# STC SA1988CE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: R C Allen Instruments Inc, United States
- Description: Installation of the AID/RCAI battery temperature monitor on the optional 20 cell battery as a secondary system.
- Applied: April 2, 1980
- Status date: February 11, 1991
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A22CE](https://openairdocs.org/tcds/A22CE)
- Certificate PDF: https://openairdocs.org/files/sha256/92/10/9210e6792789338c1b0cbb540941fc5046a031d7a0b5f98d9a565e7bbc64d54a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DF30E5281F22A53386258061006EF20A.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1988CE

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 550 ([TCDS A22CE](https://openairdocs.org/tcds/A22CE))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- February 11, 1991: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/92/10/9210e6792789338c1b0cbb540941fc5046a031d7a0b5f98d9a565e7bbc64d54a)

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