# STC SA920SO

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Teledyne Battery Products, United States
- Description: Installation of Teledyne P/N BB638/T- Series lead-acid replacement batteries.
- Status date: February 24, 1978
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20), [TCDS A14CE](https://openairdocs.org/tcds/A14CE), [TCDS A24CE](https://openairdocs.org/tcds/A24CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CEC0E5778AB4A3E485256CC20058EA85.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA920SO

## ADs that name it (0)

None.

## Approved models (4)

- Raytheon Aircraft Company 200 (A100-1 (U-21J)) ([TCDS A24CE](https://openairdocs.org/tcds/A24CE))
- Raytheon Aircraft Company 99 ([TCDS A14CE](https://openairdocs.org/tcds/A14CE))
- Raytheon Aircraft Company A100 (U-21F) ([TCDS A14CE](https://openairdocs.org/tcds/A14CE))
- Raytheon Aircraft Company E90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))

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