Aeronautical Information Publication

Slovak Republic


LPS SR, š. p.


1.6.1  Primary radar Supplementary services Every radar position is an integral part of some ATC unit (see section AD 2). Providing radar services may be affected by reduced radar coverage, by equipment capabilities, by occurrence of interference or by air traffic controller limitation. If the radar services are provided or not or if their providing is continued, will depend on the decision of the air traffic controller who takes into consideration the named affecting factors. Appropriate call sign of ATC unit used by air traffic controller providing air traffic services, indicates to the pilot-in-command, if radar services can be or cannot be provided.

ATS Unit

Radar Services

cannot be provided

can be provided







Note: When radar services are provided by aerodrome control tower the ATC unit call sign is not changed (e. g. TATRY TOWER). If provision of radar services is not possible the aerodrome control tower will inform pilot immediately after the first radio contact is established. The application of radar control service Radar services are provided, either on the basis of the decision of the radar controller or on request of the pilot-in- command. Establishment of radar identity is realized in accordance with procedures mentioned in ICAO Doc 4444, Part VIII, with exception of the methods mentioned in provision c) and which are not applied. In order to reduce air-ground communication between the pilot and ATC unit in any cases whenever the pilot is informed of the phrase "RADAR CONTACT", he automatically omits position reporting while flying the BRATISLAVA FIR. Horizontal radar separation minimum is 5 NM. In the area of responsibility of Štefánik APP reduced radar separation minimum 3 NM is applied within the range of 40 NM from ARP LZIB.  Levels of flight assigned during the radar vectoring always assure the minimum prescribed vertical clearance corresponding to relevant phases of flight.  The following radar services can be provided in the Control Area Bratislava:
  1. navigational assistance,

  2. radar separation,

  3. radar watch,

  4. radar vectoring. The following radar services can be provided in TMA and CTR of public aerodromes:
  1. navigational assistance,

  2. radar separations,

  3. radar watch,

  4. radar vectoring,

  5. collision hazard information,

  6. information regarding adverse weather.

Note: Information concerning the radar approaches for particular aerodromes are mentioned in the Part 3 - AD. An aircraft vectored by radar for a pilot interpreted final approach shall not be informed by the phrase "Radar service terminated" whenever pilot reports establishing at which time radar vectoring is terminated. Radar and radio failure procedures Radar failure

In the event of failure of radar equipment the air traffic controller proceeds in accordance with ICAO Doc 4444, Part VIII, provision 8.4. Radio failure

In the event of loss of air-ground communication the pilot-in-command of the aircraft controlled by radar is obliged to return to original track as soon as possible and to resume own navigation. Graphic radar portrayal of area of radar coverage

See chart in para. ENR 1.6.3.

1.6.2  Secondary surveillance radar (SSR) Operating Procedures Pilot-in-command duties  A pilot-in-command of aircraft entering BRATISLAVA FIR from an adjacent FIR shall operate the airborne transponder with the Code according to instructions an adjacent control Area until a new Code is assigned (a Code assignment see para. ENR A pilot-in-command of aircraft departing from aerodromes in the Slovak Republic may switch the transponder from position "STANDBY" to position "ON" immediately before take-off. Emergency procedures A pilot-in-command previously instructed to reply in assigned Code, shall in case of emergency continue to operate in this Code until being advised to select another Code. In all other cases an airborne transponder shall be operated on Mode A Code 7700. Pilot-in-command may operate an airborne transponder on Mode A Code 7700, if it is necessary with regard to the stage of emergency. If an aircraft equipped with an airborne transponder is the subject of unlawful interference the airborne transponder shall be operated on Mode A Code 7500. Whenever the airborne transponder fails and cannot be repaired before intended departure, the pilot-in-command shall:
  1. as soon as possible inform an appropriate ATS unit before submitting the flight plan,

  2. plan to proceed to the nearest suitable aerodrome where repair can be made,

  3. insert the letter "N" in item 10 of flight plan if the airborne transponder is completely unserviceable or, in case of a partial failure insert in accordance with ICAO Doc 4444, Appendix 2, a character appropriate to the airborne transponder serviceability. Whenever airborne transponder capabilities fail after take-off the pilot-in-command may expect that appropriate ATS unit shall endeavour to provide for continuation of the flight to aerodrome of first intended landing in accordance with flight plan. Pilot-in-command shall ensure after landing that the airborne transponder will be restored to normal operation. Whenever an airborne transponder cannot be repaired, pilot shall follow the provision of para. ENR Radio communication failure and unlawful interference procedures Radio communication failure procedure

In case of radio communication failure a pilot-in-command of aircraft equipped with an airborne transponder shall operate the transponder on Mode A Code 7600. Unlawful interference procedure

Air traffic services personnel shall be prepared to recognize any indication of the occurence of unlawful interference with an aircraft.

Note: An aircraft equipped with SSR transponder is expected to operate the transponder on Mode A Code 7500 to indicate specifically that it is the subject of unlawful interference. The aircraft may operate the transponder on Mode A Code 7700, to indicate that it is threatened by grave and imminent danger, and requires immediate assistance.  System of SSR Code assignment According to SSR Code Allocation List, a part of ICAO Regional Air Navigation Plan the transit codes from series 14, 17, 26, 34, 42, 43, 44, 45, 46, 47, 51, 54, 61 and 64 are allocated to states in "Participating Area EUR-E (EUR-E)"; the local flights are assigned within BRATISLAVA FIR with local codes mentioned in para. ENR Transit Codes Transit Codes are allocated to a State for a specified ACC for assignment to an aircraft engaged in transit flights within the EUR-E boundaries or, subject to agreement between the states involved and certain conditions, even outside of those boundaries. The individual transit code assigned to an aircraft should be retained for the remainder of the flight in all states in EUR-E an, if possible, other successive "Participating Areas". This code will be transferred to subsequent ATS unit as a part of ACT or EST MSG. Local Codes Local Codes are allocated to a specific Area of Responsibility (AoR) for use by designated ATS units within that AoR or, subject to certain conditions, across AoR boundaries. The individual local code assigned to an aircraft operating inside BRATISLAVA FIR will be retained from take-off to landing. When the aircraft is equipped with the airborne transponder a pilot-in-command shall keep it in operation and respond the Code according to the relevant ATS unit instruction. Setting of the assigned Code shall be verified by radar controller as soon as possible. The following transit Codes and local Codes are assigned in the Slovak Republic:







4401 - 4477




0060 - 0077




3303 - 3307

For DEST within PRAHA FIR.



4050 - 4077




6701 - 6777

For DEST within WIEN FIR as well.



7730 - 7737




7740 - 7775

Used by MIL. Special purpose codes:
  • Code 0000 general purpose code for local use by a State;

  • Code 1000 reserved for use as a conspicuity code for Mode S;

  • Code 2000 shall be used by flight crew in the absence of any ATC instructions unless the conditions for the use of codes 6701, 6702, 6703, 7000, 7500, 7600 and 7700 apply;

  • Code 7000 shall be used by flight crew not receiving ATS service unless the conditions for the use of codes 6701, 6702, 6703 apply and unless otherwise instructed by ATS;

  • Code 7500 see para. ENR;

  • Code 7600 see para. ENR;

  • Code 7700 see para. ENR;

  • Code 6701 reserved for hospital flights unless otherwise instructed by ATS;

  • Code 6702 reserved for SAR flights;

  • Code 6703 - reserved for Police helicopter flights unless otherwise instructed by ATS.

1.6.3  Graphic portrayal of area of radar coverage of SSR - FL 100