Doomed Lion Air jet was ‘not airworthy’ on penultimate flight: investigators

Indonesia’s National Transportation Safety Committee (KNKT) sub-committee head for air accidents, Nurcahyo Utomo, holds a model airplane while speaking next to deputy chief of KNKT Haryo Satmiko during a news conference on its investigation into a Lion Air plane crash last month, in Jakarta, Indonesia November 28, 2018. REUTERS/Darren Whiteside

By Cindy Silviana and Fergus Jensen

JAKARTA (Reuters) – A Lion Air jet that crashed into the sea off Indonesia last month was not in an airworthy condition on its second-to-last flight, when pilots experienced similar problems to those on its doomed last journey, investigators said on Wednesday.

Contact with the Boeing 737 MAX jet was lost 13 minutes after it took off on Oct. 29 from the capital, Jakarta, heading north to the tin-mining town of Pangkal Pinang.

In a preliminary report, Indonesia’s transport safety committee (KNKT) focused on the airline’s maintenance practices and pilot training and a Boeing anti-stall system but did not give a cause for the crash that killed all 189 people on board.

The report unveiled fresh details of efforts by pilots to steady the jet as they reported a “flight control problem”, including the captain’s last words to air traffic control asking to be cleared to “five thou” or 5,000 feet.

Lion Air CEO Edward Sirait on Wednesday evening rejected some media reports quoting KNKT that the airline’s Boeing 737 passenger jet that crashed on Oct. 29 was not airworthy since its penultimate flight from Denpasar to Jakarta.

It had been cleared as airworthy by Lion Air engineers on that flight as well as its final flight, KNKT investigator Nurcahyo Utomo said earlier in the day.

“I think pilots can judge for themselves whether to continue,” said Lion Air Managing Director Daniel Putut, a former pilot.

Utomo, in contrast, pointed to multiple problems, including the “severe” issue of stall warnings occurring in tandem on the Bali-Jakarta flight that were enough for the KNKT to determine the flight should not have continued.

Information retrieved from the flight data recorder showed the “stick shaker” was vibrating the captain’s controls, warning of a stall throughout most of the flight. The captain was using his controls to bring the plane’s nose up, but an automated anti-stall system was pushing it down.

Pilots flying the same plane a day earlier had experienced a similar problem, en route from Denpasar, Bali to Jakarta, until they used switches to shut off the system and used manual controls to fly and stabilize the plane, KNKT said.

“The flight from Denpasar to Jakarta experienced stick shaker activation during the takeoff rotation and remained active throughout the flight,” the committee said.

“This condition is considered un-airworthy” and the flight should have been “discontinued”.

The pilots of that flight reported problems to Lion Air’s maintenance team, which checked the jet and cleared it for take-off the next morning.

Former Boeing flight control engineer Peter Lemme said stick shaker activation was “very distracting and unnerving”.

“It’s not something you ever want to have happen as a pilot,” he said.

Utomo said the agency had not determined if the anti-stall system, which was not explained to pilots in manuals, was a contributing factor.

“We still don’t know yet, if it contributed or not,” he said in response to a question. “It is too early to conclude.”

In a statement, Boeing drew attention in detail to a list of airline maintenance actions set out in the report but stopped short of blaming ground workers or pilots for the accident.

REVISED ANTI-STALL SYSTEM

The manufacturer, which has said procedures for preventing an anti-stall system activating by accident were already in place, said pilots of the penultimate flight had used that drill but noted the report did not say if pilots of the doomed flight did so.

Boeing’s statement did not make any reference to a revised anti-stall system introduced on the 737 MAX which U.S. pilots and Indonesian investigators say was missing from the operating manual.

Boeing says the procedure for dealing with a so-called runaway stabiliser, under which anti-stall systems push the nose down even when the plane is not entering a stall or losing lift, had not changed between an earlier version of the 737 and the newly delivered 737 MAX.

Pilots however say the control column behaves differently in certain conditions, which could confuse pilots who have flown the earlier model.

Indonesian regulators were urged after previous accidents to improve their oversight of maintenance and pilot training.

In an interview, Indonesia’s director general of aviation, Polana Pramesti, said the agency planned to require pilots in Indonesia to be trained on simulators for the MAX series.

Pramesti also said a new regulation was being planned to limit the risk of pilot fatigue occurring and should be issued in the “near future”.

A source at the U.S. Federal Aviation Administration said a number of factors were ultimately likely to be cited as causes of the crash, including pilot training and maintenance. It had still to be determined how much, if at all, the plane design would be faulted, the source told Reuters on condition of anonymity.

The report provided new recommendations to Lion Air on safety on top of earlier recommendations about the flight manual that have already been implemented by Boeing.

Lion Air CEO Sirait said the airline would comply with KNKT’s recommendations which included ensuring pilots made the proper decision on whether to continue a flight.

Authorities have downloaded data from the flight data recorder, but are still looking for the cockpit voice recorder (CVR).

Indonesia plans to bring in a ship from Singapore able to stay in position without dropping anchor, to help with the search.

Asked what was needed from the CVR, Utomo said: “A lot. Discussions between the left and right pilots were about what? What procedures did they carry out. Were there any strange noises?”

Without it, he said there would be “a lot of guessing”.

(Reporting by Cindy Silviana and Fergus Jensen; additional reporting by Tim Hepher in Paris, David Shepardson in Washington, Tracy Rucinski in Chicago, Eric M Johnson in Seattle and Gayatri Suroyo in Jakarta; Writing by Ed Davies and Jamie Freed; Editing by Darren Schuettler, Nick Macfie and David Evans)

Tearful relatives of Indonesia jet crash victims demand answers

A man, who had family on the crashed Lion Air flight JT610, cries as he attends a news conference about the recovery process at a hotel in Jakarta, Indonesia, November 5, 2018. REUTERS/Willy Kurniawan

By Cindy Silviana and Augustinus Beo Da Costa

JAKARTA (Reuters) – Relatives of the victims of an Indonesian jet that crashed into the sea off Jakarta last week killing all 189 on board demanded answers on Monday as to why the plane had been passed fit to fly and called for no let up in the search for loved ones.

Indonesian authorities on Sunday extended by three days the search for victims and a second black box recorder from wreckage of a nearly new Boeing Co. 737 MAX that slammed into the sea a week ago only minutes after it took off from Jakarta.

At a news conference charged with emotion, relatives addressed questions to Indonesian officials including transport minister Budi Karya Sumadi and the head of the country’s transportation safety committee (KNKT).

“We are the victims here. Imagine if you were in our position,” said Najib Fuquoni, a relative of a victim, demanding an independent investigation into the crash.

Muhammad Bambang Sukandar, the father of another victim, said Lion Air technicians needed to take “full responsibility” if it was proved they had not properly attended to technical issues following the jet’s previous flight from Bali to Jakarta.

“This is not an unimportant thing. These are people’s lives,” he said, as he sought to choke back tears.

“Don’t let something like this keep happening in Indonesia,” he added.

Indonesia is one of the world’s fastest-growing aviation markets, but its safety record has been patchy. Its transport safety panel investigated 137 serious aviation incidents from 2012 to 2017.

At one stage during Monday’s news conference, relatives urged Lion Air founder Rusdi Kirana, who was in the audience, to stand up. He stood up, but did not comment and clasped his hands together as if seeking forgiveness.

The privately owned budget carrier was founded in 1999. Its aircraft have been involved in at least 15 safety incidents and it has been placed under tougher international safety restrictions than other Indonesian airlines.

While victims’ relatives are desperate to know what happened, the first crash of a Boeing 737 MAX is also the focus of scrutiny by the global aviation industry.

“As an initial step we conducted ramp checks for 11 Boeing 737 Max 8,” said transport minister Sumadi, adding that authorities were also conducting a special audit to include operating procedures and crew qualifications.

The search effort has involved 151 divers, five helicopters, 61 ships, ranging from fishing boats to ships with advanced sonar scanners, as well as underwater drones.

An Indonesian rescue diver died during the search for a second black box, parts of the plane, and human remains on the muddy seabed.

The head of KNKT Surjanto Tjahjono has said 69 hours of recorded data from 19 flights, including the one that crashed, had been downloaded successfully from a partly damaged flight data recorder recovered on Thursday.

As of Monday, 138 body bags containing human remains had been recovered and handed to police for forensic identification, yet only 14 victims had been identified.

Among the larger parts of the plane found have been a mangled engine and a damaged aircraft wheel.

Tjahjono said based on initial analysis the “engine was running with fairly high speed” when it hit the water.

While there were no signs of an explosion in the air, the plane appeared to have hit the water with huge force, he said.

“When the plane hit the water, the energy released was extraordinarily large.”

(This story has been refiled to correct to “last week” in first paragraph, not “this week”)

(Writing by Ed Davies; Editing by Simon Cameron-Moore)