiManifold iiPressure
• iiEngine iiRoughness
What iiare iithe iiconditions iithat iiproduce iiinlet iiicing iifor iiturbine iipowered iiairplanes ii-
iiAnswers ii-- iiForeign iiObject iiDebris ii(FOD)
This iibreaks iioff iiand iidamages iithe iiturbine iiblades
What iiis iithe iiantidote iifor iiinlet iiicing iifor iiturbine iipowered iiairplanes ii- iiAnswers ii-• iiAnti-
Ice
Where iiis iiHIWC iitypically iifound ii- iiAnswers ii-- iiTops iiof iicumulonimbus ii
- iiAnvils
, What iiare iithe iihazards iiassociated iiwith iiHIWC ii- iiAnswers ii-- iiTurbine iiengine
iidegradation ii
- iiFlameout
Which iiPart iiof iithe iiRegulations iispecifically iiaddresses iiflight iiinto iiicing iiconditions ii-
iiAnswers ii-part ii121 iiand iipart ii135 iispecifically iiadress iiicing
What iidoes iithe iiFAA iiinterpret iias ii'known iiice' iiand ii'known iiicing iiconditions' ii-
iiAnswers ii-Known iiIcing iiaka iiknown iiice:
"... iiknown iior iiobserved iior iidetected iiice iiaccretion ii..."
Known iiicing iiconditions:
actual iiice iiobserved iivisually iito iibe iion iithe iiaircraft iiby iithe iiflight iicrew iior iiidentified iiby
iion-board iisensors.
What iiare iithe iiintensities iiof iistructural iiicing ii- iiAnswers ii-- iiTrace ii
- iiLight ii
- iiModerate ii
- iiSevere
What iiare iithe iidefinitions iiand iicharacteristics iiof iithe iidifferent iitypes iiof iiicing ii-
iiAnswers ii-Trace:
• iiIce iibecomes iinoticeable. ii
• iiRate iiof iiaccumulation iislightly iigreater iithan iirate iiof iisublimation.
• iiAccretion iiRate ii- iiLess iithan ii1/4th iiinch iiper iihour
Light:
• iiThe iirate iiof iiaccumulation iirequires iioccasional iicycling iiof iimanual iideicing iisystems
iito iiminimize iiice iiaccretions iion iithe iiairframe.
• iiAccretion iiRate ii- ii1/4th iito ii1 iiinch iiper iihour
Moderate:
• iiRequires iifrequent iicycling iiof iimanual iideicing iisystems iito iiminimize iiice iiaccretion
• iiAccretion iiRate ii- ii1 iito ii3 iiinches iiper iihour
Severe:
• iiThe iirate iiof iiaccumulation iiis iisuch iithat iideicing/antiicing iiequipment iifails iito iiremove
iithe iiaccumulation ii
• iiAccumulation iioccurs iiin iiareas iinot iinormally iiprone iito iiicing
• iiImmediate iiexit iiis iirequired
• iiAccretion iiRate ii- iiMore iithan ii3 iiinches iiper iihour
What iiis iiresidual iiice? ii- iiAnswers ii-• iiIce iiwhich iiremains iion iia iiprotected iisurface
iiimmediately iiafter iithe iiactuation iiof iia iideicing iisystem
