# STC SA4697SW

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Howell Instruments, Inc, United States
- Description: Installation of Howell autotemp and autotak indicators.
- Applied: February 19, 1982
- Status date: June 14, 1982
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- Certificate PDF: https://openairdocs.org/files/sha256/0d/7e/0d7e5b57e56472c83c11ff69ce7554e0fd52adac1f19a0c7ebc6c7e063757710
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/41846BEB32F3E05085256CC2000E3DFE.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4697SW

## ADs that name it (0)

None.

## Approved models (3)

- Twin Commander Aircraft LLC 690 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690A ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690B ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

## 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.

United Starts or amrrica Bepartmcnt of transportation— federal atoiation Administration Supplemental 'Cgpe Certificate ///" /iSUwrUW «»/£ft,«TSA4697SW Project A5701SW-DSPL- 190 Howell Instruments, Inc.

3479 W. Vickery Blvd.

Fort Worth, Texas 76107 4vJiw*£iuft&JeieAi;ctwf^d^fc>£te>tvtM^ ^i&^fi^^£vw>7V/rn4e&J!fo.a4vwcn*£^^ 3 W^$£<s- ClVll Air *slea4tta£&n&.

Gr*at-n&t t-Jewcuict —— <J<y^w'&eid^t&i&*SutTn0e<i>- : 2A4 : Gulf stream American : 690, 690A, 690B : Installation of Howell Autotemp and Autotak Indicators according to Drawing List 810300 dated 2/19/82, or later FAA approved revision.

FAA Approved Supplement to Pilot's Operating Handbook and/or FAA Approved Airplane Flight Manual dated June 14, 1982, is required.

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

^/^^j^r-t^(M& ^nd Jfa A*jJtfij>r&n^da^&<u>/u*w m,: February 19, 1982 June 14, 1982 / //Y,<^o /r: //*f SAs' "^\ , t /1.£^T^fjJ^7/^^/ -————,.—— ^LTLJU- |^^ ^___^H flLP* ft*»+t* U H "fcai f^Don P. WatSOn ^gnature) Manager, Aircraft Certification Division Southwest Region (Title)

FAA FO«M SI 10-2 (10-68)

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and £IP code) Irom (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and <7/> code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):.

## Every issue (1)

- June 14, 1982: Issued, Current. [certificate](https://openairdocs.org/files/sha256/0d/7e/0d7e5b57e56472c83c11ff69ce7554e0fd52adac1f19a0c7ebc6c7e063757710)

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