Airworthiness Directive · Amendment 39-18797 · Landing gear
Bombardier, Inc. Airplanes
This AD applies to Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes, certificated in any category, serial numbers 7003 and subsequent.
We are superseding Airworthiness Directive (AD) 2014-23-06 for certain Bombardier, Inc. Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. AD 2014-23-06 required modifying the main landing gear (MLG) by installing a new bracket on the left and right lower aft-wing planks. This new AD requires modification of the MLG with an improved design. This AD was prompted by a report indicating that inboard and outboard hydraulic lines of the brakes were found connected to the incorrect ports on the swivel assembly of the MLG. We are issuing this AD to address the unsafe condition on these products.
(1) For airplanes on which Bombardier Service Bulletin 601R-32-110, dated December 19, 2013, has been incorporated: Within 6,600 flight hours or 37 months after the effective date of this AD, whichever occurs first, modify the MLG, in accordance with Part B of the Accomplishment Instructions of Bombardier Service Bulletin 601R-32-110, Revision C, dated May 4, 2016.
(2) For airplanes on which Bombardier Service Bulletin 601R-32-110, dated December 19, 2013, has not been incorporated: Within 4,400 flight hours or 24 months after the effective date of this AD, whichever occurs first, modify the MLG, in accordance with Part A of the Accomplishment Instructions of Bombardier Service Bulletin 601R-32-110, Revision C, dated May 4, 2016.
