Recording System — Cockpit Voice Recorder (CVR) and Flight Data Recorder (FDR) power supply modification
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Bombardier BD-100-1A10 aircraft must complete the power supply modification for the CVR and FDR within 48 months from the effective date of 10 January 2019. The modification must follow the instructions in the specified Bombardier Service Bulletins or approved later revisions. Stakeholders should coordinate with Transport Canada and authorized maintenance providers to ensure timely compliance.
Summary
The Canadian Airworthiness Directive CF-2018-37 mandates a modification to the power supply systems of the Cockpit Voice Recorder (CVR) and Flight Data Recorder (FDR) on Bombardier Inc. model BD-100-1A10 aircraft, specifically serial numbers 20003 through 20739. This directive addresses a safety concern identified in these Challenger 300 and Challenger 350 aeroplanes. The modification ensures continued operation of these critical recording systems by improving their power source reliability.
What changed
CF-2018-37 introduces a requirement to modify the power sources for the CVR and FDR to prevent simultaneous failure caused by a single power supply issue. This is a new regulation that mandates compliance with Bombardier Service Bulletins SB 100-31-09 for Challenger 300 and SB 350-31-004 for Challenger 350 aircraft, or later approved revisions.
Why it matters
This directive is crucial for aviation professionals because it enhances flight safety by ensuring that both the CVR and FDR remain operational even if one power supply fails. Operators, maintenance organizations, and compliance teams must address this to meet regulatory requirements and maintain aircraft airworthiness. Failure to comply could result in regulatory penalties and compromised accident investigation capabilities.
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