After many decades in aerospace manufacturing including 13 years with Twin Commander Aircraft, culminating in leading the storied brand over the last three years, Brian Harbaugh is retiring. Harbaugh came to Twin Commander Aircraft when the FirstMark group of companies purchased the type certificate in 2008. When current owner Ontic purchased FirstMark in 2018, Harbaugh was selected to run Twin Commander and sister company Aircraft Belts. In that time he has worked tirelessly to ensure the airplane’s many parts suppliers continue to support the airplane with the best possible availability at the most reasonable prices. A native of Palm Beach Gardens, Florida, Harbaugh was helping to run his family gas stations by the time he turned 13. “It’s where I…