SA573NW
Installation of a Continental O-200-A engine, Sensenich M69CK/6952 propeller, PA-11 engine mount and cowling, PA-11 windshield, PA-18 flaps, PA-18 balanced horizontal tail surfaces, wing leading edge cuff modification kit, and PA-18 fuel system. Held by Jerry Burr. Last revised March 10, 1978. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.
- Models
- J3C-65 (Army L-4; L-4A; L-4B (Navy NE-1); L-4H; L-4J (Navy NE-2))
- Type certificate
- A-691
- On this site
- Piper J-3 Cub 3,804 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.