Do not assume similar-looking parts share a material or maintenance method.

Evidence file

  • Model and revision
  • Part identity
  • Source for compatible process
  • Maintenance record

Flag uncertainty

Identify body, liner, seal and accessories by model revision; do not use a chemical or repair method without document verification.

Scope of validity

Do not generalize a maintenance finding from one revision to other models; link part and source details to the asset record.