Aerodrome Met Reports — METAR, SPECI & TRENDAviation Meteorology — DGCA CPL practice questions
Question 1 of 22
The landing forecast appended to any METAR is valid for
All 22 questions — Aerodrome Met Reports — METAR, SPECI & TREND
Aviation Meteorology · DGCA CPL. The correct option is marked on each.
Q1. The landing forecast appended to any METAR is valid for
- A.1 hr
- B.2 hr✓
- C.3 hr
Why: A TREND forecast attached to a METAR/SPECI is valid for 2 hours from the report time.
Q2. The difference between TT and TdTd is 3°C. The atmosphere is
- A.Very Dry
- B.Moist✓
- C.Saturated
Why: A small temperature/dew-point spread indicates near-saturated, moist air; 0°C spread would be saturated.
Q3. Range of pressure as Q1003 is
- A.1002.5 to 1003.5 hPa
- B.1003.0 to 1003.5 hPa
- C.1003.0 to 1003.9 hPa✓
Why: QNH is rounded down to the whole hPa, so Q1003 covers 1003.0 to 1003.9 hPa.
Q4. Temperature reported as 32°C is
- A.31.4 to 32.3°C
- B.32.1 to 32.4°C
- C.31.5 to 32.4°C✓
Why: Temperature is rounded to the nearest whole degree, so 32 represents 31.5 to 32.4°C.
Q5. Visibility is reported in steps of 50 m when visibility is
- A.800 m to 5000 m
- B.0 to 800 m✓
- C.5000 m to 10 km
Why: Visibility is coded in 50 m steps from 0 up to 800 m.
Q6. Visibility reported in steps of 100 m when visibility is
- A.800 m to 5000 m✓
- B.0 to 800 m
- C.5000 m to 10 km
Why: Visibility is coded in 100 m steps between 800 m and 5000 m.
Q7. Visibility reported in steps of 1000 m when visibility is
- A.800 to 5000 m
- B.0 to 800 m
- C.5000 m to 9999✓
Why: Visibility is coded in 1000 m steps from 5000 m up to 9999.
Q8. Visibility reported 9999 when visibility is
- A.800 to 5000 m
- B.9000 to 9999 m
- C.10 km or more✓
Why: The code 9999 is used when visibility is 10 km or more.
Q9. Temperature +2.5°C is reported as
- A.02
- B.03✓
- C.2.5°C
Why: Half-degree rounds up, so +2.5°C is reported as 03.
Q10. Temperature −12.5°C is reported as
- A.−12
- B.−13
- C.M 12✓
Why: Negative temperatures use the M prefix; −12.5°C rounds to M12, and only the M-form is the valid METAR notation.
Q11. Pressure rounded to nearest whole number in hectopascal
- A.exact value
- B.upper value
- C.lower value✓
Why: QNH in the pressure group is always rounded down to the next lower whole hPa.
Q12. QNH 1002.6 hPa is reported as
- A.Q1002✓
- B.Q1003
- C.Q1002.6
Why: QNH is rounded down to the whole hPa, so 1002.6 becomes Q1002.
Q13. QNH 29.92 inches is reported as
- A.Q2900
- B.A2992✓
- C.A 3000
Why: Altimeter setting in inches uses the A prefix with hundredths, so 29.92 in is A2992.
Q14. Fog is reported when visibility is
- A.<1000 m✓
- B.1000 m
- C.>1000 m
Why: Fog is reported when visibility is less than 1000 m.
Q15. Mist is reported when visibility is
- A.<1000 m to 2000 m
- B.1000 to 5000 m✓
- C.>1000 m
Why: Mist is reported when visibility is between 1000 m and 5000 m.
Q16. CAVOK signifies Visibility, Cloud… and present weather better than the prescribed values or conditions
- A.ceiling✓
- B.base
- C.amount
Why: CAVOK stands for Ceiling And Visibility OK; the cloud element referred to is the ceiling.
Q17. CAVOK is issued when visibility is
- A.9–10 km
- B.10 km or more✓
- C.10 km only
Why: CAVOK requires visibility of 10 km or more.
Q18. CAVOK is issued when: (i) Vis 10 km or more; (ii) No cloud below 1500m or below highest MSA; (iii) No CB.
- A.Any one condition
- B.Any two conditions
- C.All the three conditions✓
Why: CAVOK is used only when all three conditions are met.
Q19. SPECI is issued when
- A.Any one /✓
- B.Any two /
- C.All three
Why: A SPECI is issued as soon as any single reporting criterion for change is met.
Q20. SPECI is issued for vertical visibility, by stations having Ceilograph, when sky is obscured
- A.True✓
- B.False
Why: Stations equipped to measure vertical visibility issue SPECI for changes in VV when the sky is obscured.
Q21. WSRWY28 indicates that the wind shear has been reported for
- A.take off path
- B.approach path
- C.both take off and approach paths✓
Why: WS RWY28 denotes wind shear along runway 28, covering both the take-off and approach paths of that runway.
Q22. R26/M0150 in a METAR indicates that
- A.maximum RVR is 150 m
- B.minimum RVR is 150 m
- C.150 m is the lowest RVR instrument can measure and RVR < 150 m✓
Why: Prefix M means 'less than'; 150 m is the lowest value the RVR instrument can assess, so actual RVR is below 150 m on runway 26.