Aviation Industry consultants

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• Cyrrus Ltd Head Office:
• Cyrrus House
• Concept Court, Allendale Road, Thirsk
• North Yorkshire, YO7 3NY
• Tel: +44 (0)_ 1845 522585
• Fax: +44 (0) 870 762 2325
• e-mail: info@cyrrus.co.uk
• URL: www.cyrrus.co.uk

Mauritius ILS Passes Flight Check and Enters Service

November 2009

Cyrrus Ltd was engaged to undertake the technical design of the ILS localiser system for Sir Seewoosagur Ramgoolam (SSR) International Airport in Mauritius.  The detailed design had to be conducted to overcome the challenging local topographical conditions, whilst meeting full ICAO Runway End Safety Area requirements.   This project required the application of extensive technical experience, innovative design skills, allied to a very detailed knowledge of the applicable international installation criteria in order to meet the disparate requirements of ICAO Annexes 10 and 14.  Following a successful flight inspection, the new installation entered operational service on 21 Nov 09.

New Instrument Approach Procedure Approved for Kerry Airport

October 2009

Kerry Airport Management approached Cyrrus Ltd with a request to investigate the potential for introducing a NDB/DME instrument approach procedure to runway 08 for Category ‘C’ aircraft (B737-type).  This option had never previously been promulgated due to concerns over terrain and potential turbulence issues to the south and west of the airport.  However, Cyrrus - in cooperation with its Partnership company ASAP sro – conducted a thoroughgoing study of possible profiles and has produced a procedure that achieves or exceeds all relevant safety criteria but which is simple to interpret in the cockpit and interfaces with the existing Category A & B procedures.  The new procedure will be available from 19 Nov 2009.

Radar Approach Control Services at Liverpool and Doncaster Airports

September 2009

Following the installation of Raytheon ASR-10 radars at Liverpool John Lennon Airport (LJLA) and Robin Hood Airport Doncaster Sheffield (RHADS), Cyrrus was engaged to assist with finalising the radar system elements for the equipment.  This project delivered fully plot-extracted radar data to the LJLA/RHADS combined Approach Control facility located at LJLA.  For RHADS, the ‘ownership’ of a radar is a new experience, having relied on data from RAF Waddington until now, whilst at LJLA the new Raytheon product replaced that unit’s S511 radar. The transition into operational service of the new LJLA and RHADS radars took place on 9 Sep and 22 Sep respectively.  This mile stone marks the end of the project detailed in our Case Study: Multiplexers Transmit Critical Radar Traffic Between Liverpool’s John Lennon Airport and Robin Hood Doncaster Sheffield Airport.

Norwich Airport Airspace Change Proposal

October 2009

Cyrrus Ltd has completed the Sponsor Consultation phase of the Norwich Airspace Change Proposal (ACP) process and issued an interim report.  The responses from the consultation are currently being analysed with a view to submitting a formal request to the CAA in the near future.

Cyrrus Ltd Undergoes Quality Audit by Avinor

September 2009

Cyrrus has undergone a Quality Audit by Avinor, the Norwegian Air Navigation Service Provider.  Norway has unique topographical conditions that influence the provision of Instrument Approach Procedures (IAPs) at many airports, some of which are in very remote locations and surrounded by terrain that can only be described as less-than-optimal for the provision of conventional designs.   Cyrrus specialises in providing atypical solutions to seemingly unsolvable problems and has successfully completed numerous Special Category-1 (SCAT-1) IAPs to serve the requirements of Avinor over the past 3 years.  Naturally, Avinor wished to confirm that such a safety critical project continues to be subject to an appropriate level of Quality Control and that an effective Quality Management System was in place.  The Audit was successfully completed on 18 Sep 09 and hopefully paves the way for additional IAPs to be developed under this ongoing project.

Athens International Airport Radar Data Distribution System Upgrade Project

May 2009

Cyrrus Limited has completed the upgrade at Athens International Airport (AIA) of the Airport’s Radar Data Distribution System (RDDS) and the Advance Surface Movement Guidance and Control System (ASMGCS) remote displays.
This upgrade provides;

• Data to a PC based radar display known as ‘Airview’. This is routinely used by the Airside Service Operations Centre (ASOC) operators as a source of ‘real time’ information on aircraft movements, especially inbound traffic.
• The ASMGCS information is used in real time to improve the efficiency of ground operations’ planning.  This facility can be of significant assistance and benefit when normal aircraft movements are disrupted enabling ASOC staff to manage the abnormal situation speedily and efficiently.
• Together the Airview radar and ASMGCS displays provide ASOC staff with real-time information without depending on ATC updates.
• The upgraded system also provides ‘Main’ and ‘Standby’ radar data feed to an Environmental and Noise and Track Monitoring System. This is used by the AIA environmental department to analyse aircraft tracks and conduct investigations into alleged breaches of noise abatement procedures.

To maintain the overall system availability, Cyrrus Limited has undertaken the following tasks as part of the upgrade:

• Modified the system architecture to improve radar data distribution;
• Improved the ASMGCS picture quality in the ASOC;
• Replaced cables within the system;
• Enhanced operator status monitoring;
• Supplied new modules to replace failed ones;
• Supplemented the equipment spares holding;
• Documented the design and maintenance procedures;
• Provided training to AIA engineers.

100th Wind Farm Aviation Assessment Completed

April 2009

Cyrrus Ltd has recently completed its 100th Wind Farm Aviation Assessment.  Cyrrus enjoys a completely impartial reputation in assessing Wind Farm planning applications and produces a quality product that is even-handed in addressing the sometimes conflicting requirements of the Aviation and Renewable Energy industries.

Radar Flight Trial Report on the new Thales ASR at Inverness Airport

January 2009

A great start to a New Year! Cyrrus Ltd completed a Flight Trial Report on the new airport surveillance radar installed at Inverness Airport. The Report was fundamental to the successful completion of this project and enabled the new radar surveillance service to be introduced into operational use from HIAL’s Inverness Airport control tower.

The new radar at Inverness is the THALES STAR2000 PSR with a co-mounted RSM 970S Mode S MSSR.  Cyrrus’ involvement in the overall scope of work included:

• Preparation of the flight trial specification to ensure all of the technical and operational requirements were captured;
• Development of a comprehensive, cost-sensitive set of calibration flight-check profiles;
• Independent check of the radar configuration as part of the pre-calibration flight inspection;
• Recording of radar data collected from the flight test serials using Cyrrus’ own RASS tools procured from Intersoft-Electronics in Belgium.
• Combining the data collected with the calibration aircraft’s GPS data and then analysing the results using the RASS tools.
• Production of a comprehensive assessment report which not only examined compliance to the requirements but also provided an evaluation of the overall performance of the radar.

This project was conducted in cooperation with 2 of our strategic partnership companies Osprey Consulting Services Ltd, who had responsibility for the Safety Cases and Cobham Flight Inspection who provided the Flight Inspection aircraft.