Sukhoi Flight 36801

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Sukhoi Flight 36801
Sukhoi SuperJet 100 at MAKS-2011 airshow.jpg

The unlucky machine at the MAKS -2011
Accident summary
Accident type CFIT
place Gunung Salak , Jawa Barat , IndonesiaIndonesiaIndonesia 
date May 9, 2012
Fatalities 45
Survivors 0
Aircraft
Aircraft type Sukhoi Superjet 100
operator Sukhoi
Mark 97004
Passengers 41
crew 4th
Lists of aviation accidents

The Sukhoi flight 36801 was a demonstration flight of the Russian aircraft manufacturer Sukhoi carried out with a Sukhoi Superjet 100 ( aircraft registration number: 97004) , which crashed on May 9, 2012 with 45 occupants on the slope of the Salak volcano in the Indonesian province of Jawa Barat . Everyone on board was killed.

plane

The Sukhoi Superjet 100-95 had completed almost 850 hours in over 500 flights since its maiden flight on July 25, 2009. No problems were known up to the time of the accident.

background

The manufacturer Suchoi wanted to carry out demonstration flights in six countries as part of the Welcome Asia promotion tour. Jakarta in Indonesia was the fourth stop on this tour, which began in Kazakhstan ( Astana ) at the KADEX 2012 defense technology fair and went to Indonesia via Pakistan ( Karachi ) and Myanmar ( Naypyidaw ). Two more stations were planned in Laos ( Vientiane ) and Vietnam ( Hanoi ). The Superjet-100 with the registration number 97004 took over the tour on May 6, 2012 in Pakistan after the advance warning system of the aircraft with the registration number 97005, which had started the tour, reported possible technical problems with one of the engines during the flight to Karachi.

Flight history

Accident site (Indonesia)
Accident site
Accident site
Location of the accident site in Indonesia
Sukhoi RRJ-95B crash.gif

At the beginning of August 2012, the Indonesian investigative authority published a first interim report with the facts known up to that point in time. Among other things, the following flight history is recorded in it:

  • The flight involved in the accident was the second demonstration flight of the day. He was an IFR - flight plan carried out.
  • The take-off from Halim Perdanakusuma International Airport took place on May 9, 2012 at 2:21 p.m. local time (7:21 a.m. UTC ). After taking off, the aircraft rose to 10,000  feet .
  • At 2:26 p.m., the pilots asked the air traffic controller for clearance to be allowed to descend to 6,000 feet. The air traffic controller asked for the request to be repeated, whereupon the pilots again requested clearance to descend to 6,000 feet. The air traffic controller then issued the required clearance.
  • At 2:28 p.m., the pilots requested clearance for a full circle to the right. This was approved by the pilot. At that time, the aircraft was in the training room of the Atang Sanjaya Air Force Base. After completing the circle, the aircraft left its flight path without being noticed by the pilots, as they explained the terrain warning system to a passenger; the plane was heading for the Salak volcano.
  • At 14:50 the aircraft disappeared from the controller's radar screen.

The wreck was found on May 10 at 8:35 a.m. local time. It was about 6,000 feet above sea level on a mountain slope that fell practically vertically. The safe altitude in this area is 6,900 feet.

The weather at the time of the accident was hazy, with a visibility of 4 to 5 km and light to medium cloud cover.

Victim

Due to adverse weather and visibility conditions, the search operations of the Indonesian aid workers could not fully begin until the morning of May 10, 2012. A spokesman for the Indonesian representation of the aircraft manufacturer Sukhoi said there were no survivors, which was later confirmed by the rescue workers.

Since the Superjet 100-95 had taken off on a demonstration flight, the 45 victims included the commander Alexander Jablonzew, the co-pilot Alexander Kochetkov and the flight attendants and development engineers, executives from Sukhoi (including the sales manager Yevgeny Grebenschikow) and other companies. In addition to Indonesians, eight Russians, one French and one US citizen were on board the machine.

examination

Mountain flank with the accident site (right)

The search for the flight recorder of the crashed aircraft turned out to be very difficult due to the extremely impassable terrain. In the evening hours of May 15, 2012, special forces of the Indonesian army were able to find parts of it in a 500 m deep gorge and then salvage them. The first part of the flight recorder found only contained the voice recorder , so the search for the flight data recorder had to be continued. On May 30, 2012, Indonesian search parties also found the flight data recorder near the accident site.

Russia and Indonesia agreed to carry out the examination and evaluation of the flight recorders in Indonesia and to bring the necessary equipment there - if not already available on site.

First evaluations of the recordings of the voice recorder two weeks after the accident showed that the terrain warning system of the machine was functional. Furthermore, they did not provide any indications of a malfunction of other technical components. The final investigation results published in December 2012 confirmed that the cause of the accident was solely due to human error, both in the cockpit and in air traffic control.

According to the final report, warnings from the terrain warning system sounded from 38 seconds before impact, but the commander ignored them in the erroneous assumption that the terrain was level. Finally, he switched off the warning system with the comment that there might be an error in the database. Seven seconds before the impact, a final warning sounded that the chassis had not extended.

A re-enactment in the flight simulator is said to have shown that it would still have been possible up to 24 seconds after the first terrain warning to avoid the danger by taking appropriate action (climbing, turning).

Individual evidence

  1. ↑ a b Mavis Toh: Superjet 100 flew in low-traffic Indonesian airspace: DGCA. In: flightglobal.com. May 11, 2012, accessed on May 11, 2012 (English): “Updated data from Sukhoi shows that there were 45 people on board the crashed aircraft. They include journalists, pilots and engineers from Sukhoi and officials from various Indonesian carriers. "
  2. ↑ a b Aircraft Accident Investigation Report KNKT May 12, 09/04. (PDF, 723 KB) (No longer available online.) National Transportation Safety Committee - Ministry of Transportation - Republic of Indonesia, May 9, 2012, archived from the original on July 31, 2013 ; accessed on November 2, 2012 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.dephub.go.id
  3. ↑ http://www.kommersant.ru/doc/1935280
  4. ↑ Broken Russian superjet. No survivors. Morgenpost.de, May 10, 2012, accessed on May 10, 2012 .
  5. ↑ Press release of May 11, 2012 . Sukhoi homepage. Retrieved May 12, 2012
  6. ↑ Passenger list ( Memento of the original from May 22, 2012 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. . Homepage of the Russian Aviation Consortium OAK (UAC). Retrieved May 12, 2012  @1@ 2Template: Webachiv / IABot / www.uacrussia.ru
  7. ↑ a b Indonesian search teams recover black boxes. Crashed superjet. In: SPIEGEL ONLINE. SPIEGEL ONLINE GmbH, May 16, 2012, accessed on May 16, 2012 (With photos of the recovered black box.).
  8. ↑ Search parties find flight data recorders. In: SPIEGEL ONLINE. SPIEGEL ONLINE GmbH, May 31, 2012, accessed on May 31, 2012 .
  9. ^ Greg Waldron: Sukhoi Superjet cockpit voice recorder to remain in Indonesia. In: flightglobal.com. May 17, 2012, accessed May 18, 2012 .
  10. ↑ David Kaminski-Morrow: Terrain warning system on crashed Superjet was working: United Aircraft. In: flightglobal.com. May 24, 2012, accessed May 25, 2012 .
  11. ↑ Final report ( Memento of the original from April 2, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF file; 6.59 MB), National Transportation Safety Committee 18/12/2012  @1@ 2Template: Webachiv / IABot / kemhubri.dephub.go.id
  12. ↑ Pilot error led to superjet crash. Air crash in Indonesia. In: Spiegel Online. SPIEGEL ONLINE GmbH, December 18, 2012, accessed on December 19, 2012 .

Web links

Commons : Suchoi Superjet 97004  - Collection of images, videos and audio files
  • Preliminary investigation report (PDF file; 723 kB) of the National Transportation Safety Committee (Ministry of Transportation of the Republic)
  • Final report (PDF file; 6.59 MB), National Transportation Safety Committee 18/12/2012

Coordinates: 6 ° 42 ′ 36 ″  S , 106 ° 44 ′ 41 ″  E