Why is it important to lock out and tag out the UH-60's rotor when performing maintenance on the rotor head or swashplate?

Why is it important to lock out and tag out the UH-60's rotor when performing maintenance on the rotor head or swashplate?

• A. To prevent accidental rotor movement, protect maintenance personnel, and safeguard aircraft systems from unintended operation.
• B. To increase rotor speed during maintenance.
• C. To improve visibility of rotor during maintenance.
• D. To align swashplate with turbine.

Answer: (A)

Lockout and tagout during rotor head or swashplate maintenance is about stopping any powered motion from the rotor system. The UH-60 rotor can move suddenly due to engine start, hydraulic pressure changes, or other faults, and a blade or moving swashplate can cause severe injury or damage to personnel and nearby aircraft components. By isolating the energy sources and placing a tag, you ensure the rotor cannot be started or moved while work is being done, and that others know maintenance is in progress. This protects maintenance staff and the aircraft’s systems from unintended operation. It’s not about increasing rotor speed, improving visibility, or aligning the swashplate; those aren’t the purposes of lockout/tagout and could create danger.

Lockout and tagout during rotor head or swashplate maintenance is about stopping any powered motion from the rotor system. The UH-60 rotor can move suddenly due to engine start, hydraulic pressure changes, or other faults, and a blade or moving swashplate can cause severe injury or damage to personnel and nearby aircraft components. By isolating the energy sources and placing a tag, you ensure the rotor cannot be started or moved while work is being done, and that others know maintenance is in progress. This protects maintenance staff and the aircraft’s systems from unintended operation. It’s not about increasing rotor speed, improving visibility, or aligning the swashplate; those aren’t the purposes of lockout/tagout and could create danger.