Agency DecisionEASA AD CF-2018-33R1

NOT ADOPTED - EASA DECISION ATTACHED

Published: Nov 19, 2020
Effective: Nov 26, 2020
Deadline: Dec 26, 2019
Replaces: CF-2018-33

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators of affected MHI RJ Aviation ULC CL-600 aeroplanes should ensure compliance with FAA AD 2020-10-05 for FMC-4200 installations with Rockwell Collins Part Numbers 822-0783-039 and 822-0783-040. The compliance deadline for the original Transport Canada AD CF-2018-33 was 26 December 2019, by which time all affected aircraft under EU regulations should have applied the Airplane Flight Manual amendment. No further action is required regarding Transport Canada AD CF-2018-33R1.

Summary

The document titled NOT ADOPTED - EASA DECISION ATTACHED is an official decision by the European Union Aviation Safety Agency (EASA) not to adopt Transport Canada Civil Aviation Airworthiness Directive CF-2018-33R1. This directive concerns certain MHI RJ Aviation ULC (formerly Bombardier Inc.) CL-600 aeroplanes and involves navigation system limitations and Flight Management Computer software updates. EASA clarifies that the previously adopted FAA AD 2020-10-05, which applies to FMC-4200 units with specific Rockwell Collins Part Numbers, remains the applicable standard.

What changed

EASA decided not to adopt the revised Transport Canada AD CF-2018-33R1, which prohibits using FAA AD 2020-10-05 for FMC installations on affected CL-600 aeroplanes. Instead, EASA maintains that FAA AD 2020-10-05, addressing equipment-level upgrades for FMC-4200 units with Rockwell Collins Part Numbers 822-0783-039 and 822-0783-040, is the relevant directive. The Transport Canada AD CF-2018-33R1 was intended to revise earlier requirements but was not accepted by EASA.

Why it matters

This decision impacts operators and maintenance organizations by clarifying that the FAA AD 2020-10-05 remains the governing directive for Flight Management Computer upgrades on affected CL-600 aircraft. It avoids conflicting compliance requirements and ensures consistency in continued airworthiness actions. Compliance teams can rely on the FAA AD for equipment-level modifications rather than temporary aircraft-level measures.

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