AD 63-23-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; VICKERS Model 810 Series Aircraft |
Unsafe Condition
Fatigue failures have been reported on flap beams in the areas shown in Figure 1 of Preliminary Technical Leaflet No. 107 (800/810 Series).
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Required Actions
Conduct dye penetrant or FAA approved equivalent inspection for cracks in accordance with PTL 107. Reinspect at intervals not exceeding 1,500 flights until 10,000-11,000 flights, then at intervals not exceeding 600 flights until 12,000 flights. Incorporate modification FG.1946 or repair/reinforcing scheme per PTL 107 thereafter.
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Compliance Time
Within 500 flights after the effective date of this AD for aircraft with 10,000 or less flights, and within 100 flights for those over 10,000 flights. Reinforcing must be incorporated within 2,000 flights after the effective date.
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount Model 810 Series Aircraft, all serial numbers.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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