Airworthiness Directive · Amendment 39-19412 · Flight controls
Bombardier, Inc., Airplanes
This AD applies to the airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category.
(1) Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702) airplanes, serial numbers 10002 through 10337 inclusive.
(2) Bombardier, Inc., Model CL-600-2D15 (Regional Jet Series 705) airplanes and Model CL-600-2D24 (Regional Jet Series 900) airplanes, serial numbers 15001 through 15298 inclusive.
We are superseding Airworthiness Directive (AD) 2015-17-04, which applied to certain Bombardier, Inc., Model CL-600-2C10 (Regional Jet Series 700, 701, & 702), Model CL-600-2D15 (Regional Jet Series 705), and Model CL-600-2D24 (Regional Jet Series 900) airplanes. AD 2015-17-04 required replacement of left and right fixed control rods and lever assemblies of the elevator control system. This AD adds a detailed visual inspection of the key washers and self-locking nuts of the elevator control linkages and corrective actions if necessary. This AD was prompted by reports of a disconnect between the elevator lever and control rod and a report indicating that certain revisions of the service information were missing instructions for proper installation of certain key washers. We are issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (g) of AD 2015-17-04, with revised service information. Within 9,200 flight hours or 5 years, whichever occurs first, after September 24, 2015 (the effective date of AD 2015-17-04): Replace the left and right fixed control rods and lever assemblies of the elevator control system with newly designed control rods and lever assemblies, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 670BA-27-062, Revision C, dated February 13, 2015; or Part A of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-27-062, Revision E, dated June 8, 2017. After the effective date of this AD, only Part A of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-27-062, Revision E, dated June 8, 2017, may be used.
Within 8,800 flight hours after the effective date of this AD, do a detailed visual inspection of the key washers and self-locking nuts of the elevator control linkages, and do all applicable corrective actions, in accordance with Part B of the Accomplishment Instructions of Bombardier Service Bulletin 670BA-27-062, Revision E, dated June 8, 2017. Do all applicable corrective actions before further flight.
