The company provides government and commercial facilities designated as Tenant Restricted Areas (TRA) at HKIA with various aviation security related services in order to assist the effective implementation and maintenance of TRA Security Programmes.
 
Routinely provided services for tenants at HKIA include:
Access control to Airport Restricted Area & Tenant Restricted Area
Security screening of cargo at Cargo Terminal Operators' facilities by use of X-ray and explosives trace detection technology
X-ray screening of air mail and express cargo
Aviation security controls at off-site, designated aircrew and baggage screening channels
 
TRA clients at HKIA using AVSECO's professional services include:
Asia Airfreight Terminal
Air Mail Centre
Hong Kong Business Aviation Centre
DHL Aviation (HK) Ltd.
Ground Support Engineering Ltd.
Hong Kong Aircraft Engineering Co. Ltd.
TNT International Express
Aviation Fuel Supply Company
Air Traffic Control Tower
Cathay Pacific Airways Ltd.
Government Flying Service
Hong Kong Air Cargo Terminals Ltd.
Hong Kong Dragon Airlines Ltd.
United Parcel Services