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#1. Who prepares National SIGWX Charts
National Significant Weather Charts
All the four MWOs prepare SIGWX charts for their respective FIR and transmit to MWO Chennai, where these are compiled for making a single SIGWX chart. One single SIGWX chart is made for the medium level (between FL 100 and FL 250) and one for high level (between FL 250 and FL630). Zero degree isotherm is included for medium level chart. SIGWX charts are made four times a day based on 00, 06, 12 and 18 UTC data and issued 09 hr after the observation time and are valid for 24 hr.
#2. Flight Level of freezing Level is included in _____ SIGWX Charts
National Significant Weather Charts
All the four MWOs prepare SIGWX charts for their respective FIR and transmit to MWO Chennai, where these are compiled for making a single SIGWX chart. One single SIGWX chart is made for the medium level (between FL 100 and FL 250) and one for high level (between FL 250 and FL630). Zero degree isotherm is included for medium level chart. SIGWX charts are made four times a day based on 00, 06, 12 and 18 UTC data and issued 09 hr after the observation time and are valid for 24 hr.
#3. Fog, Precipitation and weather which reduce visibility below 5000 m is considered Significant weather for
#4. Briefing and Consultation are generally provided to the aircrew ______ hours prior to the scheduled departure
Briefing, Consultation and Display
The purpose of briefing is to provide the actual and forecast weather at the departing base, en-route, destination and alternate aerodromes. It is provided to the flight crew or operationspersonnel, in person, 3 hr priorto the scheduled departure. If not practical, it may be obtained through telephone or other telecommunication facilities.
#5. SIGMET information is provided to
National Significant Weather Charts
All the four MWOs prepare SIGWX charts for their respective FIR and transmit to MWO Chennai, where these are compiled for making a single SIGWX chart. One single SIGWX chart is made for the medium level (between FL 100 and FL 250) and one for high level (between FL 250 and FL630). Zero degree isotherm is included for medium level chart. SIGWX charts are made four times a day based on 00, 06, 12 and 18 UTC data and issued 09 hr after the observation time and are valid for 24 hr.
#6. For Low Level flights, and those under Visual Flight Rules, briefing is given up to
Briefing for Low Level flights, and those under Visual Flight Rules, is given up to FL 100 (or up to FL 150 or above in mountains), poor visibility (5000m or less), any phenomena likely to lower widespread visibility to less than 5000 m, clouds which may affect flight, and SIGMET information.
#7. The height indications in the Flight Documentation in all en-route Met conditions : eg upper winds, turbulence, cloud base/top etc is
#8. The height indications in the Flight Documentation in all aerodrome Met conditions : eg base and top of clouds
#9. For National Flights the Documents provided are –
#10. For National Flights the winds and temperatures are provided for LL Flights for altitudes
