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ASN Wikibase Occurrence # 227132
Last updated: 25 November 2020
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Date:14-JUL-2019
Time:14:08 LT
Type:Silhouette image of generic GA8 model; specific model in this crash may look slightly different
Gippsland GA-8 Airvan
Owner/operator:Skydive Umeå
Registration: SE-MES
C/n / msn: GA8-TC320-12-178
Fatalities:Fatalities: 9 / Occupants: 9
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Storsandskär, near Umeå -   Sweden
Phase: En route
Nature:Parachuting
Departure airport:Umeå Airport (UME/ESNU)
Destination airport:Umeå Airport (UME/ESNU)
Investigating agency: SHK Sweden
Narrative:
The purpose of the flight was to drop eight parachutists from flight level 130 (an altitude of 13,000 feet, approximately 4,000 metres). The load sheet that the pilot received did not contain any information about the individual weights of the parachutists or the total mass of the load. The pilot could thus not, with any help from the load sheet, check or make his own calculation of mass and balance before the flight.
The aeroplane was approaching the airport and, at 14:05 hrs, the pilot requested permission to drop the parachutists slightly higher because of clouds. The airspeed was decreasing in conjunction with the aeroplane’s approach to the airport.
Just over a kilometre from the airport where the jump point was located, the aeroplane suddenly changed direction to the left and began descending rapidly in almost the opposite direction. The aeroplane then travelled just under one kilometre at the same time as it descended 1,500 metres, which is a dive angle of over 45 degrees.
The aeroplane broke up in the air as both the airspeed and the g-forces exceeded the permitted values for the aeroplane. From an altitude of 2,000 metres, the aeroplane fell almost vertically with a descent velocity of around 60 m/s.
The fact that no one was able to get out and save themselves using their parachute was probably due to the g-forces and the rotations that occurred.
All those on board remained in the aeroplane and died immediately upon impact.
The pilot had limited experience of both normal flight and parachute operations.
The aeroplane was tail heavy and the centre of gravity moved in such a way that the aeroplane became unstable. The task of navigating to a precise point at high altitude at the same time as a number of actions were to be performed in accordance with a checklist resulted in a heavy workload. The large amount of clouds made safe flying more difficult or even impossible. The high altitude could also have reduced the pilot’s abilities as a result of hypoxia.
It is SHK’s understanding that the lack of formal training, absence of a system for determining the centre of gravity and lack of support for flight operations have been decisive factors in terms of how the flight developed into an accident.

Causes/contributing factors
The control of the aeroplane was probably lost due to low airspeed and that the aeroplane was unstable as a result of a tail-heavy aeroplane in combination with the weather conditions, and a heavy workload in relation to the knowledge and experience of the pilot.
Limited experience and knowledge of flying without visual references and changes to the centre of gravity in the aeroplane have probably led to it being impossible to regain control of the aeroplane.

The following factors are deemed to be probable causes of the accident:
- The lack of a safe system for risk analyses and operational support, including data for making decisions concerning flights, termination or replanning of commenced flights.
- The lack of a standardised practical and theoretical training programme with approval of a qualified instructor.
- The lack of a safe system for determining centre of gravity prior to and in conjunction with the parachuting jumps.


The aircraft was temporarily grounded by safety authorities in Australia, Europe, New Zealand and others on 19th July and 20th of July. This safety precaution was reversed on the 25th of July when preliminary investigations found no evidence of an unsafe condition.
The wings appears to have been exposed to aerodynamic loads beyond those for which the type design is certificated.

Sources:

https://www.havkom.se/utredningar/civil-luftfart/olycka-med-flygplanet-se-mes-av-typen-gibbsland-g8-airvan-naera-umea-flygplats-den-14-juli-2019
https://www.aftonbladet.se/nyheter/a/jdg96A/flygplan-har-kraschat-utanfor-umea--nio-personer-doda
https://www.mirror.co.uk/news/world-news/breaking-sweden-plane-crash-nine-18208716
https://fighterjetsworld.com/latest-news/aircraft-crash/9-dead-as-sweden-plane-carrying-skydivers-crashes-into-river/15588/
https://www.aftonbladet.se/nyheter/a/g7RPzJ/piloten-vinkade-till-sina-vanner--en-timme-senare-kraschade-de
http://publicapps.caa.co.uk/docs/33/EASAAD20190177E.pdf

Data __________________________

https://www.flickriver.com/photos/46191393@N08/27343742728/ (Photo)
https://sle-p.transportstyrelsen.se/extweb/en-gb/sokluftfartyg
https://www.flightradar24.com/data/aircraft/se-mes#2147aacd

http://publicapps.caa.co.uk/docs/33/EASAAD20190177CN.pdf


Accident investigation:
cover
  
Investigating agency: SHK Sweden
Status: Investigation completed
Duration: 1 year 1 month
Download report: Final report
Location

Media:


Images:


Photo: SHK

Revision history:

Date/timeContributorUpdates
14-Jul-2019 13:55 Captain Adam Added
14-Jul-2019 14:00 Captain Adam Updated [Aircraft type, Narrative]
14-Jul-2019 14:21 TB Updated [Time, Phase, Damage]
14-Jul-2019 14:22 Flygfantast Updated [Registration, Cn, Operator, Source, Damage]
14-Jul-2019 14:26 TB Updated [Time, Phase, Narrative]
14-Jul-2019 14:30 RobertMB Updated [Departure airport, Destination airport, Source]
14-Jul-2019 14:31 harro Updated [Time, Location, Phase, Source, Narrative]
14-Jul-2019 15:05 Captain Adam Updated [Narrative]
14-Jul-2019 15:37 Masen63 Updated [Narrative]
14-Jul-2019 15:41 harro Updated [Narrative]
14-Jul-2019 16:18 Anon. Updated [Narrative]
14-Jul-2019 16:38 Geno Updated [Phase, Source]
14-Jul-2019 16:50 Aerossurance Updated [Source, Embed code]
14-Jul-2019 17:49 Iceman 29 Updated [Embed code]
14-Jul-2019 17:59 Iceman 29 Updated [Source, Embed code, Narrative]
14-Jul-2019 18:01 Iceman 29 Updated [Embed code]
15-Jul-2019 11:49 Iceman 29 Updated [Source, Embed code, Narrative]
15-Jul-2019 14:25 Iceman 29 Updated [Narrative]
16-Jul-2019 06:14 Anon. Updated [Source]
16-Jul-2019 12:45 Anon. Updated [Narrative]
20-Jul-2019 08:25 Iceman 29 Updated [Source, Narrative]
10-Aug-2019 17:18 abre Updated [Country, Source, Narrative]
10-Aug-2019 17:20 harro Updated [Country, Narrative]
10-Sep-2020 12:15 harro Updated [Time, Phase, Narrative, Accident report, ]
10-Sep-2020 12:22 harro Updated [Photo, Accident report, ]
11-Sep-2020 07:39 harro Updated [Embed code, Accident report, ]

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