30 CFR § 56.19120
Procedures for inspection, testing, and maintenance.
INSPECTION AND MAINTENANCE
A systematic procedure of inspection, testing, and maintenance of shafts and hoisting equipment shall be developed and followed. If it is found or suspected that any part is not functioning properly, the hoist shall not be used until the malfunction has been located and repaired or adjustments have been made.
For more information: See MSHA'S Program Policy Manual