Using the Six Sigma DMAIC Approach to Improve Maintenance Practices of Ground-Service Mechanical Equipment within a Sub-Saharan African Airport. International Journal of Applied Sciences and Smart Technologies, [S. l.], v. 8, n. 1, p. 81–118, 2026. DOI: 10.24071/4etrde73. Disponível em: https://ejournal.usd.ac.id/index.php/ijasst/article/view/717. Acesso em: 31 jul. 2026.