AD/EC 225/3 - Main Rotor Blade De-Icing System Harness Connectors (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Eurocopter EC 225 Series Helicopters AD/EC 225/3 Main Rotor Blade De-Icing 11/2008 DM System Harness Connectors

Applicability: EC 225 LP helicopters, all serial numbers, equipped with main rotor blade de-icing harnesses part number 42994. Requirement: 1. Check for correct tightness the five main rotor blade de-icing harness connectors on the slip-ring assembly side, in accordance with the accomplishment instructions of the Eurocopter EC 225 LP Alert Service Bulletin (ASB) 05A006 dated 21 December 2006. 2. If not previously accomplished in accordance with European Aviation Safety Agency (EASA) Emergency Airworthiness Directive (EAD) 2007-0012-E for each of the five main rotor blade de-icing harness connectors on the slip-ring assembly side, check that the locking system operates correctly and fit the harness connectors with heat-shrinkable sleeves, as instructed in the accomplishment instructions of the ASB 05A006. 3. Check for correct tightness the five main rotor blade de-icing harness connectors on the slip-ring assembly side, in accordance with the accomplishment instructions of ASB 05A006. 4. Install a heat-shrinkable sleeve on the harness connector, in accordance with the accomplishment instructions of ASB 05A006. Later revisions of ASB 05A006, approved by the EASA, are acceptable for compliance with the relevant parts of this Directive. Note: EASA EAD 2007-0012-E refers. Compliance: For Requirement 1 - Before each flight from 29 August 2008 (the effective date of this Directive) until compliance with Requirement 2 is achieved. For Requirement 2 - Within the next 50 hours time in service (TIS) or 3 months, whichever occurs first, after 29 August 2008. For Requirement 3 - Within the next 85 hours TIS after initial compliance with Requirement 2 of this Directive or paragraph 2 of EASA EAD 2007-0012-E or the last compliance with paragraph 3 of EASA EAD 2007-0012-E and thereafter at intervals not to exceed 85 hours TIS.