# STC SA3591SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Textron Aviation Inc, United States
- Description: Installation of single SFENA H341AGM standby attitude instrument.
- Applied: January 20, 1986
- Status date: January 23, 2017
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A21EA](https://openairdocs.org/tcds/A21EA)
- Certificate PDF: https://openairdocs.org/files/sha256/be/8d/be8dab72e7e5de15a16480991756f4904c8b672eb0dc5d533f96d370f9a0ceb4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3CB4FFD7DC834A7C8625815900506F90.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3591SW

## ADs that name it (0)

None.

## Approved models (2)

- Bombardier Inc. CL-600-1A11 (CL-600) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))
- Bombardier Inc. CL-600-2A12 (CL-601) ([TCDS A21EA](https://openairdocs.org/tcds/A21EA))

## 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.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title Textron Aviation Inc.

One Cessna Boulevard Wichita, KS 67215 2 SA3591SW Federal Aviation Regulations.

25 Installation of single SFENA H341AGM Standby Attitude Instrument in accordance with Arkansas Modification Center Drawing List 600-068 dated 2/12/86, or later FAA approved revision.

Compatibility of this modification with other previously approved modifications must be determined by the installer.

Canadair CL-600-1A11, 2A12 January 23, 2017 December 9, 1986 January 20, 1986 March 20, 1986 A21EA Mark Fuller STC ODA administrator ODA-100129-CE

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

## Every issue (2)

- January 23, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/be/8d/be8dab72e7e5de15a16480991756f4904c8b672eb0dc5d533f96d370f9a0ceb4)
- December 9, 1986: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/8a/73/8a731d2eb7276f4e422fc23da385bb4276ccdc8e39f3df1098a8fee556706fb4)

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