Philippines based Aviation Concepts Technical Services, Inc. (ACTSI) is pleased to announce of recently upgraded 4A/4C capability from Federal Aviation Administration (FAA) following the preliminary 1A/1C approval received in the middle of March. With a strong and experienced Gulfstream team, the ACTSI MRO is now capable to provide maintenance services for Gulfstream G450, G550, G650 & G650ER.