FDOPSl 1l Examl Reviewl (NEWl 2025/l
2026l Update)l Questionsl &l Answers|l
Gradel A|l 100%l Correctl (Verifiedl
Solutions)
QUESTION
Whatl isl al TAF?
Answer:
Thel Terminall Areal Forecastl (l TAFl )
Isl thel officiall FAAl forecastl ofl aviationl activityl forl U.S.l airports.l Itl containsl activel
airportsl includingl FAAl -toweredl airports,l Federall contract-toweredl airports,l non-federall
toweredl airports,l andl non-toweredl airports.
-----------------------------------------------------
TAFl Frequency:l 4xl Dayl (Everyl 6l hrs.),l thel standardl issuel timesl arel 00Z,l 06Z,l 12Z,l
andl 18Z.
Validl for:l 24l Hrs.
Level:l Surface.
Area:l 5l NM
QUESTION
TEMPOl /l FROMl /l BCMGl /l PROBl inl al TAF:
Answer:
TEMPOl isl usedl forl anyl conditionsl inl wind,l visibility,l weather,l orl skyl arel expectedl tol
lastl forl lessl thanl anl hourl atl al timel (occasional),
FROMl isl usedl whenl al rapidl change,l usuallyl occurringl inl lessl thanl onel hour,
BECMGl isl usedl whenl al graduall changel inl conditionsl isl expectedl overl al longerl timel
period,l usuallyl twol hours.
PROB40l isl usedl whenl thel occurrencel ofl thunderstormsl orl precipitationl isl inl thel 30%l
tol lessl thanl 50%l range,
,QUESTION
Ceilingl andl Cloudl Coverage?
Answer:
(Abbrev.l CIG)l -l Isl thel heightl ofl thel cloudl basel forl thel lowestl brokenl orl overcastl
cloudl layer.l Itl canl bel reportedl asl Broken,l Overcastl orl Ifl thel skyl isl totallyl obscured,l
heightl ofl verticall visibilityl isl usedl asl thel ceiling.
---------------------------------------------------
Cloudl coverl isl reportedl inl termsl ofl 1/8thl ofl skyl cover.
FEWl 1-2/8th,l SCTl 3-4/8ths,l BKNl 5-7/8thl andl OVCl 8/8.
---------------------------------------------------
Cloudsl heightsl arel reportedl inl feetl AGL
QUESTION
Decodingl notes:
Answer:
TSNO:l Lightningl Detectionl inop
BLDU:l Blowingl dust
FROPA:l Frontall passage
QUESTION
Whatl SIGMETl &l CONVECTIVEl SIGMETl ?
Answer:
Al Significantl Meteorologicall Informationl (SIGMET)l advisesl aboutl non-convectivel
weatherl conditionsl thatl couldl posel significantl hazardsl tol aircraft.l Thesel include:
a.l Severel icingl notl associatedl withl thunderstorms.
b.l Severel orl extremel turbulence,l includingl Clearl Airl Turbulencel (CAT),l notl associatedl
withl thunderstorms.
c.l Dustl stormsl orl sandstormsl causingl surfacel orl in-flightl visibilityl tol dropl belowl 3l
miles.
d.l Presencel ofl volcanicl ashl inl thel atmosphere.
,----------------------------------------------------
Al convectivel SIGMETl isl issuedl tol warnl ofl severel storml activity,l includingl dangerousl
thunderstorms,l heavyl rainl affectingl al significantl portionl ofl thel area,l andl possiblel
tornadoes.l Itl mayl alsol involvel haill ofl atl leastl ¾l ofl anl inch,l windl shear,l andl sustainedl
windsl ofl atl leastl 50l knots.
----------------------------------------------------
SIGMETs:
Frequency:l SIGMETS:l Unscheduled.l CONVECTIVEl SIGMETS:l Hourly
Validl For:l 4l Hrs.
Levels:l Surfacel tol Alll Flightl Levels
Area:l 48l Statesl (mustl affectl 3000l squarel miles)
SIGMETsl relatedl tol volcanicl ashl andl tropicall cyclonesl arel validl forl upl tol 6l hours.
QUESTION
Whatl doesl ATISl standl for?
Answer:
ATISl /l Automaticl Terminall Informationl Service.
ATISl It'sl al recordedl broadcastl atl airportsl thatl providesl essentiall informationl tol pilotsl
beforel theyl landl orl takel off.l Thisl informationl includesl detailsl likel weatherl conditions,l
activel runways,l andl otherl importantl updatesl aboutl thel airport.l Thisl eliminatesl thel needl
forl controllersl tol repeatl thel samel informationl overl andl overl forl arrivingl andl departingl
pilots.l Busyl terminall areasl mayl havel twol ATISl broadcasts,l onel forl arrivalsl andl onel forl
departures.
QUESTION
Whatl arel thel threel necessaryl "ingredients"l tol createl al Thunderstorml (TS)l andl howl arel
generated?
Answer:
-l Sourcel regionl (Moisture)term-25
-l Convectivel Airl (Liftingl Action)
-l Unstablel Air
----------------------------------------------------
, Warm,l moistl airl isl pushedl upl byl al coldl airl massl andl becomesl unstable.l Whenl rising,l
airl cools,l maximuml saturationl isl reachedl andl cumulonimbusl cloudsl form.
QUESTION
Whatl isl Convectivel weather?
Answer:
Convectivel weatherl involvesl thel verticall movementl ofl air,l leadingl tol cloudl formation,l
precipitation,l andl thunderstorms.l Warml airl rises,l cools,l andl formsl clouds,l oftenl resultingl
inl rain,l hail,l orl snow.l Thunderstormsl withl lightningl andl heavyl rainl arel common.l
Convectivel weatherl isl localizedl andl canl bel challengingl tol predictl precisely.l Itl playsl al
vitall rolel inl Earth'sl weatherl patternsl andl canl leadl tol severel weatherl events.
QUESTION
Whatl isl anl AIRMETl /l Typesl ofl AIRMETSl andl Duration?
Answer:
AIRMET,l Airmen'sl Meteorologicall Information.
Isl al weatherl advisoryl forl pilotsl thatl warnsl ofl lessl severel butl potentiallyl hazardousl
weatherl conditions,l likel moderatel icing,l minorl tol moderatel turbulence,l reducedl visibility,l
thunderstorms,l andl windsl whichl arel sustainedl atl greaterl thanl 30l knots.l Dispatchersl usel
AIRMETsl tol makel informedl decisionsl aboutl theirl flightsl andl routel planningl tol ensurel
safety.
-----------------------------------------------------
Typesl ofl AIRMETS:
Tangol -l Turbulence
Zulu-l Ice
Sierral -l (IFR,l orl Instrumentl Flightl Rules)
Whenl ceilingsl arel lessl thanl 1000l feet.l Mountainl Obscurations
-----------------------------------------------------Frequency:l Issuedl forl 6l Hrs.l periods.l (4xl Day)l
(Everyl 6l Hrs)(Startingl 0245Z...)l orl Asl Required.
Validl For:l 6l Hrs
Levels:l Surfacel tol Alll Flightl Levels
2026l Update)l Questionsl &l Answers|l
Gradel A|l 100%l Correctl (Verifiedl
Solutions)
QUESTION
Whatl isl al TAF?
Answer:
Thel Terminall Areal Forecastl (l TAFl )
Isl thel officiall FAAl forecastl ofl aviationl activityl forl U.S.l airports.l Itl containsl activel
airportsl includingl FAAl -toweredl airports,l Federall contract-toweredl airports,l non-federall
toweredl airports,l andl non-toweredl airports.
-----------------------------------------------------
TAFl Frequency:l 4xl Dayl (Everyl 6l hrs.),l thel standardl issuel timesl arel 00Z,l 06Z,l 12Z,l
andl 18Z.
Validl for:l 24l Hrs.
Level:l Surface.
Area:l 5l NM
QUESTION
TEMPOl /l FROMl /l BCMGl /l PROBl inl al TAF:
Answer:
TEMPOl isl usedl forl anyl conditionsl inl wind,l visibility,l weather,l orl skyl arel expectedl tol
lastl forl lessl thanl anl hourl atl al timel (occasional),
FROMl isl usedl whenl al rapidl change,l usuallyl occurringl inl lessl thanl onel hour,
BECMGl isl usedl whenl al graduall changel inl conditionsl isl expectedl overl al longerl timel
period,l usuallyl twol hours.
PROB40l isl usedl whenl thel occurrencel ofl thunderstormsl orl precipitationl isl inl thel 30%l
tol lessl thanl 50%l range,
,QUESTION
Ceilingl andl Cloudl Coverage?
Answer:
(Abbrev.l CIG)l -l Isl thel heightl ofl thel cloudl basel forl thel lowestl brokenl orl overcastl
cloudl layer.l Itl canl bel reportedl asl Broken,l Overcastl orl Ifl thel skyl isl totallyl obscured,l
heightl ofl verticall visibilityl isl usedl asl thel ceiling.
---------------------------------------------------
Cloudl coverl isl reportedl inl termsl ofl 1/8thl ofl skyl cover.
FEWl 1-2/8th,l SCTl 3-4/8ths,l BKNl 5-7/8thl andl OVCl 8/8.
---------------------------------------------------
Cloudsl heightsl arel reportedl inl feetl AGL
QUESTION
Decodingl notes:
Answer:
TSNO:l Lightningl Detectionl inop
BLDU:l Blowingl dust
FROPA:l Frontall passage
QUESTION
Whatl SIGMETl &l CONVECTIVEl SIGMETl ?
Answer:
Al Significantl Meteorologicall Informationl (SIGMET)l advisesl aboutl non-convectivel
weatherl conditionsl thatl couldl posel significantl hazardsl tol aircraft.l Thesel include:
a.l Severel icingl notl associatedl withl thunderstorms.
b.l Severel orl extremel turbulence,l includingl Clearl Airl Turbulencel (CAT),l notl associatedl
withl thunderstorms.
c.l Dustl stormsl orl sandstormsl causingl surfacel orl in-flightl visibilityl tol dropl belowl 3l
miles.
d.l Presencel ofl volcanicl ashl inl thel atmosphere.
,----------------------------------------------------
Al convectivel SIGMETl isl issuedl tol warnl ofl severel storml activity,l includingl dangerousl
thunderstorms,l heavyl rainl affectingl al significantl portionl ofl thel area,l andl possiblel
tornadoes.l Itl mayl alsol involvel haill ofl atl leastl ¾l ofl anl inch,l windl shear,l andl sustainedl
windsl ofl atl leastl 50l knots.
----------------------------------------------------
SIGMETs:
Frequency:l SIGMETS:l Unscheduled.l CONVECTIVEl SIGMETS:l Hourly
Validl For:l 4l Hrs.
Levels:l Surfacel tol Alll Flightl Levels
Area:l 48l Statesl (mustl affectl 3000l squarel miles)
SIGMETsl relatedl tol volcanicl ashl andl tropicall cyclonesl arel validl forl upl tol 6l hours.
QUESTION
Whatl doesl ATISl standl for?
Answer:
ATISl /l Automaticl Terminall Informationl Service.
ATISl It'sl al recordedl broadcastl atl airportsl thatl providesl essentiall informationl tol pilotsl
beforel theyl landl orl takel off.l Thisl informationl includesl detailsl likel weatherl conditions,l
activel runways,l andl otherl importantl updatesl aboutl thel airport.l Thisl eliminatesl thel needl
forl controllersl tol repeatl thel samel informationl overl andl overl forl arrivingl andl departingl
pilots.l Busyl terminall areasl mayl havel twol ATISl broadcasts,l onel forl arrivalsl andl onel forl
departures.
QUESTION
Whatl arel thel threel necessaryl "ingredients"l tol createl al Thunderstorml (TS)l andl howl arel
generated?
Answer:
-l Sourcel regionl (Moisture)term-25
-l Convectivel Airl (Liftingl Action)
-l Unstablel Air
----------------------------------------------------
, Warm,l moistl airl isl pushedl upl byl al coldl airl massl andl becomesl unstable.l Whenl rising,l
airl cools,l maximuml saturationl isl reachedl andl cumulonimbusl cloudsl form.
QUESTION
Whatl isl Convectivel weather?
Answer:
Convectivel weatherl involvesl thel verticall movementl ofl air,l leadingl tol cloudl formation,l
precipitation,l andl thunderstorms.l Warml airl rises,l cools,l andl formsl clouds,l oftenl resultingl
inl rain,l hail,l orl snow.l Thunderstormsl withl lightningl andl heavyl rainl arel common.l
Convectivel weatherl isl localizedl andl canl bel challengingl tol predictl precisely.l Itl playsl al
vitall rolel inl Earth'sl weatherl patternsl andl canl leadl tol severel weatherl events.
QUESTION
Whatl isl anl AIRMETl /l Typesl ofl AIRMETSl andl Duration?
Answer:
AIRMET,l Airmen'sl Meteorologicall Information.
Isl al weatherl advisoryl forl pilotsl thatl warnsl ofl lessl severel butl potentiallyl hazardousl
weatherl conditions,l likel moderatel icing,l minorl tol moderatel turbulence,l reducedl visibility,l
thunderstorms,l andl windsl whichl arel sustainedl atl greaterl thanl 30l knots.l Dispatchersl usel
AIRMETsl tol makel informedl decisionsl aboutl theirl flightsl andl routel planningl tol ensurel
safety.
-----------------------------------------------------
Typesl ofl AIRMETS:
Tangol -l Turbulence
Zulu-l Ice
Sierral -l (IFR,l orl Instrumentl Flightl Rules)
Whenl ceilingsl arel lessl thanl 1000l feet.l Mountainl Obscurations
-----------------------------------------------------Frequency:l Issuedl forl 6l Hrs.l periods.l (4xl Day)l
(Everyl 6l Hrs)(Startingl 0245Z...)l orl Asl Required.
Validl For:l 6l Hrs
Levels:l Surfacel tol Alll Flightl Levels
