Airworthiness Directive · Amendment 39-9311 · Vickers-Armstrongs (Aircraft Limited) Airplanes
Vickers-Armstrongs (Aircraft Limited) Airplanes
This AD applies to Vickers-Armstrongs (Aircraft Limited) Viscount 744, Viscount 745D, Viscount 810.
The models as the FAA's AD index lists them. The serial ranges, installed parts and exceptions are in the AD itself: read it at the FAA.
This amendment adopts a new airworthiness directive (AD), applicable to all British Aerospace Model Viscount 744, 754D, and 810 airplanes, that requires an inspection to detect corrosion of the tailplane assemblies, and correction of discrepancies. This amendment is prompted by a report of corrosion on the main spar top and bottom forward boom of the tailplane assemblies and reports of cracking in the upper root joint attachment fitting. The actions specified by this AD are intended to detect and prevent such cracking or corrosion of the main spar forward booms or the upper root joint attachment fitting, which consequently could lead to the failure of the tailplane assemblies; this condition could result in reduced controllability of the airplane.
