The last four flights a Lion Air passenger plane embarked upon before its fatal descent into the Java Sea all had a problem with the airspeed indicator, Indonesia's National Transportation Safety Committee has found.
Tjahjono said that Indonesian investigators, Boeing, and the US National Transportation Safety Board would inspect Boeing 737 Max 8 planes in light of the airspeed indicator problem.
At the meeting, Tjahjono said information downloaded from the flight data recorder is consistent with reports the plane's speed and altitude were erratic.
"We are formulating, with NTSB and Boeing, detailed inspections regarding the airspeed indicator", according to Soerjanto Tjahjono, head of the committee. It was not immediately clear whether the problem with the crashed jet stemmed from a mechanical or maintenance issue, and US authorities responded cautiously to suggestions of fleet-wide checks.
Boeing, the manufacturer of the 737 MAX 8, and United States aviation investigators at the NTSB have been working with Indonesian experts on the analysis of the flight data recorder in Indonesia.
"I'm still of the opinion that losing airspeed on the airplane shouldn't result in losing the airplane", Cox said. "Data from the black box showed that the two flights before Denpasar-Jakarta also experienced the same problem". The audio device may be crucial to unraveling what happened during the flight's final moments.
Rescuers use a crane to retrieve part of the landing gears of the crashed Lion Air jet from the sea floor in the waters of Tanjung Karawang, Indonesia, Sunday, Nov. 4, 2018.
The recorder shows the jet's last four flights all had an airspeed indicator problem.
Lion Air president director Edward Sirait said the carrier hadn't yet received any bulletins from Boeing.
"They need to find that cockpit voice recorder", Waldock said, "because that is going to tell us what the crew did in response to whatever situation they had".
The focus of continuing efforts will be to recover additional victim remains and to locate the CVR, he said.
Relatives weep as they pray for victims of the Lion Air jet that crashed into the Java Sea during a press conference in Jakarta, Indonesia on November 5, 2018.
After 10 minutes in the air, the plane dropped as it lost power.
The day before the crash, the Boeing 737 MAX 8 - which had only around 800 flying hours on the clock - had experienced a significant drop in altitude on a flight from Bali to Jakarta, passenger Robbi Gaharu said.
"The Lion Air aircraft hit the water at high speed and it didn't break apart mid-air", said Tjahjono.
Authorities have yet to recover the jet's cockpit voice recorder from the sea floor, just northeast of Jakarta, where the plane crashed 13 minutes after taking off from the Indonesian capital.