# STC SH4061NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Air Comm Corporation, United States
- Description: Installation of Pneumatic Door Actuators
- Applied: June 5, 1989
- Status date: November 24, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H1CE](https://openairdocs.org/tcds/H1CE)
- Certificate PDF: https://openairdocs.org/files/sha256/e9/c3/e9c38cb16d3c1f9ddbccd436fba80c7649edb498bac116337ce77165090be5fb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A6B1554ABC72ABEF86257DF8005B656F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH4061NM

## ADs that name it (0)

None.

## Approved models (6)

- The Enstrom Helicopter Corporation 280C ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation 280F ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation 280FX ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation F-28A ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation F-28C ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))
- The Enstrom Helicopter Corporation F-28F ([TCDS H1CE](https://openairdocs.org/tcds/H1CE))

## 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 States of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate Number SH4061NM

Date of application: June 5, 1989 Date reissued: November 24, 2014 Date of issuance: November 9, 1989 Date amended: January 24, 1991

Todd Dixon (Signature) Manager, Denver Aircraft Certification Office Northwest Mountain Region (Title)

This certificate, issued to Air Comm Corporation 1575 West 124th Ave Westminster, CO 80234 Part 6 of the Civil Air Regulations.

Original ProductType Certificate Number: H1CE Make: Enstrom Model: 280C, 280F, 280FX, F-28A, F-28C, F-28F Description of the Type Design Change:

Installation of Pneumatic Door Actuators in accordance with FAA Approved Drawing List DL– 280DA, Rev A, FAA approved on November 9, 1989 or later FAA approved revision.

1. The following placard must be displayed on each Actuator “REMOVE WHEN DOOR IS REMOVED”

2. Approval of this change in type design applies to the model of aircraft listed above only.

3. Compatibility of this design change with previously approved alterations must be determined by the installer.

4. 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.

5. A copy of this certificate and the appropriate flight manual supplement as listed above must be maintained as part of the permanent record for the altered aircraft.

## Every issue (2)

- November 24, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e9/c3/e9c38cb16d3c1f9ddbccd436fba80c7649edb498bac116337ce77165090be5fb)
- January 24, 1991: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/5d/8b/5d8bc529b2e21510fe4399807433c9a2eddd9f216a6aca368f0220bf116fbf99)

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