EASA AD CF-2020-35: Flight Controls – Roll Control Input-Modules (RCIMs) Incorrect Installation | RegNotify

Airworthiness DirectiveSupersededEASA AD CF-2020-35

Flight Controls – Roll Control Input-Modules (RCIMs) Incorrect Installation

Superseded. A newer version replaces this document.

Published: Oct 9, 2020
Effective: Oct 21, 2020
Deadline: Oct 31, 2020

Bombardier BD-700 1A10

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

What to do

Operators and maintenance organizations must comply with the updated AMM procedures for RCIM installation, adjustment, and functional testing within 10 days of the directive's effective date, 21 October 2020. Maintenance involving RCIMs must use AMM tasks dated 21 February 2020 or later to confirm correct installation and function.

Summary

Canadian Airworthiness Directive CF-2020-35 addresses incorrect installation of Roll Control Input-Modules (RCIMs) on Bombardier BD-700-1A10 and BD-700-1A11 aircraft, specifically serial numbers 9002 through 9998, 60005 through 60007, 60013, and 60015 through 60019. The directive mandates updated maintenance procedures to ensure proper RCIM orientation and function, preventing potential loss of aircraft control due to misrigged multi-function spoilers.

What changed

This Airworthiness Directive introduces revised Aircraft Maintenance Manual (AMM) tasks with enhanced guidance for installation, adjustment, and functional testing of RCIMs. It requires maintenance personnel to use AMM tasks issued on or after 21 February 2020 to prevent incorrect RCIM installation and misrigging conditions.

Why it matters

Incorrect installation of RCIMs can cause multi-function spoilers to deploy opposite to roll commands, risking loss of control of the aircraft. Compliance with this directive ensures safer maintenance practices, reducing the likelihood of critical flight control malfunctions and enhancing overall flight safety for affected Bombardier aircraft.

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