Supplemental type certificate · Chromizing Company
- Holder
- Chromizing Company · United States
- Status
- Current · Issued
- Status date
- December 21, 1977
- Product
- Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.
What it approves
Replace the airfoils on P&WA P/Ns 505351, 536751, 665951, 665851 first stage turbine nozzle guid vanes on P&WA engine models listed.
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 · 6
| Make | Model | Data sheet |
|---|
| Pratt & Whitney Division | JT3D-1 | 1E8 |
| Pratt & Whitney Division | JT3D-1-MC6 | 1E8 |
| Pratt & Whitney Division | JT3D-1-MC7 | 1E8 |
| Pratt & Whitney Division | JT3D-3 | 1E8 |
| Pratt & Whitney Division | JT3D-3B | 1E8 |
| Pratt & Whitney Division | JT3D-7 | 1E8 |