# STC SA4072NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: West Aire Systems Inc, United States
- Description: Installation of belt driven freon air conditioning system.
- Applied: September 15, 1989
- Status date: August 14, 1990
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A51EU](https://openairdocs.org/tcds/A51EU)
- Certificate PDF: https://openairdocs.org/files/sha256/fe/fd/fefd066b4634fe366b5e15ef5e172e5277d5254a1df9db54102045e6ec5a75a4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1BDF01D52BB0008585256CC2000C6097.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4072NM

## ADs that name it (0)

None.

## Approved models (2)

- SOCATA TB 20 ([TCDS A51EU](https://openairdocs.org/tcds/A51EU))
- SOCATA TB 21 ([TCDS A51EU](https://openairdocs.org/tcds/A51EU))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

proy #ANM-1008-0214 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA4072NM This certificate issued to: West Aire Systems, Inc.

Part 23 of the Federa 1 Aviation Regulations.

Original Product - Type bertificate Number: A51EV Make: SOCATA-Groupe Aerospatiale Model: TB 20 and TB 21 Description of Type Design Change:

Installation of belt driven freon air conditioning system in accordance with West Aire Drawing List DL-1-12 or DL-1-24, dated October 10, 1989, FAA approved February 23, 1990, or later FAA approved revision.

FAA approved Flight Manual Supplement for Model TB20 S/N 913 and 867 dated February 23, 1990, or later approved revision is required.

FAA approved Flight Manual Supplement for Model TB20 and TB21, applicable to all serial numbers except 913 and 867, dated August 1990, or later approved revision is required.

Approval of this change in type design applies to the above tra certifist nud the sip pshing dalladich is the basis fur appr val shull remain in effect unlil sunrendered, suspended, revoked, or a termination date is stherwise established by the Administrater of the Federal Aviation Administration .

Date of Application: september 15, 1989 Date Reissued:

Date of Issuance: . February 23, 1990 Jale umended: August 14, 1990 EDERAL AVIATION By directiompt the SIdministratur TO MINIST RAID MICHAEL H. BORFITZ, Denver Aircraft Certification Field Office (Signature) Supervisor Northwest Mountain Region, Denver, Colorado

47.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA4072NM model aircraft only. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications including changes in type design, will introduce no adverse effect upon the airworthiness A copy of this Certificate and Continuation sheet must be maintained as part of the permanent records for the modified aircraft.

**FAA FORM 8110-2-1 (10-69) PAGE 3 OF PAGES**

## Every issue (1)

- August 14, 1990: Amended, Current. [certificate](https://openairdocs.org/files/sha256/fe/fd/fefd066b4634fe366b5e15ef5e172e5277d5254a1df9db54102045e6ec5a75a4)

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