Garuda Indonesia Flight 152

Garuda Indonesia
Industry	Airline
Founded	1949
Headquarters	Jakarta, Indonesia
Products	Air transportation services
Website	www.garuda-indonesia.com

Garuda Indonesia Flight 152 (GA152/GIA152) was a domestic scheduled service operated by Garuda Indonesia between Soekarno–Hatta International Airport, Tangerang, and Polonia International Airport, Medan, Indonesia. On 26 September 1997, the Airbus A300B4-220 crashed into forested mountainous terrain near Buah Nabar, Sibolangit, resulting in the deaths of all 222 passengers and 12 crew members aboard. This tragedy stands as the deadliest aviation accident in Indonesian history and ranks as the fourth most fatal incident involving an Airbus A300.

Aircraft

The aircraft involved was an Airbus A300B4 FFCC ("forward-facing crew concept"), a variant of the A300B4 where the flight engineer’s station was removed and control panels were repositioned overhead between the two pilots. This cockpit design resembles that of the Airbus A310 series, although the FFCC retained much of the original A300’s analogue flight instrumentation. The FFCC model eventually developed into the A300-600 series, which featured fully modernized flight decks consistent with the A310 and introduced electronic displays. Both pilots held qualifications for flying the FFCC and -600 series; however, questions were raised regarding the sufficiency of their type conversion training.

Delivered in 1982, this aircraft was powered by two Pratt & Whitney JT9D-59A turbofan engines. Prior to the accident, it had accumulated over 27,000 flight hours and completed approximately 16,500 takeoff and landing cycles.

Accident

At 13:13 local time, air traffic controllers in Medan cleared Flight 152 for an ILS approach to Runway 5, initially instructing a heading of 316 degrees. The flight crew was led by Captain Hance Rachmo Wiyogo (41), who had nearly two decades with Garuda Indonesia and close to 12,000 flight hours, along with First Officer Tata Zuwaldi (41), formerly a flight engineer who had recently transitioned to pilot duties. Controllers directed them to turn left to a heading of 240 degrees to intercept the ILS localizer. Two minutes before impact, a further left turn to 215 degrees was commanded. At 13:30, instructions were given for descent to 2,000 feet and a right turn toward heading 046 degrees for final approach.

Complications arose due to confusion with another aircraft sharing the same flight number—Merpati Nusantara Airlines Flight 152—which had operated in the vicinity earlier that day. The controller initially addressed Garuda Flight 152 using Merpati’s call sign, causing the pilots to ignore those instructions. Upon correcting the call sign to "Indonesia 152," most instructions were repeated; however, crucial information that the approach would be conducted from the south side of the runway was omitted.

The pilots operated under the assumption they were approaching from the north side as per their charts. When instructed to turn right to heading 046 at an altitude of 2,000 feet, Captain Wiyogo instead initiated a left turn. The First Officer noticed this error belatedly and alerted the captain. Throughout this period, confusion persisted regarding correct headings as controllers lacked an accurate radar picture due to slow refresh rates and incomplete guidance.

During these maneuvers, the aircraft descended below the assigned altitude of 2,000 feet—likely because of incorrect altitude settings—without being detected by the crew who were preoccupied with correcting their heading. Approximately five seconds prior to impact, an increase in pitch angle and engine thrust suggested an attempt to regain altitude. The cockpit voice recorder captured sounds consistent with tree strikes alongside pilot exclamations just before crashing into a ravine roughly 27 kilometers from Runway 05’s threshold and about 18 kilometers south of its centerline.

The plane impacted at approximately 13:32 with its right wing low, turning toward the airport on a heading between 230 and 240 degrees at roughly 1,550 feet above mean sea level. All 234 individuals onboard lost their lives.

Victims

Most of the passengers were Indonesian nationals, accompanied by smaller groups including eight from Turkey, six from Japan, four from Germany, three from Taiwan, two each from the United States, the United Kingdom, Canada, and Ghana, as well as individual travelers from Australia, Belgium, the Netherlands, France, Italy, Malaysia, Pakistan, South Africa, and Sweden.

Passenger and Crew Nationalities

Nationality	Passengers	Crew	Total
Indonesia	184	12	196
Japan	6	0	6
Germany	4	0	4
Taiwan	3	0	3
Canada	2	0	2
United States	2	0	2
United Kingdom	2	0	2
France	1	0	1
Italy	1	0	1
Malaysia	1	0	1
Netherlands	1	0	1
Australia	1	0	1
Sweden	1	0	1
Belgium	1	0	1
Total (14 Nationalities)	222	12	234

Recovery of Passenger Remains

Out of the victims retrieved from the wreckage, forty-eight bodies remained unidentified and were interred collectively in a mass grave near Polonia Airport in Medan, alongside sixty-one casualties from the 1979 Garuda Fokker F28 accident. The other 186 remains were successfully identified and handed over to their families for personal funeral arrangements.

Investigation

The National Transportation Safety Committee (NTSC) concluded that miscommunication during radar vectoring led to an incorrect left turn instead of a right one. This error distracted the flight crew from monitoring their altitude properly, resulting in the aircraft descending below its cleared altitude of 2000 feet and colliding with treetops at approximately 1550 feet above sea level.

The investigation report highlighted deficiencies in Garuda's pilot transition training between the A300-600 model featuring digital cockpit displays and the older A300B4-FF with analog instruments. It suggested that the captain’s limited experience with analog systems may have contributed to his cognitive overload.

Additional factors identified included an unexplained failure of the Ground Proximity Warning System (GPWS) and insufficiently detailed vectoring charts used by air traffic controllers in Medan.

Lawsuits

The initial legal action, initiated in September 1998 on behalf of American passengers Fritz and Djoeminah Baden, was soon accompanied by further claims filed in Chicago courts representing an additional 26 plaintiffs. The defendant named was Sundstrand Corporation, which later became Hamilton Sundstrand, the producer of the GPWS. The complainants argued that the device's design was flawed and that the manufacturer had been aware of its limitations in mountainous regions prior to the accident. They contended that a properly functioning GPWS could have averted the crash. Sundstrand refuted these allegations, and after nearly six years of proceedings, the matter was resolved through an out-of-court settlement.

Another case brought against Garuda Indonesia in Oregon was dismissed because US courts lacked jurisdiction over domestic flights operated by a foreign government-owned airline.

Aftermath

Flights operating between Jakarta and Medan currently use flight numbers 118, 182, 184, 186, 188, and 190, now serving Kualanamu International Airport since it replaced Polonia Airport in 2013. As of January 2023, Garuda Indonesia maintains flight number 152 on the Jakarta–Batam route, utilizing a Boeing 737-800 aircraft.

Dramatization

The Garuda Indonesia Flight 152 disaster is depicted in Season 17, Episode 5 of Mayday (also known as Air Crash Investigation), under the title "Lethal Turn".

External links