Inflatable Life Raft
Inflatable Life Raft
Accidents and incidents involving the JAS 39 Gripen
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The Gripen at Farnborough Airshow 2006.
The JAS 39 Gripen is a 4.5 generation fighter aircraft manufactured by the Swedish aerospace company Saab.
This is a complete list of crashes as of June 2008. Apart from the other incidents documented, five Gripens have crashed, two of them before the delivery to the Swedish Air Force; one prototype, one production aircraft and three in service with the Swedish Air Force.
A sculpture in Stainless Steel by Thomas Qvarsebo, depicting a paper plane with a crumpled nose, has been placed on the spot of the 1993 crash.
February 1989
On 2 February 1989, the first prototype JAS 39-1 crashed on its sixth flight, when attempting to land in Link?ping. The accident was filmed in a now famous recording by a crew from Sveriges Television's Aktuellt. The pilot, Lars R?destr?m, remained in the tumbling aircraft, and escaped miraculously with just a fractured elbow and a few other minor injuries. The crash was the result of pilot-induced oscillation (PIO). Extremely gusty winds were also a contributing factor.
August 1993
On 8 August 1993, a production JAS 39A Gripen (serial number 39-102) crashed on the central Stockholm island of L?ngholmen, near the V?sterbron bridge, when the aircraft stalled after a slow speed manoeuver during a display over the Stockholm Water Festival. The crash was, like the first one, caused by PIO, and caught on film. The pilot R?destr?m again ejected from the aircraft, and landed safely by parachute, though he became stuck in a tree. The aircraft fell to the ground and caught fire on impact. Despite large crowds standing by watching, no one on the ground was seriously injured, and the fire was soon put out.
The aircraft had been delivered to the Swedish Defence Materiel Administration in June, only two months prior to the crash. The display flight was not classified as in-service, because it was being flown at a display by a test pilot, rather than a Swedish Air Force officer.
Crashes in service
The only in-service crashes so far have involved the Swedish Air Force.
Swedish Air Force
September 1999
On 20 September 1999, a JAS 39A Gripen (serial no 39-156) from Airwing F 7 S?ten?s crashed into Lake V?nern during a dogfight exercise. After passing through the wake vortex of the other aircraft, the aircraft abruptly changed course, and the pilot, Capt. Rickard Mattsson, got a highest-severity warning from the ground-collision warning system. He ejected from the aircraft, and landed safely by parachute in the lake, where his colleague observed him getting into the inflatable life raft. He was picked up by a rescue helicopter 27 minutes later.
The Swedish Accident Investigation Board (SHK) could not fully determine the cause of the crash until the black box was found some 15 months later. The preliminary report is available in English.
SHK's final report not available in English concluded that the plane had passed through the other aircraft's wake vortex while in a steep (?70 degrees) dive. When passing, the pilot's pitch command was "up", but instead the vortex inflicted a large aerodynamic transient on the aircraft, throwing it down into an almost vertical (?85 degrees) dive. These factors combined to create an angle of attack that was too large for the command to be obeyed, and so the ground-collision warning system alerted the pilot that a turn to avoid a crash would require more than 10 g. He then chose, in full accordance with the flight manual, to eject. At the same moment, however, the vortex effect ceased as suddenly as it had appeared, instantly reducing the angle of attack to within limits, and thus the plane was flyable again, and could in theory have been saved.
The flight status in the moment of ejection was: altitude 750 m, flight angle ?75 degrees, speed 350 km/h, angle of attack ?8 degrees, and load ?1.5 g.
June 2005
On 1 June 2005, a JAS 39A Gripen (serial no 39-184) from Airwing F 17 Kallinge, when acting as a target in a dogfight exercise, apparently ceased to obey commands from the pilot, LtCol Axel Nilsson. After attempting to regain control while the aircraft slowly descended, the pilot ejected from the aircraft and landed safely by parachute.
SHK's investigation report published in June 2007 showed that the aircraft initially travelled at Mach 0.6 in a shallow dive at an altitude of 5500 m. When attacked, the pilot, not fully aware...(and so on) To get More information , you can visit some products about Crew Neck Tee, Led Light Pipe, . The Compressed Natural Gas Bus products should be show more here!
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