What it approves
Installation of Model 1620 and 1621 aerial seeders systems.
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 · Simplex Manufacturing Co
- Holder
- Simplex Manufacturing Co · United States
- Status
- Current · Issued
- Status date
- March 17, 1975
- Product
- Aircraft · Rotorcraft
- Certification basis
- Part 21
From FAA DRS. DRS record last changed December 6, 2025.