Enhancement of 100-Hour Inspections on Thrush S2R-T34 Agricultural Aircraft through Lean Maintenance
DOI:
https://doi.org/10.18779/ingenio.v9i1.1116Keywords:
FMEA, 5S, Just-in-Time, Aeronautical MRO, Mechanical availabilityAbstract
In agricultural aviation used for aerial herbicide application in plantations, 100-hour inspections as specified by FAA regulation 14 CFR §91.409, ensure safety and availability but face issues such as excessive inventories, unnecessary movements, and rework. This study proposes applying Lean Maintenance to Thrush S2R-T34 aircraft, integrating the 5S methodology to optimize workshops, a Just-in-Time system for efficient spare-parts supply, and a digital checklist based on Failure Mode and EffectsAnalysis and a Process Analysis Diagram. The intervention reduced non-productive inventory by 40%,spare-parts management time by 45%, and movements by 26,7%. Key indicators also improved significantly: MTBF increased from 13,0 h to 26,6–29,5 h (+115%), MTTR dropped from 4,3–4,6 h to = 3,1 h (-30 %), and mechanical availability rose from 74–75% to 90%, freeing approximately 120 flight-hours per semester per aircraft. This scalable model offers a replicable strategy to optimize aircraft maintenance.
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