AD 86-16-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; BRITISH AEROSPACE VISCOUNT Model 800 Series Airplanes |
Unsafe Condition
Nose landing gear collapse as a result of a faulty hydraulic cut out valve (Part Number AIR 41916).
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Required Actions
Modify the cut out valve (Part Number AIR 41916) in accordance with Automotive Products Modification Standard SA 3490. Obtain service documents from British Aerospace, Inc. if not already received.
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Compliance Time
Within the next 1,000 hours time-in-service or nine months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 810 airplanes, Model 800 series, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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