EASA AD CF-2020-12
Fire Protection — Fire Detection — Fire Detection and Extinguishing (FIREX) Control Unit Replacement
Summary
The Canadian Airworthiness Directive CF-2020-12 mandates the replacement of the Fire Detection and Extinguishing (FIREX) control unit part number 474112-2 on Bombardier BD-100-1A10 aircraft, serial numbers 20003 through 20669. This directive addresses fire protection system reliability by targeting a specific control unit susceptible to internal electrical noise. The directive applies to aircraft equipped with the affected FIREX control unit.
What Changed
CF-2020-12 introduces a new requirement to remove and replace the FIREX control unit P/N 474112-2 within 24 months of the directive's effective date. It also prohibits the installation of this specific control unit on the affected Bombardier BD-100-1A10 aircraft from the effective date onward. This is a new regulation responding to identified failures of the control unit.
Why It Matters
This directive is critical for aviation professionals because failure of the FIREX control unit can lead to loss of fire detection capability, posing a significant safety risk. Operators and maintenance organizations must ensure compliance to maintain airworthiness and safety standards. Compliance teams need to track and verify replacement actions to meet regulatory requirements and avoid grounding of aircraft.
What To Do
Operators of Bombardier BD-100-1A10 aircraft with serial numbers 20003 through 20669 must remove and replace the FIREX control unit P/N 474112-2 within 24 months from May 1, 2020, following the specified Bombardier service bulletins. Additionally, installation of the affected control unit is prohibited from the effective date. Maintenance personnel should refer to the applicable service bulletins for detailed replacement instructions.
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