# STC SA00229BO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Maine Aviation Management Inc, United States
- Description: Descriptive data pertaining to this modification is considered inadequate for duplication in other aircraft.  This approval is limited to the installation made in Cessna Model 421B, Serial Number 421B0507.  Approval for operation in Known Icing Conditions.
- Applied: September 22, 2003
- Status date: February 27, 2006
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3A40A7E049E93A408625712D0059C439.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00229BO

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 421B ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))

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