A "pan pan" indicates an urgent situation and is one step below a Mayday.
The Denpasar-Jakarta flight landed at the Indonesian capital's airport at 10:55 p.m. local time on Sunday.
The pilot of that flight after taking off from Denpasar, Bali island, on Sunday made a distress call, but after the plane started behaving normally, he chose to continue to Jakarta, the destination of the flight, landing there at 10.55 pm local time.
While investigations are ongoing, there are a selfies clicked by the passengers just before their ill-fated flight that have emerged online.
Meanwhile, Herson, chief of the airport authority for the Bali-Nusa Tenggara area, told that the pilot of a Lion Air flight from Indonesia's Bali island on Sunday made a radio alert minutes after take-off due to technical problems, but they were overcome and he pushed on to Jakarta.
Rescue workers load up recovered debris of Lion Air flight JT610 onto a truck at Tanjung Priok port in Jakarta, Indonesia, November 2, 2018.
The suspended technicians "issued the recommendations for that (final) flight", the ministry said in a press release.More news: Marcus Rashford helps Manchester United make 2-1 comeback against Bournemouth
Indonesian airlines were barred in 2007 from flying to Europe because of safety concerns, though several were allowed to resume services in the following decade.
The investigation of the first crash of a Boeing Co 737 MAX, introduced into commercial service previous year, will also be scrutinised by the global aviation industry.
Inspections of the 737 Max 8 aircraft operated by Lion Air and Garuda Indonesia since the accident found no technical issues, according to a statement by the country's Transport Ministry.
According to Gaharu, a management consultant and frequent flier, Sunday's Flight JT43 was around two hours late taking off from the Indonesian resort island.
However, the pilots kept the plane at a maximum altitude of 28,000 feet compared with 36,000 feet on the same route earlier in the week.
Search teams are also still looking for the plane's second block box recorder, after the first was located on Thursday.
An Italian citizen Andrea Manfredi was reported to be among the 189 people onboard the Boeing 737 Max 8 operated by Lion Air with flight code JT 610 that crashed during its flight from Indonesia's worldwide airport Soekarno-Hatta (CGK) to Pangkalpinang's Depati Amir airport (PGK).
"The Lion plane requested to return back to Bali five minutes after takeoff, but then the pilot said the problem had been resolved and he was going to go ahead to Jakarta".More news: Brazil enters new era with far-right president-elect
"He requested to return to the airport" but "updated and flew to Jakarta", Herson said of the pilot. The nation's navy said on Oct 31 that they stumbled on "quite a large" object, about 20 meters long, but that turned out to be a false alarm.
Passengers can be heard screaming and frantically praying as the plane plummeted.
Another passenger said the flight was turbulent and the seatbelt signs remain on throughout the flight.
"When the plane took off, it climbed and then went down".
One of them, Diah Mardani, told a television program earlier this week that after takeoff "the plane suddenly fell, then rose, then fell again harder and shook".
"All the passengers started shouting God is Great", she said.
While it's too early to know if airspeed indicators will prove to be related to Monday's accident, the possibility underscores the need for better and more consistent pilot training, said David Greenberg, an industry consultant and former operations executive at Delta Air Lines Inc.More news: USA charges financier, former Goldman bankers for 1MDB