Indonesian investigators have recruited assistance from Australian counterparts to help establish whether meteorological conditions played a role in the Lion Air Boeing 737-800 approach crash to Bali.
The 737 landed on water, short of the runway, as it arrived at Denpasar on 13 April.
Indonesia's National Transportation Safety Committee is looking into the weather at the time of the accident. Denpasar's meteorological station indicated good visibility and light winds, although it signalled the presence of cumulonimbus clouds in the vicinity.
The inquiry has sought "weather and visibility reports from Australian flight crews" operating into Denpasar close to the time of the crash, says the Australian Transport Safety Bureau.
All occupants of the 737, which had only been in service for a few months, survived the accident, although the jet was severely damaged.