AD 65-23-01
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
Cracks in the inner and outer wing spar attachment joint lugs, originating in the taper holes and progressing parallel to the joint lug, may occur on any finger of the joint lugs.
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Required Actions
Inspect for cracks using ultrasonic methods or FAA-approved equivalent on all outer and inner wing spar boom attachment joint lugs. Replace lower spar booms with new ones before further flight if cracks are found. For top spar boom joints with permissible cracks, repeat inspections at specified intervals. Repetitive inspections and torque loading checks must be performed at intervals based on airplane type and spar boom configuration.
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Compliance Time
within the next 20 hours' time in service after the effective date of this AD
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount Models 744, 745D, and 810 Series Airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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