Naar aanleiding van het voornemen een windmolenpark te plaatsen in de nabijheid van een platform op de Noordzee is het NLR verzocht een Flight Operational Safety Assessment (FOSA) uit te voeren voor de Airborne Radar Approach (ARA) naar en het vertrek van dit platform. De werkzaamheden zijn uitgevoerd met als leidraad EASA document AMC 20-26 en FOSA guidance material van Eurocontrol.
NLR-ATSI performed a safety review of the aircraft turnaround processes and safety management system in order to identify quick wins and opportunities for safety improvements in the long term. Interviews and observations were performed at Viggo Eindhoven B.V. in order to benchmark Viggo’s safety management system against (best) industry practice.
Teuge airport wants to develop and allow instrument flights to RWY 09/27. In order to accomplish this, it was decided that a set of Instrument Approach Procedures (IAP) utilizing Performance Based Navigation (PBN) will be published for RWY 27. At the same time, it is necessary to evaluate the feasibility of the visual procedure to RWY 09.
NLR designed concepts of Instrument Flight Procedures and two approaches with vertical guidance (APV). All designs are done in accordance with the ICAO documents such as ICAO PANSOPS and the PBN Manual. Also set of Obstacle Limitation Surfaces, as defined by ICAO Annex 14 is built for RWY 09/27 and assessed regarding the obstacles interference.
NLR-ATSI supports ArkeFly in the development of a Fatigue Risk Management System for their flight crew. This system will allow ArkeFly to control flight crew fatigue in planning and operation in a safer manner than by using the prescriptive flight and duty time limitations.
EASA has asked NLR-ATSI to develop a safety case for the amendment of the wake turbulence separation requirements to be set behind the Airbus A380. The amendment as proposed by Airbus is founded on recent flight test measurements of the impact of the wake turbulence on a follower aircraft.
NLR-ATSI provided consultancy to the Rheinland-Pfalz Ministerium für Wirtschaft, Verkehr, Landwirtschaft und Weinbau regarding changes to departure procedures from runways at Frankfurt/Main airport as proposed by Deutsche Flugsicherung (DFS). Question was whether the proposed changes were the most optimal solution regarding the noise burden for the populated areas in and around Mainz. Several alternative designs of departure procedures were proposed. These alternatives enabled lowering the noise emissions at the main populated areas in Rheinland-Pfalz.
On behalf of the SESAR Joint Undertaking, EUROCONTROL rewarded the "Mathematical Approach towards Resilience Engineering in ATM" (MAREA) project of NLR-ATSI, VU University Amsterdam and University of l'Aquila. Resilience Engineering in ATM supports the development of ATM designs that can resist a wide variety of demands, variations, degradations and disruptions.
On request of the Dutch Expert Group Aviation Safety (DEGAS), a quick analysis of the influence of the operations on hospital roof helipads and light conditions on the risk of Helicopter Emergency Medical Service (HEMS) operations was conducted.
The Fonds d’Urbanisation et d’Amenagement du Plateau de Kirchberg is planning to develop a number of high-rises at the Kirchberg Plateau, near Luxembourg airport. The location and height of two of these high-rises are such that they protrude through the Obstacle Limitation Surfaces that are intended to safeguard a defined volume of airspace around the airport. According to ICAO regulations such protrusions are only allowed when it is shown by means of an aeronautical study that the safety or regularity of operations of aircraft are not significantly affected. NLR-ATSI has conducted the required aeronautical study.
The Dutch power company TenneT plans to build a new 380 kV high-voltage transmission line. A section of the envisaged line of pylons runs alongside Schiphol’s Polder runway, following the route of an existing 150kV transmission line. NLR-ATSI analysed the potential risks to flight safety.
In view of the foreseen activation of the Instrument Landing System (ILS) at Lelystad Airport, NLR-ATSI has designed Instrument Approach Procedures for both conventional and RNAV approaches and has analysed the associated safety aspects.
In view of the considered automation of meteo services at Rotterdam Airport, NLR-ATSI conducted a safety assessment of the related safety effects.
Performance Based Navigation (PBN) is going to be implemented in the Netherlands following an ICAO resolution. Therefore, a task force was established which provided a vision and Roadmap up to 2020 for PBN operations in the Netherlands. NLR-ATSI conducted a scan on the safety aspects of the Roadmap through a self-assessment using the Safety Scanning Tool (SST).
The safety of General Aviation in the United States has been an existing concern which the FAA is trying to improve. NLR-ATSI supported the FAA by an analysis of incident data to identify important factors influencing the safety of general aviation.
Noise hindrance may result from aircraft deviating from the assumed nominal departure route. In order to improve flight path accuracy during turns, it is proposed to design Schiphol departures with so-called Radius to a Fix segments (or “RF legs”) for noise abatement purposes only. Commissioned by Knowlegde Development Centre of Mainport Schiphol, NLR-ATSI executed a safety assessment of the situation with departures including RF legs, including the formulation of safety objectives, the identification of hazards, an analysis of causes and consequences, and the definition of safety requirements.
The objective of this collaboration between NLR and the Vrije Universiteit Amsterdam, is to enhance safety analysis of organisational processes in air transport. To this end, new approaches for modelling, simulation and analysis of organisational relationships and processes are developed. The 3 year research project is funded by Eurocontrol.
A 4 year project led by NLR under contract with the European Commission, to investigate the safety aspects of self separation by ASAS techniques in higher density traffic situations.
EASA requires insight into and access to high-quality and reliable information on aviation activity and products. NLR-ATSI develops a Data Warehouse for aviation production data to meet this requirement. The Data Warehouse allows estimation of safety performance indicators that can be used for safety analysis. The project for EASA also comprises the maintenance and update of the Data Warehouse during a service period of several years from 2008 onwards.
Landing overruns belong to the most frequently reported accident types in the world. It is therefore crucial to gain a better understanding of the factors that contribute to the risks of landing overrun. FAA has contracted NLR-ATSI to analyze routine landing performances of medium twin-engine jet aircraft (Airbus A320 and Boeing 737) based on on-board recorded (Quick Access Recorder) data for around 50,000 landings.
Obstacle assessment of planned wind turbines near Teuge airport and identification of risk mitigating measures.
Obstacle assessment of wind turbine park near Hato airport. Both obstacle clearance issues were investigated as well as interference of the wind turbines with the surveillance equipment on the airport
Assessment of risks arising from placement of a collapsable sound barrier on the strip of Runway 36L of Amsterdam Airport Schiphol
By concentrating on the interfaces between the different disciplines that contribute to ground handling, this study established the main risk factors at Amsterdam Airport Schiphol. The work was conducted for the expert group on ground handling of the Safety Platform Schiphol (Veiligheidsplatform Schiphol or VpS).
This study aimed to assess whether operations with reduced divergence would be acceptable from a collision risk point of view. Both a quantitative collision risk methodology based on the ICAO CRM model was used, as well as a worst case analysis using 6DoF aircraft simulation models.
For this fast growing operator, a review of the safety management process and organisation, an operational risk assessment and a safety culture assessment were conducted. Furthermore a risk assessment tool for flight operations was developed.
Prior to implementation of Reduced Vertical Separation Minima in the AFI region, collision risk assessments were conducted against two safety policy objectives.
A safety feasibility indication was given of the Functional Airspace Block (FAB) Europe, based on the ATM concept, the inputs from operational, technical and safety experts and the results of the Preliminary Safety Feasibility Study.
The goal of this 5 year programme was the development of a methodology that would allow certification credit for good human factors design practice in certification regulation. The method was developed under contract for the Federal Aviation Authority (FAA) and CAA The Netherlands.
A 4 year research project, funded by the European Commission and led by NLR, aimed at improving the methodologies for conducting fast time collision risk assessments for ATM applications.
In support of the Federal Aviation Administration’s (FAA) Systems Approach for Safety Oversight (SASO) the FAA has initiated research for the development of a causal risk model of commercial air transport. The proposed risk model architecture introduces a hybrid causal model of event sequence diagrams, fault trees and Bayesian Belief Networks.
For FOCA, a second opinion safety classification was given of future development options of the airport of Zurich
Both accident risk as well as third party risk were compared for three alternative approach procedures to Zurich airport.
For the Norwegian ANSP AVINOR, safety assessments were conducted for three uncontrolled airports Hammerfest, Molde and Rorvik, regarding existing services and the foreseen changes. The work was done with partner ACONA.
For the Aircraft Accident and Incident Investigation Bureau (AAIB) of the Latvian Republic, the engine of a crashed Cessna 152 was investigated to establish if this was a possible contributing factor to the accident.
Commissioned by Eurocontrol, NLR-ATSI and Helios Technology Ltd have developed a new interactive safety screening tool that aims to improve safety aspects in the early stages of air traffic management systems design, by identifying the changes that can positively or negatively affect safety, as well as their level of comparative importance.
The Novartis conglomerate plans to build a cluster of eight high-rise buildings near the airport of Basel-Mulhouse. The height of the planned high-rise zone is such that the relevant Obstacle Limitation Surface will be protruded. An aeronautical study has been performed to show that this protrusion would not affect the safety and regularity of the operations at the airport.
A study was performed into the possible re-design of Reykjavik airport. The study included safety (including obstacle assessment), noise, usability and land use aspects.
NLR was contracted by Lugano airport to evaluate the risks of a new approach procedure and to propose mitigating measures and alternative solutions.
For Eurocontrol’s Performance Review Unit, a framework of indicators for the potential influence of Air Navigation Services on air traffic safety in Europe was developed.
Under contract for the Swiss Department of Environment, Traffic, Energy & Communication (DETEC), an audit was performed to investigate the status of the implementation of the original recommendations.
The study was aimed at establishing the effects that obstacles near the runway can have on the windclimate (turbulence). Based on extensive simulations (both offline and with moving base simulators), advise has been issued to the Dutch Ministry of Transport regarding the acceptable height of buildings near the runway.
Under contract with Eurocontrol, a model was developed that can be used to assess an airport’s vulnerability to runway incursions. The model was validated against data from a number of major European Airports.
A study was performed of the proposed PRNAV/visual approach for Zürich Airport to show the effects of a reduced protected airspace on the collision risk.
A study of safety and compatibility was performed to show regulatory compliance of the current mixed VFR/IFR operations at Geneva airport. Also addressed was the effect of traffic growth on the future safety and compatibility of the mixed VFR/IFR traffic stream.
A study was performed for AVINOR into the safety effects of proposed changes in manning, equipment and responsibilities for the tower and approach operations at Tromsø airport. The study was conducted with partner ACONA.
A study was performed for AVINOR into the safety effects of proposed changes in manning, equipment and responsibilities for the tower and approach operations at Kjevik and Vigra airports. The study was conducted with partner ACONA.
Zurich airport faces a unique set of boundary conditions when developing operational procedures. This study proposed ways to reduce the capacity effects of the interaction between runways 14 and 16 on Zurich airport and at the same time find ways to reduce noise impact.
This study concerned the establishment of possible criteria for granting exemptions to buildings violating Obstacle Limitation Surfaces in light of increasing obstacle density at Schiphol.
For the Federal Aviation Authority (FAA), a model was developed that represented the causal factors of an engine failure and the causal pathway between these factors. The model was constructed as a Bayesian Belief Net and was quantified using historic accident data.
This study was conducted for Unique (the operator of Zürich airport) to devise new flight procedures to improve capacity without increasing the noise burden. Special attention was given for safety conflicts between take-off RWY 16 and go-around RWY 14.