AD 69-12-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron Canada Limited | 206A | Airworthiness Directives; Bell Model 206A Helicopters |
Unsafe Condition
Failure of the magnesium tail boom due to fatigue cracks in the skin adjacent to rivet holes in specific areas.
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Required Actions
Inspect the tail boom skin adjacent to rivet holes for cracks using a three-power or higher magnifying glass before first flight daily and every 25 hours' time in service. Repair cracks by stop drilling and deburring, or replace tail booms with any other cracks. Replace tail booms with 400+ hours' time in service within 100 hours, and those with less than 400 hours before 500 hours. Subsequent replacements must be done before 500 hours' time in service.
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Compliance Time
Before further flight and within specified intervals: initial compliance by first flight after effective date, subsequent inspections every 25 hours' time in service, replacement requirements based on time in service as detailed.
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Affected Aircraft
Bell Helicopter Textron Canada Limited Model 206A helicopters, serial numbers 4 through 153, equipped with magnesium tail boom assembly, Part No. 206-031-004-1 or -3.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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