Taiwanese authorities have released a factual data report on the crash of Singapore Airlines flight SQ006.

Investigators say airport officials did not properly mark a closed runway that the Singapore Airlines jumbo jet tried to use when it slammed into construction debris and burst into flames in Taiwan, killing 83 people.

In his preliminary report, Taiwan's chief crash investigator Dr Yong Kay said one runway light was broken and another wasn't bright enough, when the Los Angeles-bound Singapore Airlines Flight SQ006 tried to take off on the wrong runway during a fierce rainstorm caused by an approaching typhoon.

Dr Yong also said that the runway which closed for construction, should have had big cross marked on the runway, warning planes not to use it.

The crash investigator said a final report would be released as soon as December.

He said that officials were still gathering facts and were not ready to formally announce what caused the crash.