Fatal Investigation Closed

JT610 - 737 MAX MCAS Control Loss

Monday, October 29, 2018 at 6:33 AM (GMT+7)
737 MAX 8
Lion Air
Java Sea off Karawang Regency

The Boeing 737‑8 MAX departed Jakarta’s Soekarno‑Hatta International Airport on a domestic service to Pangkal Pinang with 181 passengers and 8 crew. Seconds after liftoff an angle‑of‑attack sensor transmitted erroneous high‑angle data, activating the Maneuvering Characteristics Augmentation System (MCAS). MCAS repeatedly trimmed the stabiliser nose‑down despite crew attempts to maintain pitch. About eleven minutes after departure the aircraft entered a steep dive and struck the Java Sea at high speed, destroying the airframe and resulting in the loss of all persons on board. Indonesian investigators later found that faulty sensor input, maintenance lapses, insufficient crew training and MCAS design shortcomings led to loss of control in flight.

Aircraft & Operator Information

Aircraft
Model737 MAX 8
ManufacturerBoeing
Operator
NameLion Air
IATAJT
Technical
RegistrationPK‑LQP
Manufactured2018
Additional
CountryIndonesia
Fleet Size118 aircraft

Incident Location

Departure
Destination
Incident Site
Route
Displayed routes are geodesic arcs that show the shortest route between destinations. The arc does not reflect a flight's actual flight path.
Departure
AirportCGK
NameSoekarno-Hatta International Airport
Destination
AirportPGK
NameDepati Amir Airport
Incident Site
Java Sea off Karawang Regency
Emergency Landing
StatusNot Available

Weather Conditions (METAR)

Raw METAR WIII 282330Z 16003KT 8000 SCT020 27/25 Q1010 NOSIG
AirportWIII
Time11:30 PM (GMT+0)
Temperature27.0°C
Dewpoint25.0°C
Wind160° at 3 knots
Visibility 8000 m
Cloud Layer 1Scattered (SCT) 2,000ft AGL
Pressure1010 hPa
WIII
11:30 PM (GMT+0)
Atmospheric
Temperature27.0°C
Dewpoint25.0°C
Pressure1010 hPa
Wind & Visibility
Wind160° at 3 knots
Visibility 8000 m
Clouds
Layers Scattered (SCT) 2,000ft AGL
Highlighted METAR entries relate to weather conditions within 30 minutes of the incident time.

Casualty Information

189Total Fatalities
0Total Injuries
189People Involved
Fatal
Injured
Uninjured
Unknown
Crew
8
0
0
0
Passengers
181
0
0
0
Total Onboard
189
0
0
0
Overall
189
0
0
0

References

  • Final Report
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