fault-free en · ADJ
Etymology
From fault + -free.
Meanings
-
(not-comparable) Without any faults being evident.
Hull Trains Managing Director Louise Cheeseman explained: "On arrival in the UK, they are required to pass fault-free running on the tracks as part of final safety checks, before undergoing the final stages of training and familiarisation with our staff."
2019 November 20, “Hull Trains prepares to introduce its five brand-new Hitachi bi-modes”, in Rail, page 20: