An Indonesian family, whose relatives died in the Sriwijaya Air flight crash earlier this month, has sued Boeing, alleging that the aircraft was ‘defective and unreasonably dangerous’, the Guardian reported. The Sriwijaya flight SJ-182, 26-year-old, nosedived into the Java sea minutes after take off. There were 62 people on board.

As per report, Wisner Law Firm, representing the family of three victims, filed a lawsuit at the circuit court of Cook county in Illinois. This is where Boeing is headquartered.

The lawsuit alleges that Boeing 737-500 was defective in multiple ways. The documents also mentioned the presence of possible corrosion on “the engine bleed-air fifth stage check valve… causing it to become stuck in the open position during flight, resulting in an uncontrollable compressor stall”.

The crash probe is likely to take months, but a preliminary report is expected next month.

However, the hunt continues for a still-missing cockpit voice recorder, as investigators pore over details from a retrieved flight data recorder — so-called black boxes that could be critical to the probe.

Maintenance logs pointed to an issue with the plane’s autothrottle, which controls engine power, authorities said, but it was not clear what role — if any — the apparent malfunction played.

Investigators have managed to recover and read the plane’s flight data recorder, but are still searching for the cockpit voice recorder, which will allow them to listen to conversations between the pilots.

According to the Guardian, the aircraft did not have the same cockpit software that was found in the two fatal crashes of Boeing’s 737 MAX in Indonesia and Ethiopia.

Previously, Boeing, charged with fraud and conspiracy in connection with two crashes, was fined $2.5 billion by the US Department of Justice.

In October 2018, 189 people were killed when a Lion Air Boeing 737 MAX jet crashed near Jakarta.

That accident — and another in Ethiopia — led to the grounding of the 737 MAX worldwide over a faulty anti-stall system. The 737 that went down Saturday was first produced decades ago and was not a MAX variant.