Supplemental type certificate · Yehnert Helicopters, Inc
- Holder
- Yehnert Helicopters, Inc · United States
- Status
- Current · Issued
- Status date
- August 11, 1976
- Product
- Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.
What it approves
Install two locking pins in Franklin Part Number 21014J oil transfer collar, 180 degrees apart, to prevent rotation of oil seal in collar.
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 · 3
| Make | Model | Data sheet |
|---|
| Wytwornia Sprzetu Komunikacyjnego | 6A-350-C1 | E9EA |
| Wytwornia Sprzetu Komunikacyjnego | 6A-350-C1A | E9EA |
| Wytwornia Sprzetu Komunikacyjnego | 6A-350-C2 | E9EA |