Break in marks are in the Ops rules not the aircraft cert rules. See extract from EU-OPS below. Also note the wording "if designated areas..." etc. This means you do not have to have break in markings but if you do they must conform to 1.800.
Got a Cat 2 Finding during a SAFE ramp check in spain because we didnīt had cut markings at all.
Cessna Citation Jet.
Inbalance