Supplemental type certificate · National Aircraft Sales, Inc
- Holder
- National Aircraft Sales, Inc · United States
- Status
- Current · Issued
- Status date
- January 1, 1960
- Product
- Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.
What it approves
Modification of crankshafts and reidentification according to their respective counterweight dampers.
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 |
|---|
| Pratt & Whitney Division | Double Wasp CB Series | E-264 |
| Pratt & Whitney Division | Double Wasp Series | E-231 |