EASA SIB SAIB-2022-21
Emergency Flotation Section, Pop-Out Float Underinflation
Summary
The Special Airworthiness Information Bulletin SAIB 2022-21 is an FAA informational bulletin addressing under-inflation issues in the pop-out floats of Robinson Helicopter Company Model R44 and R44 II helicopters. It highlights a problem where improper packing and hose misalignment can cause one float to under-inflate during water landings, potentially compromising buoyancy. This bulletin does not impose mandatory actions but provides guidance to prevent this issue.
What Changed
SAIB 2022-21 introduces awareness of a specific under-inflation problem caused by a kinked hose in the D674-2 pop-out float inflation hose assembly on RHC R44 and R44 II helicopters. It updates the recommended maintenance procedures by including instructions to ensure proper hose alignment and minimize preload during float packing. This bulletin does not mandate regulatory changes but updates maintenance recommendations.
Why It Matters
This information is critical for operators, maintenance technicians, and repair facilities to prevent potential loss of buoyancy on one side of the helicopter during water landings, which could lead to capsizing. Proper hose alignment ensures reliable float inflation and enhances safety during emergency water landings. Awareness and adherence to updated procedures help maintain airworthiness and operational safety without triggering mandatory directives.
What To Do
Owners, operators, and maintenance personnel should verify and ensure correct hose alignment before deflating and packing the pop-out floats on Robinson R44 and R44 II helicopters. They should follow the updated Pop-out Float Installation procedure in the Robinson Model R44 Maintenance Manual that includes minimizing hose preload. No specific compliance deadline is provided, but adherence is recommended to prevent under-inflation issues.