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← Aviation glossary
MAINTENANCE PROGRAMSINTERMEDIATE

Hard-time maintenance

fixed-interval maintenance Synonym

A maintenance process requiring removal, overhaul or discard at a fixed approved interval.

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TECHNICAL EXPLANATION

What it means technically

Intervals can be based on hours, cycles, calendar time or combinations and are controlled by the approved maintenance program.

FULL CONTEXT

How the term is used

Hard-time control uses a defined life or interval regardless of apparent condition. It may apply to components, parts or scheduled tasks where reliability is managed through fixed limits.

MAINTENANCE CONTEXT

Where you may encounter it

Planning and records systems track utilization and ensure action before the limit.

Safety and misunderstanding note

Condition or test results do not automatically extend a hard-time limit without approved authorization.

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