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AD/EC 225/1 - Main Rotor Blades - Heated
Eurocopter EC 225 Series HelicoptersEurocopter EC 225 Series Helicopters
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Eurocopter EC 225 Series Helicopters
| AD/EC 225/1 | Main Rotor Blades - Heated | 11/2008 DM |
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| Applicability: | EC 225 LP helicopters, all serial numbers, fitted with main rotor blades P/N332A11-0055-00 fitted with de-icer assemblies with individual serial numbers below 400 and that have not been repaired in accordance with Repair sheet CN 456 orCN 457. |
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| Requirement: | For Main Rotor Blades installed on helicopters:1. On affected main rotor blades, having logged less than 100 flying hours since they were delivered new or since they were repaired at the factory:Check the two neoprene layers, forming part of the de-icer assembly, for correct cohesion, in accordance with paragraphs 2.B.1, 2.B.2 and 2.B.3 of EurocopterEC 225 LP Alert service bulletin No. 01A002.2. On affected main rotor blades, having logged 100 flying hours or more since they were delivered new or since they were repaired at the factory:Check the two neoprene layers, forming part of the de-icer assembly, for correct cohesion, in accordance with paragraphs 2.B.1, 2.B.2 and 2.B.3 of EurocopterEC 225 LP Alert service bulletin No. 01A002.Results Interpretation- If there is no loss of cohesion over the thickness of the edge strip between the two neoprene layers, forming part of the de-icer, caulk the cut and return the helicopter to its initial condition in compliance with the instructions given in paragraphs 2.B.4 and 2.B.5 of Eurocopter EC 225 LP Alert service bulletin No. 01A002.- If there is a loss of cohesion from one adhesive face, over the thickness of the edge strip between the two neoprene layers, forming part of the de-icer, remove and replace the affected main rotor blade before the next flight.For Main Rotor Blades not installed on helicopters:Before installation on a helicopter, comply with the instructions given in paragraph 2 of Eurocopter EC 225 LP Alert service bulletin No. 01A002. |
| Note: DGAC AD F-2008-012 dated 30 July 2008 refers. | |
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| Compliance: | 1. Before further flight.2. By 30 September 2008. |
| This Airworthiness Directive becomes effective on 15 September 2008. | |
| Background: | This Airworthiness Directive is issued following a loss of cohesion between the two neoprene layers, forming part of the leading edge de-icer. This Directive requires a check of the de-icing strip for loss of cohesion which could cause the stainless steel protective strip of the de-icer to detach from the main rotor blade. |