49 CFR §192.803

Abnormal operating condition means a condition identified by the operator that may indicate a malfunction of a component or deviation from normal operations that may: Evaluation means a process, established and documented by the operator, to determine an individual's ability to perform a covered task by any of the following: Qualified means that an individual has been evaluated and can:

(a) Indicate a condition exceeding design limits; or

(b) Result in a hazard(s) to persons, property, or the environment. (a) Written examination; (b) Oral examination; (c) Work performance history review; (d) Observation during: (1) Performance on the job, (2) On the job training, or (3) Simulations; (e) Other forms of assessment. (a) Perform assigned covered tasks; and (b) Recognize and react to abnormal operating conditions.