Airworthiness directives › 2017-20-11
AD 2017-20-11 Airworthiness Directives; Bombardier, Inc., Airplanes
Models named: CL-600-2A12. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bombardier, Inc., Model CL-600-1A11 (CL-600) airplanes, serial numbers 1004 through 1085 inclusive; Model CL-600-2A12 airplanes (CL-601 Variant), serial numbers 3001 through 3066 inclusive; and Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes, serial numbers 5001 through 5194 inclusive; certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 30 days after the effective date of this AD, revise the maintenance or inspection program, as applicable, to incorporate the certification maintenance requirement (CMR) task specified in the applicable service information identified in paragraphs (g)(1) through (g)(3) of this AD. The initial compliance time for the task is within the applicable time specified in the service information, or within 30 days after the effective date of this AD, whichever occurs later. (1) For Model CL-600-1A11 (CL-600) airplanes: Task 53-10-00-131, “Pressure Floor—Wing Tie Beam—FS460.00,” of Section 5-10-30, “Airworthiness Limitation Checks by ATA Chapter Number,” of Bombardier Challenger 600 Time Limits/Maintenance Checks, Publication No. PSP 605, Revision 37, dated April 29, 2016. (2) For Model CL-600-2A12 airplanes (CL-601 Variant) airplanes: Task 53-10-00-133, “Pressure Floor—Wing Tie Beam—FS460.00,” of Section 5-10-30, “Airworthiness Limitation Checks by ATA Chapter Number,” of Bombardier Challenger 601 Time Limits/Maintenance Checks, Publication No. PSP 601-5, Revision 44, dated April 29, 2016. (3) For Model CL-600-2B16 (CL-601-3A and CL-601-3R Variants) airplanes: Task 53-10-00-134, “Pressure Floor—Wing Tie Beam—FS460.00,” of Section 5-10-30, “Airworthiness Limitation Checks by ATA Chapter Number,” of Bombardier Challenger 601 Time Limits/Maintenance Checks, Publication No. PSP 601A-5, Revision 40, dated April 29, 2016.
Unsafe condition
This AD was prompted by a report of laminated shims that may have been improperly installed at a certain wing tie beam. We are issuing this AD to detect and correct degradation of the structural integrity of the affected tie beam, which could result in cracking of the pressure floor.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1