0 STCs approved for the Viking DHC-6 Twin Otter 300 / 400 (Series 100, 200, 300, 400 (Viking Air relaunched)) family · FAA quick reference
Quick reference only — not a compliance record.
This list is for research convenience and may be incomplete or out of date.
It is not an airworthiness compliance determination. Always verify against the
official FAA record, and check directly with the FAA before relying on it. ADs are mandatory;
STCs indicate approval for the type (not installation on a specific airframe); SAIBs are advisory.
Supplemental Type Certificates (STCs) approved for the Viking DHC-6 Twin Otter 300 / 400 type — FAA-approved modifications available for this aircraft family. Approval for the TYPE does not mean a given STC is installed on any individual airframe (that lives in the logbooks/337s).
No STCs matched the Viking DHC-6 Twin Otter 300 / 400 family in our current FAA dataset. This can mean none apply, or that they are recorded under a different designation — always confirm directly with the FAA.