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 News Archive  2016 

Neuigkeiten/Termine

> December 2016: Completion of tailored safety assessment procedures at Dusseldorf airport
> November 29th 2016: GfL presents results of flight safety assessment for Freiburg airport
> November 2016: Safety assessment for island Foehr
> October 7th 2016: Presentation of tailored safety assessments for regulatory deviations found in national specifications according to NfL and new European standards according to EASA
> July 2016: DFS extends ETAS Software Order - Permanent monitoring of flight efficiency now also including piston aircraft types and all emission types from aircraft engines for the five largest German Airlines
> July 2016: Airport Cologne/Bonn GmbH assigns investigation concerning operational risks of runway strips with insufficient bearing strength within the scope of veer off accidents
> April 2016: GfL received order concerning safety assessments of deviations between national specifications according to NfL an European guidelines pursuant to EASA CS-ADR-DSN
> April 2016: Fraport assigns investigation concerning operational risks of subsurface constructions in the runway strip within the scope of veer off accidents
> April 2016: DFS ordered ETAS Software - Permanent monitoring of flight efficiency (fuel consumption, emissions) for the five largest German Airlines from autumn 2016
> March 2016: EASA certification of aerodromes: GfL publishes risk assessment methodology concerning runway strips with insufficient bearing strength
> February 22nd, 2016: GfL completes impact analysis of new, intended departure and approach procedures for Zurich airport within the „Operating Scheme 2014 (BR2014)“ - Presentation of the results in Waldshut
> February 2016: Nürnberg Airport assigned GfL to analyse the compatibility of the nearby forest “Reichswald“ with the safety of flight operations within an aeronautical study
> January 2016: The city of Freiburg im Breisgau orders the examination of possible damages to third parties through the construction of the new SC stadium



December 2016: Completion of tailored safety assessment procedures at Dusseldorf airport

On behalf of Dusseldorf Airport Company GfL drew up guidelines for conducting safety assessments. In future these guidelines will be applied by users of different departments in a standardized manner, especially when structural/technical modifications (e.g., new construction of elements on airside as taxiways) or changes in operational procedures (e.g., modification of operating agreements) are made. Therefore airport-specific constraints (infrastructure, operating procedures etc.) on the one hand as well as general elements of safety assessments (hazard analysis, risk assessment/evaluation and derivation of measures) on the other hand were considered. These theoretical basics are transferred into practical application by carrying out a workshop at Dusseldorf airport scheduled for February 2017. According to this, GfL focusses increasingly on the development of procedural requirements concerning safety assessments, such as tailored safety assessments for airports being members of ADV with regard to regulatory deviations found in national specifications according to NfL and new European standards according to EASA.

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November 29th 2016: GfL presents results of flight safety assessment for Freiburg airport

By the end of November GfL and Wacker Ingenieure – Wind Engineering (measuring of wind field data in boundary layer wind tunnel) presented the assessment’s results at Technical City Hall in Freiburg. The study focusses on the compatibility of safe flight operations with the construction of the future soccer stadium (SC Freiburg) and analyses impacts on third parties. Within the scope of the meeting, methodology and results were explained and discussed with the airport’s users in detail.

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November 2016: Safety assessment for island Foehr

The island Foehr belongs to the North Frisian Islands and to the district of North Frisia in federal state Schleswig-Holstein. Foehr is the largest and the most populated German island without a link to the mainland. In this context GfL has been awarded to determine external risks induced by flight operations and their impacts on people on the island. The assessment is focused on the operation of a go-kart track close to the Wyk airport located on the island’s southeastern part.

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October 7th 2016: Presentation of tailored safety assessments for regulatory deviations found in national specifications according to NfL and new European standards according to EASA

On behalf of German Airports Association (ADV) GfL is currently conducting assessments of the operational safety concerning specific deviations between national specifications according to NfL an European guidelines pursuant to EASA CS-ADR-DSN (see news entry April 2016). The safety assessment’s outcomes were presented on 7th October 2016 to the Federal Ministry of Transport and Digital Infrastructure (BMVI) as national regulatory authority in Berlin and were discussed with the state representatives.

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July 2016: DFS extends ETAS Software Order - Permanent monitoring of flight efficiency now also including piston aircraft types and all emission types from aircraft engines for the five largest German Airlines

In April 2016, DFS Deutsche Flugsicherung GmbH ordered our „EJPM based Trajectory Analysis Tool“ (ETAS) to be implemented at DFS headquarters in Langen. As the interim checks of the implementation processes run out very positive, DFS now decided to extend the tool’s capabilities by ordering the optional “Turbo Prop and emissions module” allowing detailed emission calculations per flight now for all types of aircraft to be used for the "Arbeitsgemeinschaft Optimiertes Fliegen" comprising Lufthansa group, TUIfly, Condor Flugdienst, Air Berlin and Germania for daily analysis and evaluation of all flight tracks. The extended version will be delivered to DFS in January 2017.

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July 2016: Airport Cologne/Bonn GmbH assigns investigation concerning operational risks of runway strips with insufficient bearing strength within the scope of veer off accidents

EASA’s directive CS-ADR-DSN provides specific requirements concerning the bearing strength of runway strips (CBR value of 15 – 20) in order to minimize the hazard of an aircraft running off the runway during veer off incidents/accidents. Within the scope of the EASA certification at Cologne Bonn Airport (CGN) GfL was assigned by Airport Cologne Bonn GmbH (FKB) to conduct a safety assessment for the entire runway system consisting of two parallel runways and the transversal one. CGN as such is further applicant of our methodology, which is currently also being used at Frankfurt/Main Airport (see news of April 2016). For this purpose detailed soil properties were recorded by third parties being incorporated into the risk assessment model developed by GfL (see news entry March 2016). Besides that, further investigations will be carried out covering the risk of aircraft collisions with subsurface constructions. Overall objective is to provide evidence that safe aircraft operations can be guaranteed even if there are potential guideline deviations.

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April 2016: GfL received order concerning safety assessments of deviations between national specifications according to NfL an European guidelines pursuant to EASA CS-ADR-DSN

On behalf of German Airports Association (ADV) GfL conducts assessments of operational safety concerning specific deviations between national specifications according to NfL an European guidelines pursuant to EASA CS-ADR-DSN. These safety assessments basically cover aspects of obstacle limitation surfaces as well as aerodrome lighting, markings and signs. Basis for the assessment procedures are the provisions published by Federal Ministry of Transport and Digital Infrastructure in the „Manual for Aviation Administration“. Object is to provide evidence whether the NfL resp. EASA requirement‘s level of safety is equivalent (Equivalent Level of Safety, ELOS) or if the requirements possibly cause increased/decreased levels of safety.

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April 2016: Fraport assigns investigation concerning operational risks of subsurface constructions in the runway strip within the scope of veer off accidents

GfL has already conducted a safety assessment regarding the risks of runway strips with insufficient bearing strength at airport Frankfurt/Main in 2014. Building on that there is a need of further investigations concerning the safety impact of subsurface constructions (e. g. wells, drains, foundations etc.) in the runway strip’s area. Referring to this the safety assessment has to clarify whether subsurface constructions being non-compliant according to EASA CS-ADR-DSN (especially avoiding buried vertical surfaces by chamfering foundations in order to prevent collapse of landing gears during veer off accidents) induce intolerable operational risks. Therefore measurements of local bearing strength (CBR) in the vicinity of subsurface constructions will be carried out in cooperation with third parties.

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April 2016: DFS ordered ETAS Software - Permanent monitoring of flight efficiency (fuel consumption, emissions) for the five largest German Airlines from autumn 2016

An important step for the aviation in Germany is the integration of our „EJPM based Trajectory Analysis Tool“ (ETAS) take place in the headquarters of DFS Deutsche Flugsicherung GmbH. After comprehensive concept and research phase over the last two years DFS in common with the "Arbeitsgemeinschaft Optimiertes Fliegen", the owns the airlines Lufthansa group, TUIfly, Condor Flugdienst, Air Berlin and Germania, has decided to implement our ETAS Software for daily analysis and evaluation of all flight tracks indicate fuel consumption. An additional option for the evaluation of flight emissions (COX, NOX, SOX, carbon black, H2O, UHCH) is included.

Therefore daily precise determination and analysis of flight-specific consumption and the environmental performance of all operations performed by the AG members flights will be possible, as stored in the DFS radar data processing system FANOMOS. This regular performance measurement which is based on innovative calculation method, also developed at the Technical University Dresden, is providing a worldwide substantial contribution to eco-efficient design of air traffic. Additionally a significantly higher quality in determining the most important indicators in accordance whith SES Performance Sheme (EU VO 691/2010) can be affected.

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March 2016: EASA certification of aerodromes: GfL publishes risk assessment methodology concerning runway strips with insufficient bearing strength

The risk assessment methodology for runway strips with insufficient bearing strength was published in the present issue of Ingenieurspiegel. In the context of aerodrome certification pursuant to EASA CS ADR-DSN, runway strips have to provide a minimum bearing strength in order to minimize the hazard of an aircraft running off the runway (veer off). Purpose is preventing collapse of the (nose) landing gear and providing drag to these aircraft to reduce accident location. The methodology assesses risks based on occurrence probabilities of veer off incidents/accidents and potential personal injuries and material damage. Regarding this damages to aircraft are investigated by using a detailed flight-mechanical model based on wheel-soil interaction (generally characterized by wheel sinkage and rolling drag). This methodology ensures an valid calculation and assessment of risks by regarding the airport’s individual infrastructural and operational conditions. If necessary, risk mitigation measures will be developed in order to provide evidence that safe aircraft operations can be guaranteed despite guideline deviations.

Download: > article

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February 22nd, 2016: GfL completes impact analysis of new, intended departure and approach procedures for Zurich airport within the „Operating Scheme 2014 (BR2014)“ - Presentation of the results in Waldshut

On February 22nd, GfL presented the results of their impact analysis of the intended re-design of current departure and approach procedures for Zurich airport within the so-called „BR2014“ and in particular the associated “East Concept”. Among the invited guests were citizens’ initiatives, politicians, Zurich airport representatives and the press: According to our results, the implementation of the “BR2014” concept would lead to an obvious increase in overflights over Southern German territory during times of the intended east concepts being active. The search for alternatives with the least additional strain on Germany has been thoroughly conducted. The greatest challenge here was to identically ensure the ICAO requirements for process planning (ICAO PANS OPS) to be met to guarantee safe flight operations. The results could show that valid alternatives do exist.

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February 2016: Nürnberg Airport assigned GfL to analyse the compatibility of the nearby forest “Reichswald“ with the safety of flight operations within an aeronautical study

The airport of Nürnberg faces the challenge to permanently comply with the international regulations of adequate obstacle clearance by EASA and NfL. Large forest areas of he Reichswald have been existing nearby the airport ever since and were temporarily assigned as special areas of conservation. In consensus with the responsible aviation authority, a forest clearing with minimal ecological interference has been permitted. For this, a sophisticated concept for the ecologically acceptable clearence of obstacles within the airport‘s obstacle management system has been developed. Despite these efforts, penetration of the named areas is likely to remain. GfL has been assigned to evaluate this matter wihin an aeronautical study (see > http://www.gfl-consult.de/files_en/e_services.php?mid=3&sid=13).

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January 2016: The city of Freiburg im Breisgau orders the examination of possible damages to third parties through the construction of the new SC stadium

The installation of additional stations for the city train are part of the extensive designs for the intended construction of the new football stadium in Freiburg which is located in close proximity to the existing airport. In general, these stations are only served during football ganers or other events in the stadium. One of the train stations is supposed to be built behind the south end of the airport. This station would be placed in the direct take-off or approach path (take-offs to the south, landings to the north) of the aircrafts. The questions arises whether the passengers are at a higher risk while waiting before and after football games due to the station‘s exposed position. GfL has been awarded the contract to determine the „external risk“ for the people surrounding the train station. For this purpose, GfL applies the approved external risk model which has already been verified and qualitatively proven (for more information about the method ( > http://www.gfl-consult.de/files_en/e_services.php?mid=3&sid=10). Results should be available in spring of 2016.

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