AD 68-26-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-6-1 | Airworthiness Directives; DE HAVILLAND Model DHC-6 Airplanes |
| aircraft | Viking Air Limited | DHC-6-100 | Airworthiness Directives; DE HAVILLAND Model DHC-6 Airplanes |
| aircraft | Viking Air Limited | DHC-6-200 | Airworthiness Directives; DE HAVILLAND Model DHC-6 Airplanes |
| aircraft | Viking Air Limited | DHC-6-300 | Airworthiness Directives; DE HAVILLAND Model DHC-6 Airplanes |
Unsafe Condition
Loose or missing jo-bolts in wing struts which have accumulated 150 or more hours time in service.
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Required Actions
Visually inspect the top and bottom of the right and left wing struts (P/N C6W1005-3, -4) for loose or missing jo-bolts within the next 50 hours time in service. Subsequent inspections must be conducted at intervals of 450 to 550, 2450 to 2550, and 7450 to 7550 hours after the initial inspection, followed by intervals not exceeding 5000 hours. Missing jo-bolts must be replaced prior to further flight, with a maximum of four missing in any strut replaced within 250 hours under specific spacing conditions.
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Compliance Time
Within the next 50 hours time in service
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Affected Aircraft
DE HAVILLAND Model DHC-6 Airplanes with wing struts P/N C6W1005-3, -4 that have accumulated 150 or more hours time in service as of December 20, 1968.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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