# STC SA4158NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: American Aviation Inc, United States
- Description: Option 1:  Installation of American Aviation, Inc., intercooled engines as modified by Supplemental Type Certificate (STC) SE4159NM in accordance with American Aviation Inc. Top Drawing List TDL 063, dated July 8, 2002, or later FAA approved revision.  A copy of American Aviation Inc. Approved Flight Manual Supplement (AFMS), dated May 1, 2003, or later FAA approved revision must be carried in the modified aircraft.  Option 2:  This installation may be installed with cowl scoops only in accordance with American Aviation Inc. Top Drawing List TDL 063, dated July 8, 2002, or later FAA approved revision.  No AFMS is necessary for this option.

NOTE:  This approval includes Cessna 340 series aircraft previously modified per the following STC s:  SA1881SW, SA2346SW, SA4241SW, SA7365SW, SA7382SW, and SA8604SW.
- Applied: August 7, 1987
- Status date: May 1, 2003
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A25](https://openairdocs.org/tcds/3A25)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A1064EECFFEFB1CF86256D8A00572D01.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4158NM

## ADs that name it (0)

None.

## Approved models (2)

- The Cessna Aircraft Company 340 ([TCDS 3A25](https://openairdocs.org/tcds/3A25))
- The Cessna Aircraft Company 340A ([TCDS 3A25](https://openairdocs.org/tcds/3A25))

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