SE5945SW
Grind mitrided choked engine cylinders .010-inch oversize and install .010-inch oversize pistons and rings. Held by Superior Air Parts. Last revised June 18, 1985. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
- Models
- O-235-N2C, O-235-N2A, O-235-K2C, O-235-L2C, O-235-P2C, O-235-P1, O-235-M3C, O-235-L2A, O-235-K2A, O-235-K2B, O-235-M2C, O-235-P3C, O-235-P2A, O-235-M1
- Type certificates
- E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223, E-223
- 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 5, 2026.