A manufacturer of inherently dangerous products such as helicopters must provide maintenance instructions that do not rely solely on inspection methods (such as visual inspection of torque stripes) that are unreliable indicators of the defect being inspected for. Where a simple mechanical check (such as applying a spanner) would reliably detect the defect, the maintenance manual must instruct that such a check be performed. A maintenance manual for a helicopter constitutes part of the 'goods' for the purposes of the defective goods provisions of the Trade Practices Act 1974 (Cth), and an inadequate manual may constitute a 'defect' within the meaning of s 75AC.
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