Supplemental type certificate · Department of the Air Force
- Holder
- Department of the Air Force · United States
- Status
- Current · Issued
- Status date
- December 29, 1970
- Product
- Aircraft · Large Multi-Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.
What it approves
Modification of rigid high pressure starter air lines on numbers 2 and3 engines. (707-153B) (707-353B)
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 |
|---|
| The Boeing Company | 707 | 4A21 |
| The Boeing Company | 707 | 4A26 |