SA894WE
Installation of Lycoming O-320-A2B engine and Sensenich M74DM-56 propeller. Held by Flint Sam B. Last revised November 5, 1971. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.; Piper Aircraft Inc.
- Models
- PA-18-135, PA-18A-135
- Type certificates
- 1A2, 1A2
- On this site
- Piper PA-18 Super Cub 3,620 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.