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

SE01966WI (2 OF 2)

Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. Held by General Aviation Modifications INC., which holds 22 approved modifications in all. Last revised September 22, 2022. System: engine.

What it applies to

Kind of product
Engine
Design holder
Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Aerospace Technologies Inc.; Continental Motors Inc ATC 72; Continental Motors Inc ATC 72; Continental Motors Inc ATC 72; Continental Motors Inc ATC 72; Continental Motors Inc TC; Continental Motors Inc TC; Continental Motors Inc TC; Continental Motors Inc TC; Continental Motors Inc TC; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Curtiss-Wright/Marquette Inc.; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; Lycoming Engines; 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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TC; Menasco Manufacturing Co. TC; Menasco Manufacturing Co. TC; Menasco Manufacturing Co. TC; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division ATC 28 Pratt &; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division TC; Pratt & Whitney Division TC; Pratt & Whitney Division TC; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming Subsidiary of Textron Inc.; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
Models
GTSIO-520-C, GTSIO-520-D, GTSIO-520-E, GTSIO-520-F, GTSIO-520-H, GTSIO-520-K, GTSIO-520-L, GTSIO-520-M, GTSIO-520-N, IO-520-A, IO-520-B, IO-520-BA, IO-520-BB, IO-520-C, IO-520-CB, IO-520-D, IO-520-E, IO-520-F, IO-520-J, IO-520-K, IO-520-L, IO-520-M, IO-520-MB, IO-520-N, IO-520-NB, IO-520-P, LIO-520-P, IO-240-A, IO-240-B, IOF-240-B, LTSIO-360-E, LTSIO-360-EB, LTSIO-360-KB, LTSIO-360-RB, TSIO-360-A, TSIO-360-AB, TSIO-360-B, TSIO-360-BB, TSIO-360-C, TSIO-360-CB, TSIO-360-D, TSIO-360-DB, TSIO-360-E, TSIO-360-EB, TSIO-360-F, TSIO-360-FB, TSIO-360-G, TSIO-360-GB, TSIO-360-H, TSIO-360-HB,...
Type certificates
E7CE, E7CE, E7CE, E7CE, E7CE, E7CE, E7CE, E7CE, E7CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E5CE, E7SO, E7SO, E7SO, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, E9CE, Teledyne, Teledyne, Teledyne, Teledyne, 217, 217, 217, 217, 217, E-218, E-218, E-218, E-218, E-218, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-259, E-270, E-270, E-272, E-272, E-272, E-272, E-287, E-287, E-287, E-287, E-287, E-287, E-287, 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, 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, 1E13, 1E13, 1E13, 1E13, 1E13, 1E13, 1E13, 1E13, 1E13, 1E13, 1E13, 1E14, 1E14, 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, 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-228, E-277, E-279, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-284, E-285, E-285, E-285, 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-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, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E-304, E00004NY, E00004NY, E00004NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00006NY, E00009NY, E00009NY, E10EA, E10EA, E10EA, E10EA, E10EA, E11EA, 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, E16EA, E16EA, E16EA, E16EA, E19EA, E19EA, E19EA, E19EA, E19EA, E19EA, E26EA, E26EA, E26EA, E26EA, E26EA, E26EA, 191, 67, 67, 67, Whitney, Whitney, Whitney, Whitney, Whitney, Whitney, Whitney, Whitney, Whitney, E-186, E-230, E-230, E-230, E-230, E-230, E-230, E-230, E-230, E-231, E-231, E-231, E-231, E-231, E-231, E-231, E-247, E-247, E-247, E-247, E-247, E-247, E-247, E-264, E-264, E-264, E-264, 5E-4, 5E-5, 5E-8, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, 1E15, E-256, E-256
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.