SE01954SE (PAGE 3)
Installation of engine crankcase seal. Held by Ly-Con Rebuilding Company, which holds 8 approved modifications in all. Last revised November 14, 2024. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines
- Models
- AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5, AEIO-540-D4D5, AEIO-540-L1B5, AEIO-540-L1B5D, AEIO-540-L1D5, HIO 540-A1A, IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5, IO-540-AB1A5, IO-540-AC1A5, IO-540-AE1A5, IO-540-B1A5, IO-540-B1B5, IO-540-B1C5, IO-540-C1B5, IO-540-C1C5, IO-540-C2C, IO-540-C4B5, IO-540-C4B5D, IO-540-C4C5, IO-540-C4D5, IO-540-C4D5D, IO-540-D4A5, IO-540-D4B5, IO-540-D4C5, IO-540-E1A5, IO-540-E1B5, IO-540-E1C5, IO-540-G1A5, IO-540-G1B5, IO-540-G1C5, IO-540-G1D5, IO-540-G1E5, IO-540-G1F5, IO-540-J4A5, IO-540-K1A5, IO-540-K1A5D, IO-540-K1B5, IO-540-K1B5D, IO-540-K1C5, IO-540-K1D5,...
- Type certificates
- 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, 1E4, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E-295, E00004NY, E00004NY, E00004NY, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA, E14EA
- 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.