What it approves
Installation of environmental control unit.
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
Supplemental type certificate · Associated Air Center
- Holder
- Associated Air Center · United States
- Status
- Current · Amended
- Status date
- October 4, 1985
- Product
- Aircraft · Rotorcraft
- Certification basis
- Part 21
- Data sheet
- TCDSH4SW
From FAA DRS. DRS record last changed December 5, 2025.