AD/HU 369/99 - Four-Bladed Tail Rotor Fork

Unless the initial inspection is already accomplished, before further flight after

30 June 1999; and if affected, thereafter at intervals not to exceed 50 hours time in service.

If no ridges are found on the initial inspection, raise an MDR quoting this directive, and include action under para 1E of the requirement document if necessary.

This Airworthiness Directive becomes effective on 30 June 1999.