AD 65-18-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Models 744, 745D and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Models 744, 745D and 810 Series Airplanes |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 810 | Airworthiness Directives; VICKERS Models 744, 745D and 810 Series Airplanes |
Unsafe Condition
Severe corrosion on the bore surfaces of the support tubes of the engine mount assemblies, as specified in Drawing Nos. 70037 Sht. 3, 80237 Sht. 3, 80237 Sht. 35, and 81037 Sht. 29.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct an inspection of the support tubes using radiographic or ultrasonic methods per British Aircraft Corporation Preliminary Technical Leaflets No. 252/Issue 2 (for 744/745D) or No. 117/Issue 2 (for 810 Series). If corrosion exceeds 0.030 inch, replace the tube before further flight. Perform dewatering/reprotection if no corrosion or within limits. Repeat inspections every seven years or 500 hours, whichever comes later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 4,000 hours' time in service or at next engine overhaul period, whichever is sooner, 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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