Airworthiness directives › 2016-10-14
AD 2016-10-14 Airworthiness Directives; Bombardier, Inc. Airplanes
Applicability*9
This AD applies to Bombardier, Inc. Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, Model CL-600-2D15 (Regional Jet Series 705) airplanes, and Model CL-600-2D24 (Regional Jet Series 900) airplanes, certificated in any category, as identified in Bombardier Service Bulletin 670BA-57-024, dated July 23, 2014; except airplanes having manufacturer serial numbers 15272 and 15279.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 800 flight hours or 4 months after the effective date of this AD, whichever occurs first: Do a general visual inspection of the insulation blankets in the upper wing box area to determine whether any insulation blanket is missing in specified areas, in accordance with Part A of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-57-024, dated July 23, 2014. For airplanes on which Bombardier Service Bulletin 670BA-36-016 has been done: A review of airplane maintenance records is acceptable in lieu of this inspection if it can be conclusively determined from that review that the insulation blanket has been reinstalled after incorporation of Bombardier Service Bulletin 670BA-36-016. (1) If no insulation blanket is missing, no further action is required by this AD. (2) If any insulation blanket is missing, within 1,200 flight hours or 6 months after the effective date of this AD, whichever occurs first, replace the missing insulation blankets, in accordance with Part B of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-57-024, dated July 23, 2014; except, where Bombardier Service Bulletin 670BA-57-024, dated July 23, 2014, specifies contacting Bombardier for “an approved disposition to complete this service bulletin,” this AD requires corrective action to be done using a method approved by the Manager, New York Aircraft Certification Office (ACO), ANE-170, FAA; or Transport Canada Civil Aviation (TCCA); or Bombardier, Inc.'s TCCA Design Approval Organization (DAO).
Unsafe condition
This AD was prompted by a report indicating that some operators have inadvertently removed the existing insulation blankets from the upper wing box area. We are issuing this AD to detect and replace missing insulation blankets from the upper wing box area, which could result in inadequate thermal protection to prevent fuel ignition in the event of an undetected bleed-air leak due to a cracked or ruptured bleed-air duct.
Affected ADs
None.
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