Airworthiness Directive · Amendment 39-22021 · Ice and rain protection
Bombardier, Inc., Airplanes
This AD applies to Bombardier, Inc., airplanes certificated in any category, identified in paragraphs (c)(1) through (3) of this AD and equipped with any Cox & Co. 3043 or 3044 series (potable water-line) ribbon heater.
(1) Model CL-600-1A11 (600) airplanes.
(2) Model CL-600-2A12 (601) airplanes.
(3) Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes.
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This AD was prompted by a report of smoke in the aft cabin during a maintenance activity, which an investigation determined was caused by a faulty drain line ribbon heater. This AD requires a general visual inspection of all affected potable water-line ribbon heater installations and corrective actions and other specified actions. The FAA is issuing this AD to address the unsafe condition on these products.
For airplanes with a serial number listed in Section 1.A of the applicable service information specified in figure 1 to paragraph (g) of this AD: Within 6 years after the effective date of this AD, do an inspection of the potable water-line ribbon heater installation and insulation to detect any discrepancy, and, before further flight, do all applicable corrective actions and other specified actions in accordance with the Accomplishment Instructions of the service information specified in figure 1 to paragraph (g) of this AD, as applicable.
For airplanes with a serial number that is not listed in section 1.A of the service information specified in figure 1 to paragraph (g) of this AD, and for Bombardier Model CL-600-1A11 airplanes: Within 6 years after the effective date of this AD, do applicable actions including an inspection for discrepancies of the potable water-line ribbon heater and repair of any discrepant potable water-line ribbon heaters using a method approved in accordance with the procedures specified in paragraph (i)(2) of this AD.
