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Last updated: 21 September 2021
Datum:Dienstag 16 Juli 1957
Flugzeugtyp:Silhouette image of generic CONI model; specific model in this crash may look slightly different
Lockheed L-1049C-55-81 Super Constellation
Fluggesellschaft:KLM Royal Dutch Airlines
Kennzeichen: PH-LKT
Werknummer: 4504
Baujahr: 1953
Triebwerk: 4 Wright R-3350 (972TC18DA3)
Besatzung:Todesopfer: 9 / Insassen: 9
Fluggäste:Todesopfer: 49 / Insassen: 59
Gesamt:Todesopfer: 58 / Insassen: 68
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:1,2 km (0.8 Meilen) vom Land entfernt von Biak-Mokmer Airport (BIK) (   Indonesien)
Flugphase: Während des Fluges (ENR)
Betriebsart:Internationaler Linienflug
Flug von:Biak-Mokmer Airport (BIK/WABB), Indonesien
Flug nach:Manila International Airport (MNL/RPLL), Philippinen
KLM flight KL844, a Lockheed L-1049C Super Constellation, named "Neutron", was destroyed when it impacted the water off Biak Airport, Netherlands New Guinea (now Indonesia).
KL844 was the return leg of a weekly return flight between Amsterdam, the Netherlands and Biak. The first leg of the flight was from Biak to Manila, Philippines.
The aircraft took off from Biak-Mokmer Airport's runway 10 at 03:32 at night. Shortly after takeoff, the flight crew radioed the tower controller, asking to keep the runway lights on and to requested permission for a low run over the airfield. Both requests were granted. The aircraft was in a 180 degree left hand turn when it gradually lost altitude until it struck the sea and broke apart. The wreckage sank in 250 m of water.

Probable Cause:

PROBABLE CAUSE: "The explanation of the accident lies either in an error on the part of the pilot or in a technical failure. The Board was unable to state whether the accident could have been caused by a combination of both pilot error and technical failure. The Board was of the opinion that low runs should not be made by aircraft on scheduled services. The magnitude of the danger that is inherent in the proximity of the ground on takeoff and landing should not be increased unnecessarily by flying at low altitude."

Accident investigation:
Investigating agency: Raad vd Luchtvaart
Status: Investigation completed
Duration: 237 days (8 months)
Accident number: Final report
Download report: Final report

» ICAO Accident Digest No.9, Circular 56-AN/51 (141-145)
» Nederlandse Constallations / H.Dekker
» Vrij Nederland 13.02.1999 (p.18-19)


photo of Lockheed-L-1049C-Super-Constellation-PH-LKT

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 Biak-Mokmer Airport to Manila International Airport as the crow flies is 2398 km (1499 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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Lockheed L-1049

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