What it approves
Installation of 'Summer-all defroster valve.'
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 · Sumrall & Tears
- Holder
- Sumrall & Tears · United States
- Status
- Current · Issued
- Status date
- January 10, 1974
- Product
- Aircraft · Single-Engine
- Certification basis
- Part 21
- Data sheet
- TCDS1A2
From FAA DRS. DRS record last changed December 6, 2025.