When was Kai Tak permanently closed to cargo service?
The cargo terminal was closed for good by 24th August, 1998.

First Anniversary of Hong Kong SAR: Infrastructure Development


  Air cargo handling was more seriously affected by problems with the automated handling system at the new 'Super Terminal 1' operated by Hong Kong Air Cargo Terminals Ltd (HACTL). This forced HACTL to re-open its air cargo facility at Kai Tak until the new terminal at Chek Lap Kok - one of the world's biggest - was running smoothly. By August 24, all incoming and outgoing air cargo was being handled at HACTL's new Super Terminal 1.