SA921NW
Installation of a Lycoming O-320-B2A engine, a Sensenich 74DM-O-56 propeller, and 8:50 x 6:00 tires with 2-puck Cleveland brakes. Held by Dale J Blomquist. Last revised April 29, 1980. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- FS 2003 Corp.
- Models
- PA-12
- Type certificate
- A-780
- On this site
- Piper PA-12 Super Cruiser 1,247 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.