Airworthiness Directive · Amendment 39-12853 · Bombardier Model CL-600-2B19 Series Airplanes
Bombardier Model CL-600-2B19 Series Airplanes
Model CL-600-2B19 series airplanes, serial numbers 7003 through 7495 inclusive, 7497 through 7502 inclusive, and 7505 through 7507 inclusive; certificated in any category.
This amendment adopts a new airworthiness directive (AD) that is applicable to certain Bombardier Model CL-600-2B19 series airplanes. This AD requires inspection of certain installed electrical relays to determine whether they have certain manufacturing date codes, and replacement of the electrical relays with those date codes with new relays with different manufacturing date codes. This action is necessary to prevent the failure of an electrical relay due to a defective moving blade assembly, which could result in the inability to generate electrical power from the emergency system, if needed. This action is intended to address the identified unsafe condition.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
