DGCA Meteorology: Met Services for Aviation Questions
157 exam-style Met Services for Aviation questions for the DGCA Meteorologypaper (CPL & ATPL). The first 12 are free below with answers and explanations — sign up free to practise all of them with progress tracking.
- Q1
In a METAR report, cloud height is found in:
- AWind group
- BCloud group
- CTemperature group
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Correct answer: B. Cloud group
Cloud height, like 'BKN020,' is listed in the METAR’s cloud group.
- Q2
In a METAR, time is reported in:
- ALocal time
- BUTC
- CIST
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Correct answer: B. UTC
METARs use UTC for time to keep things standard worldwide.
- Q3
The validity of Landing Forecast (TREND) is
- A1 hr
- B2 hr
- C3 hr
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Correct answer: B. 2 hr
A landing (TREND) forecast appended to a METAR or SPECI is valid for 2 hours from the time of the report.
- Q4
In a TAF, information regarding CB cloud height can be found in the section on:
- AWind forecast
- BForecast cloud group
- CTemp
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Correct answer: B. Forecast cloud group
TAF lists CB heights, like 'BKN030CB,' in the cloud forecast section.
- Q5
In a TAF, SHRA indicates rainfall of type:
- AContinuous rain
- BShowers of rain occurring within the mentioned time group
- CDrizzle
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Correct answer: B. Showers of rain occurring within the mentioned time group
SHRA means short bursts of rain, typical of convective showers.
- Q6
The validity of a TAF is
- A9 hours from the time of issue
- Bstated in the TAF
- Cbetween 6 and 9 hours
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Correct answer: B. stated in the TAF
The period of validity of a TAF is stated in the TAF itself in its date-time validity group; TAF validity periods vary (commonly 9 to 30 hours), so no single fixed duration applies.
- Q7
Refer to the TAF for Amsterdam airport. FCNL31 281500 EHAM 281601 14010KT 6000 -RA SCT025 BECMG 1618 12015G25KT SCT008 BKN013 TEMPO 1823 3000 RA BKN005 OVC010 BECMG 2301 25020KT 8000 NSW BKN020 = Flight from Bordeaux to Amsterdam, ETA 2100 UTC. What lowest cloud base is forecast for arrival at Amsterdam?
- A800 FT
- B500 m
- C500 FT
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Correct answer: C. 500 FT
At ETA 2100 UTC the TEMPO 1823 group applies, forecasting temporary conditions of broken cloud at 005, i.e. a lowest cloud base of 500 ft; TAF cloud heights are given in hundreds of feet, not metres.
- Q8
Refer to the following TAF for Zurich.LSZH 061019 20018G30KT 9999 -RA SCT050 BKN080 TEMPO 23012KT 6000 -DZ BKN015 BKN030 BECMG 1518 23020G35KT 4000 RA OVC010=The lowest cloud base forecast at ETA Zurich (1200 UTC) is:
- A1500 m.
- B1500 FT.
- C5000 FT.
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Correct answer: B. 1500 FT.
At the 1200 UTC ETA the TEMPO group applies, giving temporary broken cloud at 015, i.e. a lowest forecast base of 1500 ft; TAF cloud bases are coded in hundreds of feet.
- Q9
What does a METAR question on FU (smoke) indicate?
- ASmoke is reducing visibility
- BHeavy rain is forecast
- CFog is forming rapidly
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Correct answer: A. Smoke is reducing visibility
FU is the METAR code for smoke, so its presence in a report indicates that smoke particles are reducing the visibility; it says nothing about rain or fog.
- Q10
Refer to the following TAF extract: BECMG 1821 2000 BKN004 PROB30 BECMG 2124 0500 FG VV001 What does the “BECMG” data indicate for the 18 to 21 hour time frame?
- AA quick change to new conditions between 1800 UTC and 1900 UTC
- BMany short term changes in the original weather
- CMany long term changes in the original weather
- DThe new conditions are achieved between 1800 and 2100 UTC
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Correct answer: D. The new conditions are achieved between 1800 and 2100 UTC
This Explanation is Coming Soon
- Q11
The cloud base, reported in the METAR, is the height above
- Aairfield level
- Bmean sea level
- Cthe pressure altitude of the observation station at the time of observation
- Dthe highest terrain within a radius of 8 km from the observation station
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Correct answer: A. airfield level
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- Q12
Appended to a METAR you get the following runway report: 01650428 What must you consider when making performance calculations?
- AThe braking action will be medium to good
- BThe runway will be wet
- CAquaplaning conditions
- DThe friction coefficient is 0.28
Show answer
Correct answer: D. The friction coefficient is 0.28
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