I wonder if the CAD/HKIA are aware of this practice and of the apparent conflict with the HKIA AOM?
For goodness sake, CX has been operating that way for at least the last 25 years and the procedure is defined in the company’s Operations Manual, which is
approved by the HKCAD. HKCAD FOIs regularly fly with the company and it is regularly ramp inspected. Your seemingly innocent question now sounds like a witch hunt.