VINGA demonstrates first RNP-AR arrival with ILS approach

The VINGA (Validation and Implementation of Next Generation Airspace) green flight trials were launched on 24 May with a one-hour demonstration flight, reports Aimee Turner from Göteborg airport.
VINGA – a project within the SESAR European research programme to advance air traffic innovation – brings together LFV, Göteborg Landvetter Airport, Airbus PBN consultancy Quovadis, and Swedish airline Novair.
Its aim is to show the potential in reduced CO2 emissions and noise from the en-route phase of the arriving flight into the airport, through the approach, landing, and surface phase until parking at the gate.
The validation effort continues through the surface and climb-phase of the departing flight until the en-route phase, when leaving Swedish FIR. “It will contain all components included in the “traditional” gate-to-gate concept, only in a slightly different order,” said LFV’s Niclas Wiklander.
“The overall objectives will still be the same and by using the same site for the validation of both the departure and arrival phase there are efficiency gains to be achieved.”
Around 100 validation flights are planned, which is vital for the success of implementation of performance based navigation operations in the day-to-day operation. “This is especially true in a short time perspective when we will have aircraft with different navigation capabilities,” said Wiklander.
Flight procedures to be used during the validation flights will be optimised RNP AR (Required Navigation Performance Authorization Required) approaches for both runway ends at Göteborg.
“The purpose of the VINGA project is to optimize the trajectory from the en-route phase until landing to gain best energy efficiency possible (i.e. flight path shortening), but also to minimize aircraft noise over communities in the latter part of the arriving validation flights,” said Wiklander
This will be achieved by using the ICAO Required Navigation Performance Authorization Required (RNP AR) Procedure Design Manual (Document 9905) for the development of such instrument approach procedures.
The VINGA project will feature a European first too, a transition from a RNP arrival to an ILS approach, with a RF (Radius Fix) final turn and a 0.3 RNP value. The use of RF-legs in terminal area and RNP value down to 0.3 is suggested by ICAO in the new proposed nomenclature of Advanced RNP.
Paul-Franck Bijou, CEO of Quovadis, said: “By linking an ILS approach to an RNP arrival, low minima conditions ie 200ft and below, will no longer be the “show stopper” for flexible arrivals.”
“This combination also ensures that noise and fuel burn reductions through less track-miles can be systematically achieved in all weather conditions.”
Wiklander added: “RNP transition to ILS combines the advantages of both worlds. RNP operation underlines PBN advantages through flexible and repeatable trajectories reducing noise impacts and mileage and ILS conventional precision approach offers attractive weather minimum.”
One RNP transition to ILS transition will be used for runway 21 as an overlay of an existing P-RNAV STAR followed by an ILS. The transition between the two operations will be fixed and repeatable.
VINGA builds on the experience of last year’s AIRE ‘MINT’ flight trials with Novair where the combined benefits of RNP and CDO were demonstrated at Stockholm.