AD 73-12-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Series 810 Airplanes |
Unsafe Condition
Failure of the rubber seal sleeves P/N FRS.-F-Series 1 in the power plant fire extinguisher system pipe connector assembly could result in a possible restriction in the fire extinguisher pipe.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the rubber seal sleeves P/N FRS.-F-Series 1 in the power plant fire extinguisher system with seal sleeves of the same part number within the next 500 hours' time in service after the effective date of this AD. Subsequent replacements must occur at intervals not exceeding 5 years from the last replacement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 500 hours' time in service after the effective date of this AD, unless already accomplished within 5 years prior to the effective date of this AD, and thereafter at intervals not to exceed 5 years from the last replacement
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 810 airplanes (Series 810)
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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