AD 83-02-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Viking Air Limited | DHC-3 | Airworthiness Directives; DeHavilland Model DHC-3 (Military U-IA) Series Airplanes |
Unsafe Condition
Corrosive deterioration of the wing strut to fuselage attachment structure due to internal corrosion in the wing strut tie-bar and corrosion in tie-bar lugs.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect wing strut tie-bar for internal corrosion per Service Bulletin S/B No. 3/37 Rev. 'A'. If corrosion found, remove corrosion, check depth, inspect for cracks using dye penetrant. Replace tie-bar if corrosion exceeds limits or cracks exist. Inspect tie-bar lugs for corrosion per Service Bulletin; remove corrosion, check thickness, inspect for cracks. Replace tie-bar if lugs are below minimum thickness or have cracks. Compliance intervals: within 30 days after effective date (if not done in last 11 months), then every 12 months.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after the effective date of this AD unless already accomplished in the last 11 months, and at intervals not to exceed each 12 months thereafter, unless already accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
DeHavilland Model DHC-3 (Military U-IA) airplanes certificated in any category.
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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