Using a mobile ladder with damage or missing parts is acceptable if:

Using a mobile ladder with damage or missing parts is inherently unsafe, regardless of any subjective assessments of safety or recent inspections that may have been performed. The integrity of a ladder is crucial for ensuring the safety of the user, and any damage or missing components compromise that integrity and increase the risk of accidents or falls.

Even if a user believes the ladder is safe or it has been inspected recently, these factors do not change the fundamental requirement that ladders must be fully operational and in good condition to be considered safe for use. Minor issues, in particular, can lead to significant safety hazards, making it essential to ensure that any mobile ladder is fault-free before use. In light of these points, the only correct approach is to avoid using a mobile ladder that has any damage or missing parts.