# STC SA4-1076

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Rotorcraft Enterprises LLC, United States
- Description: Electrically-driven, mechanical, refrigerated air conditioner.
- Applied: January 21, 1960
- Status date: April 26, 2006
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-765](https://openairdocs.org/tcds/A-765)
- Certificate PDF: https://openairdocs.org/files/sha256/2b/5a/2b5a81f918931198af9db123232db1a1abfe76398af63e87129deb5e43f5b15d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A7525F82AA9FBE2586257172004E4296.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4-1076

## ADs that name it (0)

None.

## Approved models (1)

- Raytheon Aircraft Company E18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))

## 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 Rotorcraft Enterprises, LLC 20 South Camino Blanco Road Wickenburg, Arizona 85390 Part CAR 3 of the Civil Air Regulations.

765 Beech E-18S Description of Type Design Change: Installed electrically driven, mechanical, refrigerated air conditioner per drawing Numbers AT-20001, AT-20002, AT-20003, AT-20004, and AT-20005.

Compressor unit is located in baggage compartment, condenser unit is located in fuselage compartment aft of baggage compartment, and evaporator unit is located in the cabin aft of the main spar. Controls are located in the base of the control pedestal.

Limitations and Conditions: The approval of this change in type design applies basically to Beech Model E-18S aircraft only. This approval should not be extended to other specific airplanes of this model on which other previously approved modifications are incorporated, unless it is determined that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that airplane. Subsequent Beech Model E-18S airplanes which incorporate this Air Conditioner Installation must not have a total electrical load in excess of 80% of the total generator capacity. 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 21, 1960

Date of issuance: March 25, 1960

Date reissued: January 27, 2006; April 26, 2006

( Signature)

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

## Every issue (2)

- April 26, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/2b/5a/2b5a81f918931198af9db123232db1a1abfe76398af63e87129deb5e43f5b15d)
- January 27, 2006: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/43/cc/43cc6830589117f64864558188fe843595e2ca8c71950cb2d6e3675fb267af74)

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