Lycoming IGSO-480-A1D6 engines in lieu of original GSO-480-B1A6.
Lycoming IGSO-480-A1D6 engines in lieu of original GSO-480-B1A6.
Please contact modification supplier for further details.
STC Status: Reissued
STC Date: 04/11/70
Responsible Office: Los Angeles Aircraft Certification Office (ANM-100L), Tel: (562) 627-5200
Twin Commander Aircraft Corporation