AD 70-12-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 340 | Airworthiness Directives; GENERAL DYNAMICS Model 340 and 440 Airplanes |
| aircraft | Kelowna Flightcraft R & D Ltd. | 440 | Airworthiness Directives; GENERAL DYNAMICS Model 340 and 440 Airplanes |
Unsafe Condition
Cracks in the MLG trunnion fitting P/N 340-8510109 in the outboard fitting face and inboard boss area, primarily in the upper area above the boss radius, could lead to fitting failure.
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Required Actions
Visually inspect MLG trunnion fittings using dye penetrant inspection per General Dynamics Service Bulletin 57-4 or equivalent. Repeat inspections at intervals not exceeding 500 hours' time in service if no cracks found. Replace or stop-drill fittings based on crack length: replace if over two inches, stop-drill and daily reinspect if 1-2 inches, stop-drill and reinspect every 50 hours if one inch or less. Replace stop-drilled fittings within 500 hours' time in service. Prevent further flight if cracks exceed limits.
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Compliance Time
Within the next 50 hours' time in service after the effective date of this AD, unless already accomplished within the last 450 hours' time in service
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Affected Aircraft
General Dynamics Model 340 and 440 airplanes including those modified to turbopropeller power
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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