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Last updated: 20 January 2021
Datum:Mittwoch 16 Januar 2002
Flugzeugtyp:Silhouette image of generic B733 model; specific model in this crash may look slightly different
Boeing 737-3Q8
Fluggesellschaft:Garuda Indonesia Airways
Kennzeichen: PK-GWA
Werknummer: 24403/1706
Baujahr: 1989-04-07 (12 years 10 months)
Anzahl Zyklen der Zelle:24139
Triebwerk: 2 CFMI CFM56-3B1
Besatzung:Todesopfer: 1 / Insassen: 6
Fluggäste:Todesopfer: 0 / Insassen: 54
Gesamt:Todesopfer: 1 / Insassen: 60
Sachschaden: Zerstört
Konsequenzen: Written off (damaged beyond repair)
Unfallort:22,5 km (14.1 Meilen) W of Yokyakarta (   Indonesien)
Flugphase: Annäherung (APR)
Betriebsart:Inländischer planmäßiger Passagierflug
Flug von:Mataram-Selaparang Airport (AMI/WADA), Indonesien
Flug nach:Yogyakarta-Adisutjipto Airport (JOG/WARJ), Indonesien
Flight 421 departed Mataram around 15:00 and climbed to the cruising altitude of FL310. During the initial descent the crew decided to deviate from the planned route because of thunderstorms along their planned route. At 16:19 the flight encountered an area of severe turbulence and thunderstorm activity with extremely heavy precipitation and hail. The crew attempted to fly towards a gap between two storm cells. About 90 seconds after entering the thunderstorm, as the airplane descended through about FL180 at a flight idle power setting, both engines flamed out. The crew carried out three unsuccessful attempts to restart the engines followed by one unsuccessful attempt to start the auxiliary power unit (APU). The flight crew’s reported actions to restart the engines and APU however, were contrary to the procedures contained in the Boeing 737 Operations Manual. For instance, they waited only about 1 minute between each restart attempt instead of three minutes.
As the airplane descended below an overcast cloud layer at about 8,000 feet, the crew observed the Bengawan Solo River and decided to attempt to ditch the airplane into the river with flaps and landing gear in a shallow, 1 metre deep part of the river. One stewardess did not survive the crash.
Similar occurrences (Boeing 737-300 double engine flameout while descending in heavy precipitation with engines at flight idle) happened May 24, 1988 and July 26, 1988. Following these incidents OMB 88-5 and AD 6-14-88 were issued to require minimum rpm of 45% and to restrict the use of autothrust in moderate/heavy precipitation; engine modification was provided for increased capacity of water ingestion.

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photo of Boeing-737-3Q8-PK-GWA
accident date: 16-01-2002
type: Boeing 737-3Q8
registration: PK-GWA
photo of Boeing-737-3Q8-PK-GWA
accident date: 16-01-2002
type: Boeing 737-3Q8
registration: PK-GWA

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 Mataram-Selaparang Airport to Yogyakarta-Adisutjipto Airport as the crow flies is 626 km (392 miles).
Accident location: Global; accuracy within tens or hundreds of 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 737-300

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