Supplemental type certificate · Northern Airways, Inc
- Holder
- Northern Airways, Inc · United States
- Status
- Current · Issued
- Status date
- September 19, 1984
- Product
- Aircraft · Large Multi-Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 5, 2025.
What it approves
Installation of R-1830-92 engine in place of R-1830-90C and removal of two speed supercharger speed controls.
ADs that name this STC · 0
An AD can apply because an STC is installed, or mention one in its text.
No AD in this release names this STC Approved models · 2
| Make | Model | Data sheet |
|---|
| McDonnell Douglas Corporation | DC3C-R-1830-90C (Army C-47B) | A-669 |
| McDonnell Douglas Corporation | DC3C-R-1830-90C (Navy R4D-6) | A-669 |