AD 68-03-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Models 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Models 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; VICKERS Models 744, 745D, and 810 Series Airplanes |
Unsafe Condition
Cracking of the upper and lower torsion link hinge pins of the nose landing gear.
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Required Actions
Inspect pre Modification D.3045 (700 Series) and FG.1861 (800 Series) hinge pins for cracks using Magnaflux examination or an equivalent approved method, in accordance with specified British Aircraft Corporation (BAC) Preliminary Technical Leaflets. Replace cracked pins with serviceable pins of the same part number or with Modification D.3045/FG.1861 pins before further flight.
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Compliance Time
Compliance required as indicated, unless already accomplished. Specific compliance timelines depend on landing counts as of March 7, 1968: inspections must be done before reaching specified landing milestones (e.g., 5,000; 10,000 landings) and at intervals not exceeding 1,000 or 500 landings thereafter, depending on initial landing count.
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount Models 744, 745D, and 810 Series airplanes with pre Modification D.3045 (700 Series) and FG.1861 (800 Series) nose landing gear hinge pins.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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