NEW
Font size
WorksheetsCHƯƠNG 21: METEOROLOGICAL SERVICES FOR AVIATION
Total questions: 45
Worksheet time: 23mins
For non-scheduled National Flights an advance notice (before ETD) is required to be given to AMOs
3 hr
18-24 hr
6 hr
For non-scheduled National Flights an advance notice (before ETD) is required to be given to AMS
3 hr
18-24 hr
6 hr
WAFS provides high quality en-route forecasts of ….. to Met Offices.
high quality en-route forecasts of winds and temperature
SIGMET
TREND
IMD has …… Regional Met offices.
4
5
6
There are …… Aerodrome Met Offices.
17
18
19
There are …… Aeronautical Met Stations.
56
54
52
In AIREP the Met Information is contained in Section
1
2
3
TAF are generally valid for
18 hr
12 hr
9 hr
The validity of Landing Forecast (TREND) is
1 hr
2 hr
3 hr
Landing Forecast is append to
METAR and SPECI
TAF
AIREP
Local/Area Forecast is issued three times a day valid for next
18 hr
12 hr
9 hr
Area Forecast covers an area
100 NM
100 km
50 NM
Global SIGWX Charts are issued by
WMO
AMO
WAFC
Global SIGWX Charts are valid for
18 hr
24 hr
9 hr
Global SIGWX Charts for high-level are issued for Flight Levels
250 & 630
460 & 100
460 & 260
CODAR is
Radar Report
Coded ARFOR
Report from an aircraft, other than weather reconnaissance aircraft
WINTEM is
Actual upper winds
Forecast upper winds
Actual temperature and upper winds
SIGMET is a notice of severe weather for
Actual
Expected
Both
SIGMET is issued for
In flight
On ground
Both
SIGMET is issued by
WAEC
AMO
MWO
SIGMET is valid for
4 hr
8 hr
9 hr
SIGMET is not issued for
Rain
Volcanic Ash
SEV icing
AIREP in SIGMET issued by a MWO for the safety of
Low-level aircraft
High-level flights
All level flights
GAMET is an area forecast in abbreviated plain language for
Low level flights
High level flights
All level flights
The validity of Airfield warning is not exceeding
3 hr
4 hr
6 hr
Airfield warning is issued for expected wind speed
30 kt
24 kt
15 kt
Airfield warning is issued for wind direction of 20 kt changes by
45°
30°
60°
Airfield Warning for gliders, light aircraft and helicopters is issued for expected wind speed
15 kt
17 kt
30 kt
Wind Shear Warning is issued for the observed or expected wind shear above runway
up to 500 m
above 500 m
both
VOLMET is a MET information for aircraft
on ground
in flight
both
VOLMET Radio Telephony Broadcast made on HF Channel from
Mumbai only
Kolkata only
Both Kolkata and Mumbai
VOLMET consists of
SIGMET
TAF only
TAF and METAR
In ROBEX the METAR/SPECI of international aerodromes and their alternates is exchanged
within India
outside India
both
Global SIGWX Charts are issued ____ times a day
Two
Three
Four
Global SIGWX Charts for Medium-level are issued for Flight Levels
150 & 200
100 & 250
100 & 150
In India who compiles a single National SIGWX chart:
New Delhi
Mumbai
Kolkata
Chennai
The Indian National SIGWX chart is made for Medium Levels between Flight Levels
150 & 200
100 & 250
100 & 150
The Indian National SIGWX chart is valid for
24 hr
18 hr
12 hr
In India the National SIGWX chart is issued
2 times a day
4 times a day
6 times a day
Individual TS which cover less than 50% area, is termed as
FRQ
ISOL
OCNL
If TS cells have no separation between adjacent TS and cover an area more than 75%, it is termed as
FRQ
ISOL
OCNL
If TS cells are well separated and cover an area 50 - 75%, it is termed as
FRQ
ISOL
OCNL
The Indian National SIGWX chart is made for High Levels between Flight Levels
150 & 200
100 & 250
100 & 150
FL250 and FL630
Local Forecast covers an area
100 NM
100 km
50 NM
Nowcasting forecast is valid for:
30 hr
48 hr
less than 24 hr
