Supplemental type certificate · Celesco Industries
- Holder
- Celesco Industries · United States
- Status
- Current · Reissued
- Status date
- June 8, 1973
- Product
- Aircraft · Large Multi-Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.
What it approves
Installation of fire warning monitoring circuit in engine fire detection system. (707-227, 720-027)
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 | 720 | 4A28 |