ENR 1.3  Instrument flight rules

1.   Rules applicable to all IFR flights

1.1   Aircraft equipment
1.1.1  Aircraft shall be equipped with suitable instruments and with navigation equipment appropriate to the route to be flown and in accordance with the applicable air operations legislation.
1.2   Minimum levels
1.2.1  Except when necessary for take-off or landing, or except when specifically authorized by the appropriate authority, an IFR flight shall be flown at a level which is not below the minimum flight altitude established by the appropriate ATS authority, or, where no such minimum flight altitude has been established:
  1. over high terrain or in mountainous areas, at a level which is at least 600 M (2 000 FT) above the highest obstacle located within 8 KM of the estimated position of the aircraft;
  2. elsewhere than as specified in 1.2.1 a), at a level which is at least 300 M (1 000 FT) above the highest obstacle located within 8 KM of the estimated position of the aircraft.

Note: When determining which are the highest obstacles within 8 km of the estimated position of the aircraft, the estimate will take account of the navigational accuracy which can be achieved on the relevant route segment, having regard to the navigational facilities available on the ground and in the aircraft.

1.3   Change from IFR flight to VFR flight
1.3.1  An aircraft electing to change the conduct of its flight from compliance with the instrument flight rules to compliance with the visual flight rules shall, if a flight plan was submitted, notify the appropriate ATS unit specifically that the IFR flight is cancelled and communicate thereto the changes to be made to its current flight plan.
1.3.2  When an aircraft operating under the instrument flight rules is flown in or encounters visual meteorological conditions it shall not cancel its IFR flight unless it is anticipated, and intended, that the flight will be continued for a reasonable period of time in uninterrupted visual meteorological conditions.
1.3.3  Change from IFR flight to VFR flight shall only be acceptable when a message initiated by the pilot-in-command containing the specific expression ‘CANCELLING MY IFR FLIGHT’, together with the changes, if any, to be made to the current flight plan, is received by an ATS unit. No invitation to change from IFR flight to VFR flight shall be made by ATS either directly or by inference.
1.3.4  No reply, other than the acknowledgment ‘IFR FLIGHT CANCELLED AT ... (time)’, should normally be made by an ATS unit.

2.   Rules applicable to IFR flights within controlled airspace

2.1   General
2.1.1  IFR flights shall comply with the provisions of ICAO Annex 2, 3.6 when operated in controlled airspace.
2.1.2  As specified in the ICAO Regional Supplementary Procedures (DOC 7030/5-EUR), flights shall be conducted in accordance with Instrument Flight Rules when operated within or above the EUR RVSM airspace. Therefore, flights operating as General Air Traffic (GAT) within the Tirana FIR at or above FL 290, as described in ENR 2.1, shall be conducted in accordance with the Instrument Flight Rules.
2.2   Cruising levels
2.2.1  An IFR flight operating in level cruising flight in controlled airspace shall be flown at a cruising level selected from the table of cruising level at ENR 1.7.5.

3.   Rules applicable to IFR flights outside controlled airspace

3.1   Cruising levels
3.1.1  An IFR flight operating in level cruising flight outside of controlled airspace shall be flown at a cruising level appropriate to its track as specified in the table of cruising levels at ENR 1.7.5, except when otherwise specified by the appropriate ATS authority for flight at or below 900 M (3 000 FT) above mean sea level.
3.2   Communications
3.2.1  An IFR flight operating outside controlled airspace but within or into areas, or along routes, designated by the appropriate ATS authority in accordance with ICAO Annex 2, 3.3.1.2 (c) or (d) shall maintain an air-ground voice communication watch on the appropriate communication channel and establish two-way communication, as necessary, with the air traffic services unit providing flight information service.
3.3   Position reports
3.3.1  An IFR flight operating outside controlled airspace and required by the appropriate ATS authority to:
  • submit a flight plan,
  • maintain an air-ground voice communication watch on the appropriate communication channel and establish two-way communication, as necessary, with the air traffic services unit providing flight information service,

shall report position as specified in ICAO Annex 2, 3.6.3 for controlled flights.

4.   Free Route Airspace General Procedures

4.1   Area and time of application
4.1.1  Free Route Airspace (FRALB) is available within the Tirana FIR from FL195 to FL660.
4.1.2  FRALB encompasses the lateral limits of Tirana FIR as published in ENR 2.1.
4.1.3  FRALB is available H24.
4.2   Definitions

Free Route Airspace (FRA). A specified airspace within which users may freely plan a route between a defined entry point and a defined exit point, with the possibility to route via intermediate (published or unpublished) waypoints, without reference to the ATS route network, subject to airspace availability. Within this airspace, flights remain subject to air traffic control.

FRA Horizontal Entry Point (E). A published significant point on the horizontal boundary of the Free Route Airspace from which FRA operations are allowed. The FRA relevance of such points shall be included in ENR 4.4, column Remarks, as (E). If this point has specific conditions of utilization, this shall be described in the RAD.

FRA Horizontal Exit Point (X). A published significant point on the horizontal boundary of the Free Route Airspace to which FRA operations are allowed. The FRA relevance of such points shall be included in ENR 4.4, column Remarks, as (X). If this point has specific conditions of utilization, this shall be described in the RAD.

FRA Arrival Connecting Point (A). A published significant point to which FRA operations are allowed for arriving traffic to specific aerodromes. The FRA relevance of such points shall be included in ENR 4.4, column Remarks, as (A). Indications on their use for arrivals to specific aerodromes shall be notified via the RAD.

FRA Departure Connecting Point (D). A published significant point from which FRA operations are allowed for departing traffic from specific aerodromes. The FRA relevance of such points shall be included in ENR 4.4, column Remarks, as (D). Indications on their use for departures from specific aerodromes shall be notified via the RAD.

FRA Intermediate Point (I). A published significant point or unpublished point, defined by geographical coordinates or by bearing and distance via which FRA operations are allowed. If published, the FRA relevance of such points shall be included in ENR 4.1 and ENR 4.4, column Remarks, as (I). If this point has specific conditions of utilization, this shall be described in the RAD.

DCT or Direct. DCT or Direct should be used only for flight planning purposes when submitting FPL, and when executing specified type of approach.

4.3   Eligible flights
4.3.1  Eligible flights are those overflights that enter and exit FRALB between FL195 and FL660.
4.3.2  Overflights entering Tirana FIR below FL195 with a planned flight level change into FRALB are eligible to enter FRALB via FRA Intermediate Point where the flight level change occurs.
4.3.3  Additional eligible flights are those that depart or arrive from/to aerodromes within the Tirana FIR or in its proximity and have a planned trajectory above FL195 during some parts of the flight in FRALB.
4.3.4  All flights that are not eligible to enter FRALB shall use fixed route network system.
4.3.5  FRALB is not applied within Tirana TMA and Tirana CTR.
4.4   Route Availability Document (RAD)
4.4.1  All FRALB constrains, exceptions and restrictions, if any, will be published via the RAD.
4.4.2  For RAD, see EUROCONTROL Network Manager Directorate website at: http://www.nm.eurocontrol.int/RAD/index.html