[Final Rule] Communications - Headset Amplifier and Microphone Interface Circuit Card Assemblies - Removal
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must disconnect and remove the specified headset amplifier and microphone interface circuit card assemblies before further flight. The AD became effective on June 11, 2020, and compliance is required immediately for all affected aircraft not previously addressed under the emergency AD issued on February 14, 2020. Operators should refer to Cirrus Alert Service Bulletin SBA5X-23-03 for detailed instructions and submit any comments to the FAA by July 27, 2020.
Summary
The Final Rule titled 'Communications - Headset Amplifier and Microphone Interface Circuit Card Assemblies - Removal' is an FAA Airworthiness Directive (AD 2020-03-50) affecting Cirrus Design Corporation Model SF-50 airplanes, serial numbers 0005 through 0176 and 0178. This AD addresses a safety issue related to the headset amplifier and microphone interface circuit card assemblies used with the 3.5 mm audio and microphone jacks. It mandates their removal to prevent electrical shorts that could cause an uncontained cabin fire.
What changed
This new AD requires disconnecting and removing the headset amplifier (P/N 38849-001) and microphone interface (P/N 35809-001) circuit card assemblies from the affected Cirrus SF-50 airplanes. It formalizes the emergency AD issued earlier in February 2020 and makes the requirements effective for all operators. The AD incorporates by reference Cirrus Alert Service Bulletin SBA5X-23-03, which provides detailed removal instructions.
Why it matters
This AD is critical for aviation professionals because it addresses a serious safety hazard that could lead to cabin fires during ground operations, posing risks of occupant injury or loss of airplane control. Operators and maintenance organizations must comply promptly to mitigate this risk and ensure continued airworthiness. Compliance with this AD helps maintain regulatory compliance and operational safety standards.
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