If you see an aircraft emitting excessive black or nuisance smoke continuously for more than one minute, report the aircraft to the Civil Aviation Department.

Smoke Emission from Aircraft Complaints Hotlines:

Civil Aviation Department 2867 4203

Civil Aviation Department General Enquiries OR Government Hotline - 1823 (yes, only four numbers;

1 for Cantonese
2 for Mandarin
3 for English

Then: State that you are making a report to the Civil Aviation Department (this is a general HK SAR Government hotline.)

Your report should include:

• Date,
• Time,
• Location (including direction of travel)
• Description of aircraft (including airline, number, type)
• Description of smoke and its effect
• How and from where observed
• By whom
• Any interaction with the subject aircraft etc.

Take photographs or video if possible and follow up with an e-mail, copied to aviation@cleartheair.org.hk