AD 58-10-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS 700 Series Aircraft |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS 700 Series Aircraft |
Unsafe Condition
Circumferential cracks have occurred in the main oleo cylinder (P/N 74450-3) at the radius where the cylinder intersects with the 30-degree taper and 2-3/8 inches above the torsion link lugs, either side of the fore and aft center line.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect oleos for cracks around the cylinder circumference every 200 landings after reaching 1,000 flying hours. Use dye penetrant or approved equivalent if cracks are suspected. Replace cylinder if cracks exceed specified limits (total 3 inches or individual 1.5 inches) or depth exceeds 0.050 inch. Blending and shotpeening may allow continued service under specific inspection intervals.
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Compliance Time
Compliance required as indicated.
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 700 Series Aircraft equipped with 14-inch stroke landing gear oleos.
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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