AD 2005-03-13

You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.

Before the accumulation of 2,000 total flight hours, or within 550 flight hours after the effective date of this AD, whichever occurs later, do a detailed inspection for fractures and cracks of the links of the aileron PCU, in accordance with Part A of the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-27-130, Revision “B,” including Appendices A and B, dated May 11, 2004. Repeat the detailed inspection thereafter at intervals not to exceed 1,000 flight hours.

Note 1: For the purposes of this AD, a detailed inspection is “an intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required.”

If any fractured or cracked link is detected during any inspection required by paragraph (f) of this AD, before further flight, replace the fractured/cracked link and do the applicable related investigative and corrective actions by doing all the actions in accordance with Part B of the Accomplishment Instructions of Bombardier Alert Service Bulletin A601R-27-130, Revision “B,” including Appendices A and B, dated May 11, 2004; except as required by paragraph (h) of this AD.

(h) If any crack is found on the aileron lugs during any related investigative action required by paragraph (g) of this AD, and the service bulletin recommends contacting Bombardier for disposition: Before further flight, disposition and replace the cracked aileron lug in accordance with a method approved by the Manager, New York Aircraft Certification Office (ACO), FAA, or Transport Canada Civil Aviation (TCCA) (or its delegated agent).

(i) Actions specified in paragraphs (f) and (g) of this AD done before the effective date of this AD in accordance with Bombardier Alert Service Bulletin A601R-27-130, Revision “A,” including Appendices A and B, dated December 22, 2003; are acceptable for compliance with the corresponding requirements of paragraphs (f) and (g) of this AD.

(j) Accomplishment of the initial inspection of the links of the aileron PCU, and replacement if necessary, before the effective date of this AD in accordance with Bombardier Alert Service Bulletin A601R-27-130, including Appendices A and B, dated November 13, 2003, is acceptable for compliance with the corresponding requirements of paragraphs (f) and (g) of this AD; except as provided by paragraph (k) of this AD.

(k) Airplanes on which a fractured or cracked link of the aileron PCU was found that were not subject to an NDT inspection of the aileron lugs (i.e., related investigative action required by paragraph (h) of this AD) before the effective date of this AD must do an NDT inspection of the applicable lugs in accordance with paragraph (g) of this AD at the next repetitive detailed inspection of the link of the aileron PCU required by this AD.

Submit a report of the findings (both positive and negative) of the initial inspection required by paragraph (f) of this AD and any associated fractured or cracked link to Bombardier Aerospace Inc., c/o In-Service Engineering, 3rd floor, Dept. 508, 400 Cote Vertu Road West, Dorval, QC, Canada H4S 1Y9, at the applicable time specified in paragraph (l)(1) or (l)(2) of this AD. The report must be done in accordance with Appendices A and B of Bombardier Alert Service Bulletin A601R-27-130, Revision ‘B,’ dated May 11, 2004. Under the provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et seq.), the Office of Management and Budget (OMB) has approved the information collection requirements contained in this AD and has assigned OMB Control Number 2120-0056.

(1) If the inspection was done after the effective date of this AD: Submit the report and any fractured/cracked link within 30 days after the inspection.

(2) If the inspection was accomplished prior to the effective date of this AD: Submit the report and any fractured/cracked link within 30 days after the effective date of this AD.

Although the service bulletin referenced in this AD specifies to submit comment and compliance sheets to the manufacturer, this AD does not include that requirement.