AD 78-23-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Model 744, 745D, and 810 Series Airplanes |
Unsafe Condition
Detachment of the gland nut of the main landing gear shock absorber struts due to insufficient security of the gland nut and locking plate/locking screw combination.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 25 landings after the effective date, and every 25 landings thereafter until the inspection in paragraph (c) is performed, visually inspect the gland nut and locking plate/locking screw combination for security. If loose or not adequately locked, remove the gland nut and inspect threads within 500 landings. Replace gland nut if threads are unacceptable, and replace worn or fractured locking plates before further flight.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 25 landings after the effective date of this AD and thereafter at intervals not to exceed 25 landings from the last inspection until the inspection required by paragraph (c) is performed
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount Model 744, 745D, and 810 Series airplanes, certificated in all categories.
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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