Aeroflot flight 1492

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Aeroflot flight 1492
Aeroflot, RA-89098, Sukhoi Superjet 100-95B (37008931593) (2) .jpg

The RA-89098 in 2017
Accident summary
Accident type Crash landing
place Moscow Sheremetyevo Airport , Moscow , Russia Coordinates: 55 ° 58 ′ 9 ″  N , 37 ° 24 ′ 11 ″  E
date 5th May 2019
Fatalities 41
Survivors 37
Injured 10
Aircraft
Aircraft type Sukhoi Superjet 100
operator Aeroflot
Mark RA-89098
Departure airport Moscow Sheremetyevo
Destination airport Murmansk Airport
Passengers 73
crew 5
Lists of aviation accidents

Aeroflot flight 1492 was a scheduled domestic flight operated by Aeroflot from Moscow Sheremetyevo Airport to Murmansk . On May 5, 2019, a Sukhoi Superjet 100 used on this flight turned around and partially burned out after crash landing at the departure airport. 78 people (73 passengers and five crew members) were on board, 41 of whom did not survive the accident.

initial situation

The burned-out wreckage of the machine

The weather in the Moscow region was marked on May 5, 2019 by the cold front of a Medicanes , which brought thunderclouds , thunderstorms and heavy rains. The pilots were informed about the weather situation and forecast for their flight route during several scheduled briefings before take-off, in particular about expected thunderstorms between 3 and 9 p.m. local time in the area of ​​the departure airport.

The captain observed lightning even before or during boarding . Shortly before the start, he commented on the weather radar image with the phrase “holy shit”. In contrast to the subsequent flights, however, the pilots of flight 1492 did not request clearance for an alternative route around the thunderstorm cell. The Aeroflot operating manual allows pilots to fly through thunderstorms if - as with every modern passenger jet - a weather radar is on board and no billowing cumulus or thunderclouds can be seen.

According to Russian licensing regulations, an aircraft must be built in such a way that it does not get into an uncontrollable situation or an air emergency in the event of a lightning strike . At the time of the accident, 16 cases of lightning strikes were known at SSJ 100; no major damage occurred.

Flight history

After the aircraft took off from Sheremetyevo Airport at around 6:03 p.m. local time (3:03 p.m. UTC ), it began to climb. At around 6:07 pm, the commander said that they would be "shaken up", but that there was nothing to worry about. About 5 minutes after take-off and 30 km west-northwest of the take-off airport, the autopilot switched off automatically at an altitude of 7,900 ft (approx. 2,600 m) and the radio link with the air traffic controller failed . From then on, the pilot controlled the aircraft manually and in "direct mode", that is, without checking and, if necessary, making corrections by the on-board computer . According to a later statement by the pilot and preliminary results of the investigation, the aircraft had been struck by lightning or by “atmospheric electricity”. At 6:09 p.m. the pilots sent a transponder emergency code 7600 , which means that the radio has failed. Seconds later, however, they managed to reestablish radio contact with the ground using one of two backup systems on an emergency frequency. They announced that they were flying in direct mode, but that there was no emergency and - on request - the autopilot had failed.

At around 6:18 pm, the pilots put the aircraft on hold , during which they prepared for the landing. The first officer quoted from a checklist that the vertical speed before touchdown should not exceed 1.8 m / s. According to the SSJ-100 manual, however, only 1 m / s is allowed for manual landing. The landing flaps and landing gear were extended, but not the spoilers . The crew activated the automatic spoiler, but it does not work in direct control mode.

During the approach to landing, the pilots decided at 6:26 p.m. to signal an air emergency by activating the corresponding transponder emergency code. The aircraft reached the runway at around 6:30 p.m. Due to an unstabilized float and abruptly changing control inputs by the pilot, it hit the runway very hard several times, the first time with at least 2.55 g . The following second touchdown produced a value of at least 5.85g above the load limit of the aircraft. On the third contact with the ground with at least 5g, the main landing gear failed and the wing structure was damaged, whereupon fuel leaked. The plane caught fire and the rear of the machine burned out. About half of the passengers were able to leave the jet on time using the escape slides at the front. The pilots saved themselves by rappelling out of the cockpit windows.

plane

The crashed plane was a 2017-built Superjet 100-95B with the air vehicle registration RA-89098 and serial number 95135th It was designed for up to 70,000 flight hours and 54,000 flights and completed them 2,710 hours and 1,658 flights. The last A-check of the jet was carried out on April 5, 2019. The last route check , which is due after every return to the home airport, for example, took place on the day of the flight involved in the accident.

Pilots

The commander of the flight was 42 years old and had completed 6,800 flight hours without accidents or incidents, of which 1,570 with the superjet and 1,428 as superjet commander. The first officer was 36 years old and had 765 accident and incident-free flight hours, 615 of them with the superjet.

Victim

40 passengers and one crew member died as a result of the crash landing. Another crew member and two passengers suffered serious injuries. Seven people were slightly injured.

examination

In addition to the intergovernmental aviation committee responsible in Russia with the Federal Agency for Air Transport Rosawiazija , the French Bureau d'Enquêtes et d'Analyses pour la sécurité de l'aviation civile were also involved early on , due to the French engine manufacturer involved. Criminal proceedings were opened parallel to the technical investigation. The flight recorders could be recovered and on May 17, the investigation body announced that the reading of the data and the collection of the maintenance data had been completed. On June 14, 2019, the Intergovernmental Aviation Committee published an interim report on the accident investigation.

Web links

Individual evidence

  1. ↑ Patrick Zwerger: Aeroflot Superjet goes up in flames. Crash landing in Moscow. In: Flight Revue . May 6, 2019, accessed May 29, 2019 .
  2. ^ Interim report , pages 57–60.
  3. ↑ Interim Report , pages 9–11, 14 and 78–79.
  4. ^ Interim report , pages 79–80 and 91.
  5. ↑ Interim report , page 12.
  6. ^ Interim report , pages 13-16.
  7. ↑ a b c d Simon Hradecky: Accident: Aeroflot SU95 at Moscow on May 5th 2019, aircraft bursts into flames during rollout and burns down. In: The Aviation Herald . May 18, 2019, accessed on May 27, 2019 .
  8. ^ Analysis of the landing , Kommersant, May 7, 2019; "The pilot reported that lightning had hit his SSJ 100" (Пилот сообщил, что в его SSJ 100 попала молния и пробивший фюзеляж электростатический разряд привел к отказу основного канала радиосвязи и автоматики управления самолетом .)
  9. ↑ Interim report , page 6.
  10. ^ Interim report , pages 16–17 and 61.
  11. ^ Interim report , pages 18–19, 26.
  12. ↑ Interim report , page 19.
  13. ↑ Russian Airport Fire Crews Mobilized a Minute After Jet Crash-Landed. In: The Moscow Times . May 9, 2019, accessed May 27, 2019 .
  14. ^ Interim report , pages 24–27.
  15. ^ Database excerpt for Aeroflot flight 1492. Aviation Safety Network , accessed on May 29, 2019 (English).
  16. ^ Interim report , pages 52–54.
  17. ^ Interim report , pages 40–46.
  18. ↑ Interim report , page 28.
  19. ↑ EASA Joins Investigation of Sukhoi Superjet 100 Catastrophe at Moscow Airport , Sputnik, May 15, 2019
  20. ↑ “I pushed passengers out. I grabbed her by the collar ” , FAZ, May 6, 2019
  21. ↑ "Manual control is prohibited" , Novaya Gazeta , May 19, 2019
  22. ↑ МАК опубликовал предварительный отчет о катастрофе SSJ 100 в Шереметьево. In: Novaya Gazeta. June 14, 2019, Retrieved June 27, 2019 (Russian).