Reliable
Engine - The Raven's dependable Lycoming O-540 engine (Raven
I) and IO-540 engine (Raven II) are derated for long life and unmatched
reliability
Patented Rotor Design - Robinson's patented tri-hinge
rotor eliminates lag hinges, dampers, and hydraulic struts. Stainless
steel main rotor blades resist corrosion and have thick leading
edges to minimize erosion.
Inspections -
No scheduled maintenance, other than oil changes, required between
100-hour inspections.
Lubrication - Teflon-lined, elastomeric, and sealed bearings eliminate
most lubrication requirements.
Couplings -
Maintenance-free flexible couplings are used in place of universal
joints or gear couplings in the main and tail drive systems.
Controls - Primary controls are actuated by maintenance-free bellcranks and
push-pull tubes, eliminating the need for control cables and pulleys.
Time-Between-Overhaul -
2200 hours or twelve years approved time-between-overhaul period
for the R44 engine and airframe. All life-limited components have
approved service lives of at least 2200 hours.
Worldwide
Service - Factory-trained technicians at more than 280 service
centers throughout the world use certified Robinson parts and tools
to provide quality service for R44 helicopters.