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AD/AT 800/11 - Overturn Skid Plate
Airtractor 800 Series AeroplanesAirtractor 800 Series Aeroplanes
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Airtractor 800 Series Aeroplanes
| AD/AT 800/11 | Overturn Skid Plate | 8/2008 |
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| Applicability: | Air Tractor AT-802A with Serial Numbers -0003 through -0282. |
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| Requirement: | If overturn skid plate kit part number (P/N) 11411-1-500 or an FAA-approved equivalent P/N is already installed, then install P/N 11411-1-501 modification kit.If there is no overturn skid plate installed, then install overturn skid plate kitP/N 11411-1-502 or an FAA approved equivalent part number.Note: FAA AD 2008-11-17 and Snow Engineering Service Letter #97, revised7 November 2007 refers. |
| Compliance: | Within 180 days after the effective date of this AD. |
| This Airworthiness Directive becomes effective on 31 July 2008. | |
| Background: | The FAA received accident reports on Model AT-301 and AT-401 aircraft which indicate that the aircraft skids tail first during an overturn. As a result, the windshield and curved overturn tube act as a scoop, foreign material enters the cockpit if the canopy is damaged; and this foreign material then enters into the cabin area and possibly contributes to pilot deaths. The manufacturer installed an overturn skid plate which was intended to minimise the possibility of dirt or mud penetrating the cockpit during an overturn skid and causing pilot asphyxia or injury.There have subsequently been reports of the bolts that attach the forward end of the original design overturn skid plate breaking in an overturn accident. This allowed the skid plate to rotate around the rear attach point and the forward end of the plate to enter the cockpit area. This Airworthiness Directive is issued to ensure overturn skid plates are installed and, if already installed, prevent the front and rear connections of the overturn skid plate breaking. |
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David Villiers
Delegate of the Civil Aviation Safety Authority
13 June 2008