Lion Air Jet 'Black Box' Reveals Plane Had Airspeed Problem

The head of Indonesia's National Transportation Safety Committee, Soerjanto Tjahjono, says the "black box" data recorder from the crashed Lion Air jet shows its last four flights all had an airspeed indicator problem.

Tjahjono and investigator Nurcahyo Utomo told a news conference on Monday that the problem was similar on each of the four flights, including the fatal flight on October 29 that killed all 189 people on board.

The stunning revelation on Monday comes after angry relatives confronted the airline's co-founder at a meeting organised by Indonesian officials.

At the meeting, Tjahjono said information downloaded from the flight data recorder is consistent with reports the plane's speed and altitude were erratic.

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Searchers are still trying to locate the cockpit voice recorder.