ENR 1.3  Instrument Flight Rules


Free-route procedures are available in Lisboa FIR airspace above FL245.

FRA airspace is comprised by Lisbon FIR excluding the portions of airspace where the air traffic services is provided by Madrid ACC and Seville ACC (see ENR-2.2).

FRA airspace incorporates the portion of airspace in Madrid UIR where air traffic services are provided by Lisboa ACC (see ENR-2.2)

Within FRA airspace users will be able to plan user-preferred trajectories through the use of 5 letters Waypoints Name Code included in the ENR 4.4 of AIP Portugal, and the Radio Navigation Aids (ENR 4.1). Segments between Waypoints will be indicated by means of “DCT” instruction.

Traffic will be subject to General Rules and Procedures (AIP Portugal ENR 1.1), RAD orientation scheme and Internal Letters of Agreements (LoA’s) between neighboring ACC’s.

Within the FRA area there will be no limitations on the use of “DCT “.

Overflight traffic should plan directly from FRA airspace entry point to FRA airspace exit point.

Arriving traffic should plan directly from FRA airspace entry point to the STAR initial waypoint.

Departing traffic should plan directly from SID final waypoint to the FRA airspace exit point.

Flight planning within the FRA area will accomplish with adjacent ATS Route network orientation.

For Southbound traffic via NELSO connecting to UN741, ODD and EVEN levels are available 50NM prior arriving NELSO waypoint.

Cross-Border - DCT - NOT allowed. Following IFPS procedures, DCT segment which ends in the FIR but starts in another FIR which is not part of the same National Airspace System is NOT permitted. Airspace users will have to plan their trajectory inside FRA airspace through the use of intermediate waypoints according to the fourth paragraph.

AO’s will plan their trajectory inside FRA disregarding all segregated airspace. In case there is no availability to cross segregated areas, it is expected that the average flight extension to be considered by aircraft operators is approximately 5NM, in exceptional occasions 15NM. However, in most cases radar vectors shall be provided by ATC.

For speed and level changes inside Free Route Airspace in Lisboa FIR,on FPL Item 15, additionally to a waypoint or navaid (see fourth paragraph) and only for this purpose, operators may also use LAT / LONG coordinates.

In case of contingency, a reduced ATS route structure above FL245 will apply as defined in AIP Portugal ENR 2.2.2 - CONTINGENCY PLANNING IN LISBOA ACC (CONFLICT FREE ALLOCATION SCHEME).

In terms of flight planning, Item 15, flight levels (FL’s) within Lisboa FIR Free Route Airspace area will respect the table of cruising levels included in ENR 1.7.5, with the exception of waypoint RIVRO/BARDI. By Letter of Agreement, traffic intending to enter Lisboa FIR via RIVRO/BARDI must enter in ODD Flight Levels and traffic intending exit Lisboa FIR via RIVRO below FL245 (UM191 / B47) or BARDI above FL 245 must exit in even Flight Levels.