These folks at the Flight Standards & Airworthiness
Division may be able to help:
The Government of the HKSAR
Flight Standards & Airworthiness
Division, Civil Aviation Department
10/F Commercial Building
Airport Freight Forwarding Centre
2 Chun Wan Road
Chek Lap Kok
Lantau
Hong Kong
Tel: (852) 2769 7641
Fax: (852) 2362 4250
http://www.info.gov.hk/cad/english/publications.htm