AD 96-18-22
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Robinson Helicopter Company | R44 | Airworthiness Directives; Robinson Helicopter Company Model R44 Helicopters |
Unsafe Condition
Loosening of the bolts securing the gear to the gear carrier, leading to fatigue failure of the gear carrier within the gearbox and subsequent loss of power to the main rotor.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Drain oil from the gearbox, remove the gearbox from the helicopter, inspect mating surfaces for pitting, elongated bolt holes, or machining grooves, replace the gearbox if defects are found, replace the 18 bolts and washers with NAS6606-5 bolts and spacers (P/N C130-29).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
before further flight
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Robinson Helicopter Company Model R44 helicopters with main rotor gearbox P/N C006-1, Revisions A through P installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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