Robinson R44 Helicopters - Electrical Power System - Ameri-King Radio Frequency Interference Direct Current Line Filter Smoke/Fire
- Published
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Owners and operators of Robinson R44 and R44 II helicopters with the affected Ameri-King AK-950-FTR RFI DC line filter should follow Robinson Service Bulletin SB-105 dated August 21, 2020, to replace the unapproved part with an FAA-approved alternative. Although compliance is not mandatory, it is strongly recommended to mitigate the risk of smoke or fire. For further assistance, contact the FAA aerospace engineer or Robinson Helicopter Company as provided.
Summary
The Special Airworthiness Information Bulletin SAIB: AIR-21-03 is an FAA informational bulletin regarding Robinson R44 and R44 II helicopters equipped with Automatic Direction Finding (ADF) equipment and police-version helicopters. It addresses the potential risk of smoke and fire caused by the Ameri-King Radio Frequency Interference (RFI) Direct Current (DC) Line Filter, part number AK-950-FTR, installed in these helicopters. The bulletin informs operators about this issue without mandating regulatory action.
What changed
This bulletin introduces awareness of a fire hazard linked to the Ameri-King AK-950-FTR RFI DC line filter installed on certain Robinson R44 and R44 II helicopters. It highlights that this part is unapproved and references Robinson Service Bulletin SB-105, which recommends replacing the filter with an FAA-approved equivalent. No new regulatory mandates or airworthiness directives are issued at this time.
Why it matters
This information is critical for aviation professionals to prevent potential in-flight fire hazards associated with unapproved electrical components. Operators and maintenance personnel must be aware of the risk to ensure aircraft safety and compliance with FAA guidance. Addressing this issue proactively helps avoid emergency situations and supports continued airworthiness of affected Robinson helicopters.
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