Airworthiness Directive · Amendment 39-17387 · Emergency flotation section
Robinson Helicopter Company Helicopters
This AD applies to Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters with emergency floats equipped with an inflation valve assembly, part number (P/N) D757-1, not engraved with “D758-4” or modified with modification B900-8, and containing a housing assembly, P/N D758-1, Revision C or prior, certificated in any category.
We are adopting a new airworthiness directive (AD) for Robinson Helicopter Company (Robinson) Model R44 and R44 II helicopters equipped with emergency floats. This AD requires replacing the inflation valve assembly. This AD was prompted by the failure of the emergency floats to deploy during a factory test because a needle was binding within the inflation valve assembly. The actions are intended to prevent the failure of the floats to inflate during an emergency landing.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Within 1 year or 500 hours time-in-service (TIS), whichever occurs first, replace the inflation valve assembly with an airworthy inflation valve assembly, P/N D757-1R.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
