The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SE00226NY

Replacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter. Held by Hartzell Engine Technologies, LLC, which holds 45 approved modifications in all. Last revised March 9, 2016. 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; 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Models
IO-320-A1A, IO-320-A2A, IO-320-B1A, IO-320-B1B, IO-320-B1C, IO-320-B1D, IO-320-B1E, IO-320-B2A, IO-320-C1A, IO-320-C1B, IO-320-D1A, IO-320-D1B, IO-320-D1C, IO-320-E1A, IO-320-E1B, IO-320-E2A, IO-320-E2B, IO-320-F1A, IO-360-A1A, IO-360-A1B, IO-360-A1B6, IO-360-A1B6D, IO-360-A1C, IO-360-A1D, IO-360-A1D6, IO-360-A1D6D, IO-360-A2A, IO-360-A2B, IO-360-A2C, IO-360-A3B6, IO-360-A3B6D, IO-360-A3D6D, IO-360-B1A, IO-360-B1B, IO-360-B1C, IO-360-B1D, IO-360-B1E, IO-360-B1F, IO-360-B1F6, IO-360-B1G6, IO-360-B2E, IO-360-B2F, IO-360-B2F6, IO-360-B4A, IO-360-C1A, IO-360-C1B, IO-360-C1C, IO-360-C1C6,...
Type certificates
1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 1E12, 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, 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-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, 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, 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, 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-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, E-295, E-295, 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, E10EA, E10EA, E10EA, E10EA, E10EA, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, E-229, E-229, E-229, E-229, E-229, E-229, E-229, E-229, E-229, E-229, E-229
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.