METEOROLOGICAL INFORMATION FOR GENERAL AVIATION IN SLOVENIA

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METEOROLOGICAL INFORMATION FOR GENERAL AVIATION
IN SLOVENIA
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ATS OPERATIONAL STRUCTURE

• GA FLIGHTS REPRESENTS 90 OF VFR FLIGHTS
• SERVICES FOR VFR FLIGHTS
• AIR TRAFFIC SERVICES REPORTING OFFICE - ARO
• FLIGHT INFORMATION SERVICE - FIS,
• ALERTING SERVICE - ALRS,
• APPROACH CONTROL SERVICE - APP
• AERODROME CONTROL SERVICE - TWR

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AIRSPACE DELEGATION

• TWR RESPONSIBLE FOR VFR TRAFFIC IN CTR - D
  CLASS AIRSPACE
• FIS OPERATES WITH VFR TRAFFIC ALONG PUBLISHED
  VFR ROUTES AND AROUND CTR ENTRY- EXIT POINTS
• E AND G CLASS AIRSPACE

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AIRSPACE DELEGATION

• APP RESPONSIBLE FOR VFR TRAFFIC WITHIN TMA IN C
  CLASS AIRPACE AND ON ROUTES IN D CLASS AIRSPACE
  - ABOVE E CLASS AIRSPACE
• ACC ABOVE FL 245 IN C CLASS AIRPACE WHERE VFR
  TRAFFIC IS NOT ALOWED

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ICAO AIRSPACE CLASSES
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AIRSPACE CLASSES CONCEPT
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VERTICALCROSSECTION
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VERTICAL CROSSECTION ALPS AREA
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VFR GENERAL RULES

• APPROVED DURING THE HOURS OF DAYLIGHT EXCEPT
  NIGHT VFR FLIGHTS
• UP TO FL 200
• IN VMC EXCEPT SPECIAL VFR FLIGHTS
• WITHIN AND OUTSIDE OF THE CONTROLLED AIRSPACE
• WITH CRUISING LEVELS ACCORDING TO THE
  SEMI-CIRCULAR RULES
• WITH MAX. 250 KTS BELOW FL 100 EXCEPT FOR
  MILITARY AIRCRAFT.

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SPECIAL VFR FLIGHTS - SVFR

• MAY BE CONDUCTED
• WITHIN CTR INDIVIDUALLY ONLY
• DURING THE HOURS OF DAYLIGHT
• IF FLIGHT VISIBILITY IS AT LEAST 1.5 KM
• HELICOPTERS MAY BE OPERATED WITH A FLIGHT
  VISIBILITY BELOW 1.5 KM. THE SPEED MUST BE
  ADJUSTED TO THE METEO CONDITIONS
• IF TRAFFIC CONDITIONS PERMIT
• IF THE GROUND VISIBILITY (Met. visibility not
  RVR) IS AT LEAST 1500 M, FOR HELICOPTERS AT LEAST
  800 M.

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FLIGHTS ABOVE CLOUD LAYER

• ARE PERMITTED WHEN
• THE HEIGHT IS AT LEAST 1000 FT ABOVE GROUND OR
  WATER AND THE VISUAL FLIGHT RULES AS IN AIRSPACE
  E ARE COMPLIED WITH
• THE PILOT IS ABLE TO ADHERE TO THE INTENDED
  FLIGHT ROUTE
• APPROACH TO THE DESTINATION AERODROME AND LANDING
  ARE POSSIBLE ACCORDING TO VISUAL FLIGHT RULES.
• IN AIRSPACE CLASS G BELOW 3.000 FT AMSL OR
  1.000 FT GND FLIGHTS ABOVE A SOLID CLOUD LAYER
  ARE NOT PERMITTED!

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NIGHT VFR FLIGHTS

• ARE PERMITTED WHEN
• VMC AND VISUAL REFERENCE TO GROUND
• CEILING IS AT 1500 FT OR HIGHER AND GROUND
  VISIBILITY IS 8 KM OR MORE
• AIRCRAFT ARE PROPERLY EQUIPPED FOR NVFR
• AIRCRAFT HAS SUITABLE COMMUNICATION AND
  NAVIGATION EQUIPEMENT
• TRANSPONDER IS USED WHEN FLYING OUTSIDE CTR
• RADIO COMMUNICATION IS ESTABLISHED ALSO IN CLASS
  E AND G AIRSPACE
• FPL IS SUBMITTED

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ALTIMETER SETTING

• THE ALTIMETER HAS TO BE SET TO QNH AT OR BELOW
  10500 FT AMSL.
• THE ACTUAL QNH CAN BE OBTAINED FROM LJUBLJANA
  INFORMATION SERVICE, OR FROM OTHER CONTROL UNITS
  TWR, APP, OR BY ATIS
• THE TRANSITION FL DEPENDS ON QNH AND MAY BE
  OBTAINED FROM ATC OR FIS LJUBLJANA.
• FLIGHTS BELOW THE TRANSITION FL SHOULD HAVE THEIR
  ALTIMETER SET ON QNH. FLIGHTS ABOVE THE
  TRANSITION ALTITUDE SHOULD HAVE THEIR ALTIMETER
  SET ON QNE 1013.2 HPa.

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SEMI CIRCULAR CRIUSING LEVELS

• SEMICIRCULAR RULES MUST BE APPLIED IN RELATION TO
  FLIGHT DIRECTIONS. ODD/EVEN FL 500 FT ARE
  APPLIED AS FOLLOWS

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SLOVENIAN VFR ROUTE ALOCCATION

• DEPENDS ON TERRAIN

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AND AIRPORT POSITIONS
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SLOVENIAN VFR ROUTE ALOCCATION
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METEO INFORMATION TRANSMITTED TO THE AIRCRAFT
EN-ROUTE

• METAR UPON PILOT REQUEST
• OBSERVATION BY TWR UNIT IN CASE OF SIGNIFICANT
  WHEATHER PHENOMENA IN THE VICINITY
• RADAR OBSERVATION ON DEVELOPING THUNDERSTORMS IN
  THE AREA
• WARNINGS SUCH AS TURBULENCE, CB AND WIND SHEAR
• ICING REPORTS

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METEO INFORMATION TRANSMITTED TO THE ARRIVING
AICRAFT

• SURFACE WIND DIRECTION AND SPEED
• VISIBILITY
• PRESENT WEATHER
• CLOUD BELOW 5000 FT OR BELOW HIGHEST MSA
  WHICHEVER GREATER, CUMULONIMBUS
• AIR TEMPERATURE
• DEW POINT
• ALTIMETER SETTING
• INFORMATION ABOUT SIGNIFICANT WEATHER PHENOMENA
  IN THE APPROACH AREA
• TREND TYPE LANDING FORECAST WHEN AVAILABLE

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METEO INFORMATION TRANSMITTED TO THE AICRAFT ON
THE FINAL APPROACH

• SIGNIFICANT CHANGES IN THE MEAN SURFACE WIND
  DIRECTION AND SPEED
• MEAN HEADWIND COMPONENT 19 Km/h(10kt)
• MEAN TAILWIND COMPONENT 4 Km/h (2kt)
• MEAN CROSSWIND COMPONENT 9 Km/h (5kt)
• THE LATEST INFORMATION ABOUT WIND SHEAR AND/OR
  TURBULENCE IN THE FINAL APPROACH AREA
• CURRENT VISIBILITY REPRESENTATIVE OF THE
  DIRECTION OF APPROACH AND LANDING

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METEO INFORMATION AVAILABILITY

• METEO OFFICE ON THE CONTROLLED AIRPORTS,
  COLOCATED WITH ARO
• ATIS ON FREQUENCIES 128,175 MHz OR 112,7MHz
• FIS REQUENCY 118,475 MHz
• TWR FREQUENCIES LJ 118,0 MHz,
• MB 119,2 MHz, PZ 124,875 MHz
• APP FREQUENCY 135,279 MHz

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ROOM FOR IMPROVEMENT

• NO OFFICIAL METEO FORECAST INFORMATION IS
  AVAILABLE FOR ATCO-S SELF BRIEFING BEFORE
  STARTING THE WORK ON THE SECTOR.
• ATCO-S SOMETIMES AT OWN DISCRETION USE PUBLIC
  SHARED INTERNET PAGE PRIVIDED BY MET OFFICE.

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ROOM FOR IMPROVEMENT

• TWR-S ARE NOT EQUIPPED WITH OFFICIAL
  PERCIPITATION RADAR PICTURE, WHICH COULD HELP
  PREDICT FLOW OF TRAFFIC IN THE NEAR FUTURE AND
  DEVELOPMENT OF THE SIGNIFICANT METEOROLOGICAL
  PHENOMENA AROUND CONTROLLED AREAS

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ROOM FOR IMPROVEMENT

• CURENT RADAR PERCIPITATION PICTURE ON THE ATCO
  AND FIS OPERATOR RADAR SCREEN IS UPDATED EVERY 9
  MINUTES WHICH IS NOT FREQUENT ENOUGH FOR
  PRACTICAL USE DURING VECTORING OF THE AIRCRAFT ON
  THE FINAL APPROACH OR TRANSMITTING INFORMATION TO
  VFR AIRCRAFT WHEN TUNDERSTORMS ARE IN THE
  TERMINAL AREA
• POSSIBLE SOLUTION TO IMPLEMENT ON THE ATCO-S
  RADAR SCREEN AND FIS OPERATOR ADVISORY SCREEN
  LIVE UPDATES OF THE WEATHER DEVELOPMENTS IN THE
  AREA

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ROOM FOR IMPROVEMENT

• UPPER WIND TABLES ARE FOR ATCO AND FIS OPERATOR
  AVAILABLE ONLY ON THE SEPARATE SCREEN BETWEEN
  OTHER INFORMATION. NO WIND INFORMATION INDICATION
  IS AVAILABLE ON THE RADAR SCREEN OF THE ATCO
• POSSIBLE SOLUTION TO IMPLEMENT ON THE ATCO-S
  RDR SCREEN AND FIS OPERATOR ADVISORY SCREEN
  OPTIONAL VERTICAL WIND INFORMATION TABLE FOR
  EACH LEVEL.