SE7674SW
Grind nitrided cylinder barrels plus .010 over size pistons, to .010 and install SL10545P10 SL74241P10 compression rings and SL73857P10 Oil Control rings. Held by Superior Air Parts, INC, which holds 3 approved modifications in all. Last revised October 25, 1993. 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; 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; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
- Models
- IO-540-AA1A5, TIO-541-E1D4, TIO-541-E1B4, TIO-541-E1C4, TIO-541-A1A, TIO-541-E1A4, TIO-540-N2BD, TIO-540-R2AD, TIO-540-U2A, TIO-540-J2BD, TIO-540-F2BD, TIO-540-V2AD, TIO-540-A2C, LTIO-540-R2AD, TIO-540-A2B, TIO-540-A2A, TIO-540-A1B, TIO-540-A1A, LTIO-540-V2AD, LTIO-540-U2A, LTIO-540-N2BD, LTIO-540-J2BD, LTIO-540-J2B, LTIO-540-F2BD, TIO-540-J2B, TIO-360-A3B6, TIO-360-A1B, TIO-360-A1A, TIO-360-C1A6D, TIGO-541-D1B, TIGO-541-E1A, TO-360-C1A6D, TO-360-F1A6D
- Type certificates
- 1E4, E10EA, E10EA, E10EA, E10EA, E10EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E16EA, E16EA, E16EA, E16EA, E19EA, E19EA, E26EA, E26EA
- 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.