SE01954SE (PAGE 1)
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
- Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; 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; 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
- O-340-A1A, O-340-A2A, O-340-B1A, AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C, AEIO-360-A1D, AEIO-360-A1E, AEIO-360-A1E6, AEIO-360-A2A, AEIO-360-A2B, AEIO-360-A2C, AEIO-360-B1B, AEIO-360-B1D, AEIO-360-B1F, AEIO-360-B1F6, AEIO-360-B1G6, AEIO-360-B1H, AEIO-360-B2F, AEIO-360-B2F6, AEIO-360-B4A, AEIO-360-H1A, AEIO-360-H1B, AIO-360-A1A, AIO-360-A1B, AIO-360-A2A, AIO-360-A2B, AIO-360-B1B, HIO-360-A1A, HIO-360-A1B, HIO-360-B1A, HIO-360-B1B, HIO-360-C1A, HIO-360-C1B, HIO-360-D1A, HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD, HIO-360-G1A, IO-360-A1A, IO-360-A1B, IO-360-A1B6, IO-360-A1B6D,...
- Type certificates
- E-277, E-277, E-277, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E10, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-274, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286, E-286
- 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 21, 2026.