AD 2018-16-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Inc | Airworthiness Directives; Bell Helicopter Textron Inc., Helicopters |
| aircraft | Bell | Helicopter Textron Inc | Airworthiness Directives; Bell Helicopter Textron Inc., Helicopters |
Unsafe Condition
A crack on an EFS tube assembly could result in failure of the emergency floats to inflate during an emergency water landing.
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Required Actions
Within 300 hours time-in-service, remove the EFS tube assembly from service, lubricate the shoulder of the sleeves, threads, and seat of each mating fitting with anti-seize compound, and install an EFS tube assembly not listed in paragraph (a) of this AD. After the effective date of this AD, do not install an EFS tube assembly listed in paragraph (a) of this AD on any helicopter.
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Compliance Time
Within 300 hours time-in-service
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Affected Aircraft
Bell Helicopter Textron Inc. Model 212, Model 412, and Model 412EP helicopters, certificated in any category, with an emergency flotation system (EFS) tube assembly part number (P/N) 412-073-820-101 with a date of manufacture before July 28, 2016, or an unknown date of manufacture installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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