SE2741NM
Installation of high compressoin pistonsd, connecting rods, bearings and associated hardware. Held by Firewall Forward INC, which holds 3 approved modifications in all. Last revised September 7, 2005. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines
- Models
- IO-360-A1B6, IO-360-A1B6D, IO-360-A3B6, IO-360-A3B6D
- Type certificates
- 1E10, 1E10, 1E10, 1E10
- 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.