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Last updated: 18 November 2018
Status:Preliminary
Date:Monday 29 October 2018
Time: 06:31
Type:Silhouette image of generic B38M model; specific model in this crash may look slightly different
Boeing 737 MAX 8
Operator:Lion Air
Registration: PK-LQP
C/n / msn: 43000/7058
First flight: 2018-07-30 (3 months)
Total airframe hrs:800
Cycles:440
Engines: 2 CFMI LEAP-1B
Crew:Fatalities: 8 / Occupants: 8
Passengers:Fatalities: 181 / Occupants: 181
Total:Fatalities: 189 / Occupants: 189
Aircraft damage: Destroyed
Aircraft fate: Written off (damaged beyond repair)
Location:13 km (8.1 mls) N off Tanjung Bungin (   Indonesia)
Phase: En route (ENR)
Nature:Domestic Scheduled Passenger
Departure airport:Jakarta-Soekarno-Hatta International Airport (CGK/WIII), Indonesia
Destination airport:Pangkal Pinang Airport (PGK/WIKK), Indonesia
Flightnumber:JT610
Narrative:
Lion Air flight 610, a Boeing 737 MAX 8, crashed into the sea shortly after takeoff from Jakarta-Soekarno-Hatta International Airport, Indonesia. The flight took off from runway 25L at Soekarno-Hatta Airport at 06:21 hours local time. Weather was fine with light winds, scattered clouds at 2000 feet and a visibility of 8000 m.
The aircraft made a climbing left hand turn after takeoff. Shortly afterwards the flight crew radioed the controller, requesting a return to the airport.
After the flight passed the ADS-B reported altitude of 2100 feet, data points briefly show a lower altitude of around 1475 feet. Altitude data sent via ADS-B continue to show an erratic pattern, varying roughly between 4500 and 5350 feet, The values then rapidly decline until contact is lost at 06:32 hours. The aircraft impacted the sea some 15 km north off Jakarta. All 189 persons on board died in the accident.
Search and rescue personnel recovered the flight data recorder (FDR) and other debris on November 1, at 30-35 m below the water surface. Indonesian investigators of the NTSC subsequently revealed that the aircraft experienced erroneous input from one of its AOA (Angle of Attack) sensors.
If the flight control system on a Boeing 737 MAX aircraft receives an erroneously high single AOA sensor input, there is a potential for repeated nose-down trim commands of the horizontal stabilizer. Such a specific condition could among others potentially result in the stick shaker activating on the affected side and IAS, ALT and/or AOA DISAGREE alerts.
The NTSC reported that an airspeed indication anomaly did occur on the accident aircraft's last four flights.

On November 6, 2018, Boeing issued an Operations Manual Bulletin (OMB) directing operators to existing flight crew procedures to address circumstances where there is erroneous input from an AOA sensor.
On November 7, the FAA issued an emergency Airworthiness Directive requiring "revising certificate limitations and operating procedures of the airplane flight manual (AFM) to provide the flight crew with runaway horizontal stabilizer trim procedures to follow under certain conditions."

Sources:
» FAA Emergency AD 2018-23-51 (pubished 7 November 2018)
» Ministry of Transportation Indonesia - statement

METAR Weather report:
23:00 UTC / 06:00 local time:
WIII 282300Z VRB02KT 8000 BKN022 26/25 Q1009 NOSIG

23:30 UTC / 06:30 local time:
WIII 282330Z 16003KT 8000 SCT020 27/25 Q1010 NOSIG


Follow-up / safety actions

FAA issued 1 Emergency Airworthiness Directive

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Photos

photo of Boeing 737 MAX 8 PK-LQP
photo of Boeing 737 MAX 8 PK-LQP
photo of Boeing 737 MAX 8 PK-LQP
photo of Boeing 737 MAX 8 PK-LQP
photo of Boeing 737 MAX 8 PK-LQP
photo of Boeing 737 MAX 8 PK-LQP
photo of Boeing 737 MAX 8 PK-LQP
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Aircraft history
date registration operator remarks
30 July 2018 N1786B Boeing first flight
13 August 2018 PK-LQP Lion Air delivery flight BFI-HNL-GUM-CGK
18 August 2018 PK-LQP Lion Air first commercial flight JT324 CGK-BDJ

Map
This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Jakarta-Soekarno-Hatta International Airport to Pangkal Pinang Airport as the crow flies is 442 km (277 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Boeing 737-8 MAX

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