Airworthiness Directive · Amendment 39-15377 · Frame
Eurocopter Deutschland Model EC135 Helicopters
This AD applies to Model EC135 helicopters, serial number 0005 up to and including 0576, certificated in any category.
We are adopting a new airworthiness directive (AD) for Eurocopter Deutschland (Eurocopter) Model EC135 helicopters. This AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The European Aviation Safety Agency (EASA), the Technical Agent for the Federal Republic of Germany, with which we have a bilateral agreement, states in the MCAI:
Within 25 hours time-in-service (TIS), unless already done, do the following:
(1) Inspect the wiring harnesses for chafing and wear in the areas shown in Figure 1 of Eurocopter Alert Service Bulletin EC135-53A-017, Revision 1, dated June 22, 2007 (ASB).
(i) If chafing or wear is found on the wiring harness, before further flight, replace the wiring harness with an airworthy wiring harness.
(ii) If no chafing or wear is found, modify the side channel covers by affixing double-sided adhesive tape in the area depicted in Figure 2 of the ASB by following the Accomplishment Instructions, paragraph C, of the ASB.
(2) Modify the attachment of the copilot collective lever cover as depicted in Figure 3 of the ASB by following the Accomplishment Instructions, paragraph D, of the ASB.
(3) Attach chafing protection to the wiring harnesses and replace affected screws as depicted in and in accordance with Figure 4 of the ASB and by following the Accomplishment Instructions, paragraphs E and F, of the ASB. Paragraph F(2) of the ASB applies only to helicopters with a copilot collective lever cover.
This AD differs from the MCAI as follows:
(1) We do not require contacting the manufacturer for further instructions if a wiring harness is damaged but require that you replace a damaged wiring harness with an airworthy wiring harness.
(2) We do not require a February 28, 2007, compliance time because that date has passed.
(3) We have used the helicopter S/N 0005 up to and including S/N 0576 as stated in the service information rather than the helicopter S/N 0005 up to and including 0654 as stated in the MCAI.
(4) We refer to the compliance time as “hours TIS” rather than “flight hours.”
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
