IMPLEMENTATION OF FREE ROUTE AIRSPACE WITHIN LISBON FIR/UIR (FRAL) ABOVE FL245
+.351.21.855 35 06
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Direcção de Segurança e
Aeronautical Information Service
1803-001 Lisboa Codex
Effective date: 12-FEB-2009
Publish date: 01-JAN-2009
The purpose of this Circular is to provide information concerning the implementation of the Free Route Airspace
concept within Lisbon FIR/UIR (FRAL) above FL245.
Using the latest information on airspace availability, supplemented by information on sector capacities, Aircraft
Operators will have greater choice for optimum route selection and will benefit from the expected cost savings.
While the increasing in demand is expected to continue, the international community is urging fuel savings and
emission CO2 reductions.
The FRAL aims to remove the constraints imposed by the fixed route structure and through the optimised use of all
the airspace obtaining benefits of capacity, flexibility, flight efficiency and cost savings, while maintaining safety
Consequently, the FRAL is in line with the measures already approved by the EUROCONTROL Provisional Council
(PC) included in the Dynamic Management of the European Airspace Network Programme (DMEAN) and will respond
to the IATA, CANSO, and EUROCONTROL Flight Efficiency Action Plan expectations.
AREA OF APLICATION
Lisbon FIR/UIR above FL245.
NAV Portugal will implement the FRAL in Lisbon FIR according to the general principles defined on this AIC, which
will be detailed in the AIP.
Date of implementation: MAY 07th, 2009.
Within FRAL airspace users will be able to plan user-preferred trajectories through the used of 5 letters waypoints
name code included in the ENR 4.3 of AIP Portugal, and the radio navigation aids (ENR 4.1). Route portions between
waypoints will be indicated by means of “DCT” instruction.
Traffic will be subject to rules, procedures and Letters of Agreement.
Within the FRAL area there will be no limitations on the use of “DCT”.
Overflight traffic should plan directly from Lisboa FIR/UIR entry point to Lisboa FIR/UIR exit point.
Entry traffic should plan directly from Lisboa FIR/UIR entry point to the STAR initial waypoint. Exceptions, if
required, will be notified in the AIP.
Exit traffic should plan directly from the SID final waypoint to the Lisboa FIR/UIR exit point. Exceptions, if required, will
be notified in the AIP.
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 NAS is NOT permitted. Airspace users will have to plan their trajectory inside
FRAL through the use of intermediate waypoints according to 5.1.
AO’s will plan their trajectory inside FRAL disregarding all segregated airspace. In case there is no availability to cross
segregated areas, it is expected that the average route extension to be considered by aircraft operators is
approximately 5NM, however, in most cases, radar vectors shall be provided by ATC.
In case of contingency, as defined in AIC 010-2008 – CONTINGENCY PLANNING IN LISBON ACC (CONFLICT
FREE FL ALLOCATION SCHEME) – a reduced ATS route structure above FL 245 will apply.
For further information on this AIC and FRAL implementation can be obtained from:
NAV Portugal E.P.E.
Edifício 118 Aeroporto de Lisboa
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