AD 70-08-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Models 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Models 744, 745D, and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; BRITISH AIRCRAFT CORPORATION Models 744, 745D, and 810 Series Airplanes |
Unsafe Condition
The obsolete cabin blower drive quill may fail, leading to loss of cabin pressurization or engine power.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the obsolete cabin blower drive quill with a serviceable or reworked unit per specified Dowty Rotol Service Bulletins or FAA-approved equivalent. Use designated replacement part numbers for models 744, 745D, and 810.
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Compliance Time
within the next 750 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
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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