AD 58-05-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 744 | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
| aircraft | Vickers-Armstrongs (Aircraft Limited) | Viscount 745D | Airworthiness Directives; VICKERS Model 700 Series Aircraft |
Unsafe Condition
Failure of elevator and rudder control locks due to over-tightening of the nut securing the lock lever, jamming of elevator anti-balance tab mechanism, loosening of aileron control system fittings, shorting of relays due to insecure armature spring screws, and potential fouling of elevator trim tab chain.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install special shoulder greaser bolts per Mod. D.1421, chamfer pitot head heater bus-bar supplies per Mod. D.2019, inspect and modify elevator anti-balance tab mechanism per PTL No. 160/Mod. D.2239, implement new aileron lever group fittings per Mod. D.2091, increase pilots floor cut-out per Mod. D.2120, install fairleads for elevator trim tab chain per Mod. D.1602, and inspect relays per PTL No. 147 with lock washers and varnish.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required by dates ranging from April 15, 1958, to April 15, 1959, as specified per each item (A to H).
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Vickers-Armstrongs (Aircraft Limited) Viscount 700 Series Aircraft (Viscount 744, Viscount 745D models), all serial numbers.
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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