# STC SA4583SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Air Comm Corporation, United States
- Description: Installation of an electrically-driven Vapor Cycle, Freon or Refrigerant R-134a, Air Conditioning System
- Applied: December 12, 1981
- Status date: July 2, 2019
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- Certificate PDF: https://openairdocs.org/files/sha256/97/4b/974b41cbeca24d1c8928ac718a05fb57f1a54715c9e187c43ba0931b40b15405
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/43726BEA68BEEB5C862585CF00381A28.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4583SW

## ADs that name it (0)

None.

## Approved models (7)

- 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))
- Twin Commander Aircraft LLC 690C ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690D ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 695 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 695A ([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.

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

Number: SA4583SW

Parts 3 of the Civil Air Regulations.

Original Product – Type Certificate Number: 2A4 Make: Twin Commander Aircraft Corporation Model: 690, 690A, 690B, 690C, 690D, 695, 695A

Installation of an electrically-driven Vapor Cycle, Freon or Refrigerant R-134a, Air Conditioning System in accordance with Drawing List DL-81-27, Revision S, dated January 25, 2005, or later FAA approved revision.

FAA-approved Supplement to Pilot’s Operating Handbook and/or FAA-approved Airplane Flight Manual, Revision 2, dated August 15, 1994, is required. The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Date of Application: December 12, 1981 Date Reissued: 9/27/84; 3/23/90; 8/14/92; 6/5/07; 1/4/11; 5/17/13;

7/2/19 Date of Issuance: January 15, 1982 Date Amended: February 28, 1997 Revision 5

Signature

Title Jim Grigg Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service Air Comm Corporation 1575 West 124th Avenue Westminster, CO 80234

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

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

Transfer the ownership of Supplemental Type Certificate Number: SA4583SW

To (Name and address of transferee)

From (Name and address of grantor)

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA4704SW

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

## Every issue (2)

- July 2, 2019: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/97/4b/974b41cbeca24d1c8928ac718a05fb57f1a54715c9e187c43ba0931b40b15405)
- May 17, 2013: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/22/f9/22f9e66a3a1bc8d44f4daa8bc435c58ac0b1a9a1329cb8073aa75b032989fa96)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.