Sec. 137.31 - Aircraft requirements. No person may operate an aircraft unless that aircraft -- (a) Meets the requirements of §137.19(d); and (b) Is equipped with a suitable and properly installed shoulder harness for use by each pilot.
No person may operate an aircraft unless that aircraft --
(a) Meets the requirements of §137.19(d); and
(b) Is equipped with a suitable and properly installed shoulder harness for use by each pilot.