What it approves
Modification of ring grooves on Continental Motors pistons 539814(3 ring) and 627738 (4 ring).
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 · Van Der Horst Corp of America
- Holder
- Van Der Horst Corp of America · United States
- Status
- Current · Issued
- Status date
- January 1, 1960
- Product
- Engine
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 5, 2025.