It was observed recently that the main hoist's wires seemed skewed, and there was occasionally some noise heard when raising and lowering the hook block. It was suspected that this was due to wires having jumped in their tracks at some point. This is typically caused by side loading. It is possible that wire wrap skew occurred during the incident outlined in e-log 46. 

Gordon Crane was contacted for a service call. Crane inspector Ali from Gordon Crane was supervised/assisted by Maico Dalla Valle. They lowered the hoist down into the target pit and supported it on saw horses, then let the wires run all the way out. Ali confirmed that there was a wire wrapping issue, and re-seated the wires properly. The crane is now functioning normally. It is recommended to re-apply lubrication as soon as possible.  

Note: Ali from Gordon Crane has advised that it is acceptable for some degree of wire skew to occur - they can handle the abrasion if there's a small angle between them. However, wires should not be rubbing across each other at a large angle (ex. more than approx. 10 degrees).