# STC SA1557CED

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: King Radio Corp, United States
- Description: Installation of KAS 297 altitude select option.
- Status date: August 1, 1983
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A3](https://openairdocs.org/tcds/2A3)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/51FE3D1B485BAD6A85256CC100821340.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1557CED

## ADs that name it (0)

None.

## Approved models (2)

- Mooney Aircraft Corporation M20J ([TCDS 2A3](https://openairdocs.org/tcds/2A3))
- Mooney Aircraft Corporation M20K ([TCDS 2A3](https://openairdocs.org/tcds/2A3))

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