I must apologize for the information, that is not correct. Actually, both pilots were Captains, one with 19 years working for TAM (and related airlines). The other one was new to the airline (6 months), although an experienced, former Transbrasil 767 captain.
Working for TAM for the past two years, I have not seen an approach being conducted in selected speed. Normally, corrections are applied on the perf. page of the FMCG and managed speed is used.
I had to go to the airport today, and saw the accident site...after almost 48 hrs, it was still burning (isolated fire). What a horrible site....
The flash: might by a tire burst, compressor stall, runway edge light, taxiway light, etc...too many possiblities.