AD 70-07-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron Canada Limited | 206A | Airworthiness Directives; BELL Model 206A Helicopters |
Unsafe Condition
The Planetary Gear Support Spider, P/N 206-040-041-1, may fail due to fatigue cracking after accumulating 500 hours' time in service, leading to transmission failure and possible loss of helicopter control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace Planetary Gear Support Spiders P/N 206-040-041-1 with redesigned P/N 206-040-080-3 and new shafts P/N 206-040-043-5, or use serviceable P/N 206-040-041-1 with less than 450 hours' time in service. Remove and replace as specified based on time in service prior to exceeding thresholds.
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Compliance Time
Prior to accumulating 500 hours' time in service or within 50 hours' time in service after the effective date (May 1, 1970), depending on the existing time in service on the effective date.
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Affected Aircraft
Bell Helicopter Textron Canada Limited Model 206A helicopters with transmissions incorporating Planetary Gear Support Spider P/N 206-040-041-1.
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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