# STC SQ00338AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Unison Industries, United States
- Description: Unison igniter leads, P/N9048222-101, 102, 103, 104, 105, 106.
- Status date: September 17, 1993
- Product: Engine
- Certification basis: Part 21
- Data sheets: [TCDS E10CE](https://openairdocs.org/tcds/E10CE), [TCDS E1GL](https://openairdocs.org/tcds/E1GL), [TCDS E4CE](https://openairdocs.org/tcds/E4CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DE2A6DFE6FDC8EAE85256CC200622421.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SQ00338AT

## ADs that name it (0)

None.

## Approved models (24)

- Allison Engine Company Inc. 250-B15G ([TCDS E10CE](https://openairdocs.org/tcds/E10CE))
- Allison Engine Company Inc. 250-B17 ([TCDS E10CE](https://openairdocs.org/tcds/E10CE))
- Allison Engine Company Inc. 250-B17B ([TCDS E10CE](https://openairdocs.org/tcds/E10CE))
- Allison Engine Company Inc. 250-B17C ([TCDS E10CE](https://openairdocs.org/tcds/E10CE))
- Allison Engine Company Inc. 250-B17E ([TCDS E10CE](https://openairdocs.org/tcds/E10CE))
- Allison Engine Company Inc. 250-C18 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C18A ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C18B ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C18C ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20B ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20F ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20J ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20R ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20R/1 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20R/2 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C20R/4 ([TCDS E4CE](https://openairdocs.org/tcds/E4CE))
- Allison Engine Company Inc. 250-C28B ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))
- Allison Engine Company Inc. 250-C28C ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))
- Allison Engine Company Inc. 250-C30 ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))
- Allison Engine Company Inc. 250-C30G ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))
- Allison Engine Company Inc. 250-C30M ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))
- Allison Engine Company Inc. 250-C30P ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))
- Allison Engine Company Inc. 250-C30S ([TCDS E1GL](https://openairdocs.org/tcds/E1GL))

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