Airworthiness directives › 2018-14-03
AD 2018-14-03 Airworthiness Directives; Bombardier, Inc., Airplanes
Applicability*9
This AD applies to Bombardier, Inc., Model airplanes, certificated in any category, identified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD. (1) Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10002 and subsequent. (2) Model CL-600-2D15 (Regional Jet Series 705) airplanes and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 and subsequent. (3) Model CL-600-2E25 (Regional Jet Series 1000) airplanes, serial numbers 19001 and subsequent.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
For any MLG dressed shock strut assembly with part numbers and serial numbers specified in paragraph 1.A., “Effectivity,” of Bombardier Service Bulletin 670BA-32-060, Revision B, dated November 10, 2017, at the applicable compliance times specified in paragraphs (g)(1), (g)(2), or (g)(3) of this AD, do a detailed visual inspection of the retraction actuator brackets, their associated pins and hardware, and the mating lugs on the MLG outer cylinder for any corrosion, and do all applicable replacements, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 670BA-32-060, Revision B, dated November 10, 2017. Do all applicable replacements before further flight. (1) For any MLG dressed shock strut assembly that has accumulated less than 10,000 total flight hours on the MLG dressed shock strut assembly and has been in service for less than 60 months since its first installation on an airplane: Within 6,600 flight hours or 39 months, whichever occurs first, after the effective date of this AD. (2) For any MLG dressed shock strut assembly that has accumulated less than or equal to 14,000 total flight hours on the MLG dressed shock strut assembly, and has been in service for less than 84 months since its first installation on an airplane, and does not meet the criteria in paragraph (g)(1) of this AD: Within 4,400 flight hours or 26 months, whichever occurs first, after the effective date of this AD, but not to exceed 16,600 total flight hours on the MLG dressed shock strut assembly or 99 months since its first installation on an airplane, whichever occurs first. (3) For any MLG dressed shock strut assembly that has accumulated more than 14,000 total flight hours on the MLG dressed shock strut assembly or 84 months or more since its first installation on an airplane: Within 2,600 flight hours or 15 months, whichever occurs first, after the effective date of this AD.
Unsafe condition
This AD was prompted by reports indicating that corrosion was found on the main landing gear (MLG) retraction actuator brackets and their associated pins. We are issuing this AD to address undetected corrosion on the MLG retraction actuator brackets and their associated pins, which could lead to a MLG collapse.
Affected ADs
None.
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