1.1   Aircraft equipment

Commercial air transport aircraft operating in the airspace of Hungary have to adhere to the provisions of ICAO Annex 6 - Operation of Aircraft - Part 1, Chapter 6 - Aeroplane Instruments, Equipment and Flight Documents - and Chapter 7 - Aeroplane Communication and Navigation Equipment.

Aircraft, other than State aircraft, operating within the Budapest FIR under IFR above 9 500 FT ALT shall be equipped with, as a minimum, RNAV equipment meeting RNAV 5 in accordance with the requirements set out in of ICAO Doc 7030/5 Regional Supplementary Procedures (EUR).

Acceptable means of compliance are set out in the JAA Technical Guidance Leaflet No. 2 rev. 1.

1.2   B-RNAV Contingency Procedures

For B-RNAV equipped aircraft experiencing temporary failure or degradation of the RNAV system below RNP 5, the following procedures apply:

1. Correct operation of the aircraft RNAV system below RNP 5, the following procedures apply:
2. • the routing is in accordance with the clearance; and
   • the aircraft navigation accuracy meets RNP 5
3. If as a result of a failure or degradation of the RNAV system below RNAV5 an aircraft is unable either to enter the airspace designated in ICAO DOC 7030/5, EUR Regional Supplementary Procedures, or continue operations in accordance with the current ATC clearance, a revised clearance shall, whenever possible, be obtained by the pilot.
4. Subsequent ATC action in respect of that aircraft will be dependent upon the nature of the reported failure and the overall traffic situation. Continued operation in accordance with the current ATC clearance may be possible in many situations. When this cannot be achieved, a revised clearance may be required to revert to VOR/DME navigation. ATC may also provide the aircraft with radar vectors until the aircraft is capable of resuming its own navigation.
5. In case of a failure or degradation of the RNAV system below RNAV 5, which is detected before departure from an aerodrome, and where it is not practicable to effect a repair, the aircraft concerned should be permitted to proceed, as directly as possible, to the nearest suitable aerodrome where the repair can be made. When granting clearance to such aircraft, ATC should take into consideration the existing or anticipated traffic situation and may have to modify the time of departure, flight level or route of the intended flight. Subsequent adjustments may become necessary during the course of flight. Operators of such aircraft, where a failure or degradation is detected before departure, shall not insert designators „S” ore” in Item 10 of the flight plan. Since such flights require special handling by ATC, Item 18 of the flight plan shall contain STS/RNAV INOP.
6. For such aircraft experiencing a failure or degradation of the RNAV system below RNAV 5, the following ATC procedures are applicable:
7. • In case of automated messages not containing the information provided in Item 18 of the flight plan, the sending ATC unit shall inform the receiving ATC unit by supplementing the ATC message verbally with the phrase ”RNAV UNSERVICEABLE” after the call sign of the aircraft concerned.
   • When a verbal co-ordination process is being used, the sending ATC unit shall include the phrase ”RNAV UNSERVICABLE” at the end of the message.
   • The phrase ”UNABLE RNAV DUE EQUIPMENT” shall be included by the pilot immediately following the aircraft call sign, whenever initial contact on the ATC frequency is established.

1.3   Minimum flight altitudes

The MOCAs are depicted on chart ENR 6-LHCC-ERC have been determined so as to ensure at least 1 000 FT vertical clearance above the highest obstacle.

Except when necessary for take-off or landing an IFR flight shall not be flown lower than:

1. • over high terrain or in mountainous areas at a level which is at least 2 000 FT (600 M) above
   • elsewhere (over a flat terrain) at a level which is at least 1 000 FT (300 M)

1.4   Change from IFR flight to VFR flight

An aircraft electing to change the conduct of its flight from compliance with IFR to compliance with VFR shall notify the appropriate ATS unit that the IFR flight plan is cancelled.

1.5   RVSM operation

As specified in the ICAO EUR Regional Supplementary Procedures (Doc 7030/4 - EUR), Chapter 1, paragraph 1.1.1.2, flights shall be conducted in accordance with IFR when operated within or above the EUR RVSM airspace.

Therefore, flights operating as GAT within the Budapest FIR at or above FL 290, as described in ENR 2.1, shall be conducted in accordance with the IFR.

3.1   Cruising levels

Flight departing from non-controlled aerodromes for en route flights may start operations only on possession of a filed flight plan, except when a special airspace portion has been approved for the individual flight.

During the en-route portion of the flight, the cruising levels selected as prescribed in para 2 above, shall be maintained.

Outside controlled airspace and TRA, IFR flights shall not be conducted at an IAS exceeding 250 KTS (460 KM/h).

3.2   Communications

All IFR flights leaving the CTR or TIZ shall maintain a continuous listening watch and establish two-way radio communications on the appropriate radio frequency of the FIC.

Identically VFR flights operating en route above 4 000 FT shall also maintain continuous listening watch on the appropriate radio frequency of the FIC.

3.3   Position reports

Aircraft shall make position reports at designated reporting point (if any) and at other occasions, as instructed by FIC, but at least every 15 minutes.

Irrespective of the applicable rules, the FIC shall be notified:

• if an aircraft is compelled to divert from its flight plan route by more than 5 KM;
• if an estimated time over the FIR boundary is different by + 5 minutes from the one communicated to the FIC earlier;
• if it intends to change from IFR to VFR or vice versa;
• if departing from a non-AFIS aerodrome;
• of an approach to land outside an aerodrome.

4.1   Area of application

4.2   Flight Procedures

4.3   Airspace Reservation - Special Areas

4.4   Flight Planning (Item 15)

4.5   Route Availability Document