# STC SA3239NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Advanced Instrument Incorporated, United States
- Description: Relocate battery to forward of fire wall, add cowl flap extensions and relocate cylinder head temperature probe to cylinder number 3.
- Applied: January 26, 1979
- Status date: August 18, 2006
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 3A24](https://openairdocs.org/tcds/3A24)
- Certificate PDF: https://openairdocs.org/files/sha256/a3/95/a3955b56bc74d7fe582abddc4a1e56edf9cbd161054974a15212b51357db84a0
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/06A47B042CF430A58625721B006434D8.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3239NM

## ADs that name it (0)

None.

## Approved models (2)

- The Cessna Aircraft Company A185E ([TCDS 3A24](https://openairdocs.org/tcds/3A24))
- The Cessna Aircraft Company A185F ([TCDS 3A24](https://openairdocs.org/tcds/3A24))

## What the certificate says

Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record.

This Certificate issued to Advanced Instrument Incorporated 2306 Woodmont Boulevard Nashville, TN 37215 Part 3 of the Civil Air Regulations.

3A24 Cessna A185E, A185F Description of Type Design Change: Relocate battery to forward of fire wall, add cowl flap extensions and relocate cylinder head temperature probe to cylinder number 3 in accordance with FAA sealed Mission Aviation Fellowship Drawing List Number 16A-000 dated February 6, 1979 revision C dated February 18, 1986 or later FAA sealed revisions.

Limitations and Conditions: The approval of this change in type design applies to the basic aircraft of the specified models that are otherwise unmodified. This approval should not be extended to other aircraft of these models on which other previously approved modifications are incorporated, unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

Date of application: January 26, 1979

Date of issuance : March 18, 1986

Date reissued: August 18, 2006

( Signature)

Manager, Technical and Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

## Every issue (1)

- August 18, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a3/95/a3955b56bc74d7fe582abddc4a1e56edf9cbd161054974a15212b51357db84a0)

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