AD 58-10-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
Unsafe Condition
Fracturing of the cranked operating lever (P/N N.69195) due to excessive case-hardening of the mild steel lever, resulting in brittleness.
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Required Actions
Replace the hardened mild steel lever (P/N N.69195) with a mild steel lever (P/N N.69195/1) identified by a blue spot on the crank. Follow Vickers-Armstrong Aircraft Ltd. PTL No. 188 and Modification Bulletin No. D.2673.
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Compliance Time
as soon as possible but not later than July 31, 1958
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 700 Series Aircraft, including Viscount 744 and Viscount 745D models.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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