Weak Statements
Unverifiable Mandatory Requirements
Statement consistent with negation of a condition
5.110 The Yard Truck shall have human engineering design requirements that conform to SAE ARP 1247C - Human Engineering.
The statement does not require that all "human engineering design requirements" shall conform, only that some do.
Unverifiable Mandatory Requirement
5.107 The Yard Truck shall be fitted with an operator seat that is fully adjustable.
Process, but no limits or goals – adult humans range from 0.8 to 2.77 m in height.