# STC ST881SO

- 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, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A2SW](https://openairdocs.org/tcds/A2SW)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/CA2A95D520C9C63185256CC3000374C0.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST881SO

## ADs that name it (0)

None.

## Approved models (3)

- Israel Aircraft Industries Ltd. 1121 ([TCDS A2SW](https://openairdocs.org/tcds/A2SW))
- Israel Aircraft Industries Ltd. 1121A ([TCDS A2SW](https://openairdocs.org/tcds/A2SW))
- Israel Aircraft Industries Ltd. 1121B ([TCDS A2SW](https://openairdocs.org/tcds/A2SW))

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