As President of the airline, Lumenta led a number of bold reforms in the organisation. On his arrival Garuda Indonesian Airways was in debts of around US$914 million. Under his leadership the company experienced increased popularity and profits. In 1985 he created a controversy by hiring foreign brand consultants
Landor Associates to create a new logo and colour scheme for Garuda Indonesian Airways, a project that cost the company millions of US dollars. The airline was renamed into Garuda Indonesia. This move was later on applauded as vital for the reputation and
corporate identity of Garuda Indonesia as the national airline. Lumenta also increased flights frequency and destinations, reduced ticket prices and collaborated with Merpati, introducing flexible tickets valid for both Indonesian airlines. Lumenta was also known for his solidarity and generosity to committed employees; he increased staff basic salaries by almost ten folds and improved staff reward and welfare systems. ==Other achievements==