ASN Wikibase Occurrence # 137396
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| Date: | Tuesday 26 August 1958 |
| Time: | day |
| Type: |  Folland Gnat F Mk 1 |
| Owner/operator: | HävLLv 21 (Fighter Sqn 21) Finnish AF |
| Registration: | GN102 |
| MSN: | FL12 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Location: | Häme -
 Finland
|
| Phase: | Approach |
| Nature: | Military |
| Departure airport: | |
| Häme | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
Elevator control was lost just before landing. Destroyed in runway crash. The reason was a design flaw in the hydraulic system. The hydraulic reservoir had no valve which would prevent vessel under-pressurisation. This caused the reservoir to break and resulted under-pressure in hydraulic system. Landing gear had to be brought down with backup system.
When on final approach, elevator control was lost and the pilot tried to use manual control. Aircraft made a hard landing and hit the runway at 20 degree angle instead of normal 3. Landing gear collapsed and the plane turned upside down and caught fire. The pilot survived but was paralyzed. All Gnats were grounded for six months.
Sources:
1. http://web.archive.org/web/20121025182700/http://www.ejection-history.org.uk:80/Aircraft_by_Type/Folland_Gnat.htm
2. https://en.wikipedia.org/wiki/Folland_Gnat
3. http://www.elisanet.fi/~g621741/WWV/gnat/finland.htm
4. http://www.ab-ix.co.uk/pdfs/folland.pdf
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Jul-2011 11:52 | Dr.John Smith | Added |
| 30-Oct-2014 08:43 | Earl | Updated [Aircraft type, Operator, Narrative] |
| 23-Jun-2018 19:38 | Dr. John Smith | Updated [Time, Source] |
Corrections or additions? ... Edit this accident description
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