we are experienced lacle independent trusted fully equipped
specialist lacle We provide specialist engineering consulting services
for airports and air traffic control
specialising in safeguarding airports and CNS systems

we provide specialist engineering services Airport Safeguarding Control Tower Siting & Planning
CNS Systems Siting & Planning Airport & Airspace Design Assessments Aiport Safeguarding Careful planning and technical assessments ensure flight safety is managed during the design and construction of infrastructure at or near airports. Changes to the built environment require a systematic approach to assess their impact to airport operation and this process is called safeguarding.

Lacle is a specialist in safeguarding airports, supporting our clients from design to construction and commissioning by conducting obstacle and CNS assessments for new or modified, permanent or temporary structures at or near airports. Our solutions ensure safe airport operations throughout, while at the same time allowing developers to maximise development values.
we provide Windfarm Assessments < Obstacle Assessments CNS Assessments & Modelling Wind is a major form of renewable energy and wind farms of various scales are appearing in many countries. However, they can create a potential risk to flight safety both by being a physical obstruction, as well as interfering with the operation of some CNS systems. Radars are particularly prone due to the speeds of the rotating turbine blades being similar to the speed of aircraft in flight.

Lacle supports wind farm developers and airspace users during the siting and design of new wind farms by conducting comprehensive aeronautical studies to confirm compliance with international guidelines, to identify risks to flight and CNS operations, and to recommend any necessary mitigation measures.
ICAO Annex 14 Obstacle Limitation Surfaces
ICAO EUR DOC 015 Building Restricted Areas
ICAO PANS-OPS Obstacle Clearance Requirements
Computational Modelling of CNS Signals
Hazard Identification and Assessment
Stakeholder Engagement
Our Areas of Expertise Windfarm Assessments < < Structures at or near airports must comply with obstacle limitations prescribed by ICAO and the relevant national regulator when they are built or modified, to ensure flight safety is not compromised by any change in the built environment.

Lacle supports airport operators and property developers during the design, construction and commissioning stages by conducting obstacle assessments and analyses of any new or modified, permanent or temporary structures.
Obstacle Assessments ICAO Annex 14 Obstacle Limitation Surfaces
ICAO EUR DOC 015 Building Restricted Areas
ICAO PANS-OPS Obstacle Clearance Requirements
3D Visualisation
Computational Modelling of CNS Signals
Stakeholder Engagement
Our Areas of Expertise < ATC and flight operations rely on several systems to maintain safety and efficiency. All such CNS equipment function by transmitting and receiving electronic signals which are subject to the impact from the surrounding built environment.
Therefore, safeguarding CNS equipment and their signals is important to ensure they perform properly.

Lacle supports airport operators and property developers during the design, construction and commissioning stages by conducting CNS modelling assessments and analyses for different types of CNS systems against any new or modified, permanent or temporary structures.
CNS Assessments & Modelling ICAO Annex 10 Aeronautical Telecommunications
ICAO EUR DOC 015 Building Restricted Areas
Signal coverage modelling (single/composite coverage)
Signal field strength/reflection/integrity modelling
GPS satellite coverage analysis
Path profile analysis
Our Areas of Expertise < CNS equipment are located at specific spots on the airfield to allow them to function. Different equipment types have different siting criteria and their signals will react differently to the built environment. Siting and planning CNS systems involves understanding the system requirements and an iterative modelling process to ensure the proposed equipment sites will enable the systems to operate as intended.

Lacle supports airport operators and master planners during the design and commissioning of CNS systems by conducting modelling assessments and analyses for different types of CNS systems against the built environment.
CNS Systems Siting & Planning < Control towers are buildings that not only have functional purposes but also architectural significance for an airport. Planning for control towers is a complex process with many inherent and conflicting constraints due to their location in an airport and their primary functional requirement for good lines-of-sight to the runways, taxiways and aprons for ATC controllers.

Lacle supports airport developers, planners civil engineers and architects in control tower designs by conducting siting, height, sightline, ATC, PANS-OPS and CNS/ATM planning and assessments for both conventional towers and camera masts for remote towers.
Control Tower Siting & Planning < Lacle has supported airport and airspace design studies, utilizing our extensive knowledge and experience in safety, capacity and environment. We are capable of performing a range of assessments to test design options and operational scenarios in order to support decision making.
Airport & Airspace Design Assessments

Contract 3917 Air Traffic Impact Assessment for 3RS Works Contracts
Airport Authority Hong Kong | 2021-2025
Hong Kong International Airport HKIA Contract C17C08 East Coast Support Area Development
Design 2 for AAHK | 2020
Hong Kong International Airport

Cingleot Premium Logistics Centre HKIA Contract 3916 3RS Aircraft Noise and Air Quality Consultancy
Able Engineering | 2020
Hong Kong International Airport Mott MacDonald for AAHK | 2020-2021
Hong Kong International Airport
Contract 3917 Air Traffic Impact Assessment for 3RS Works Contracts
Airport Authority Hong Kong | 2021-2025
Hong Kong International Airport
Lacle is responsible for providing support to all HKIA third runway construction contractors by conducting regular holistic assessments.

These assessments are performed on an on-going basis throughout the construction period to predict the collective impact from all construction equipment on HKIA’s CNS and flight operations. The assessments ensure the safe operation of the existing runways adjacent to the works and the results are used to support temporary permits to be granted to each contractors.
HKIA Contract C17C08 East Coast Support Area Development
Design 2 for AAHK 2020
Hong Kong International Airport
Lacle was contracted to support the master planning of a new development area at HKIA.

Working with the lead architect and town planner, Lacle conducted obstacle analysis and modelling studies to identify constraints within the site due to airport operational needs, allowing development potential to be maximized while ensuring the safe operation of CNS equipment and flights.
Cingleot Premium Logistics Centre Able Engineering | 2020
Hong Kong International Airport
This project is a major investment by the Alibaba Group in Hong Kong as part of its effort to develop a global logistics network. The Cingleot Premium Logistics Centre will be one of the largest and most technically advanced facilities of its kind in the region.

Located at the Hong Kong International Airport, this logistics centre is developed by a joint venture led by Alibaba Group’s CaiNiao Network with China National Aviation Group and YTO Express. HKIA Contract 3916 3RS Aircraft Noise and Air Quality Consultancy
Mott MacDonald for AAHK | 2020-2021
Hong Kong International Airport
Lacle is supporting the main consultant to review existing and develop new ATC procedures that will support HKIA’s aim to minimise its noise footprint around the airport as part of the statutory reporting of the environmental performance of the expanded airport.

Lacle further supports the review with simulation modelling and analysis of the proposed procedures to predict their effects on the noise footprint at various traffic levels.
Contract 3917 Air Traffic Impact Assessment for 3RS Works Contracts
Airport Authority Hong Kong | 2021-2025
Hong Kong International Airport HKIA Contract C17C08 East Coast Support Area Development
Design 2 for AAHK | 2020
Hong Kong International Airport

general enquiries +852 63499749
info@lacle.hk
+852 37068550 Lacle Aviation Consultants
905 Laford Centre, 838 Lai Chi Kok Road, Hong Kong