# STC SH4056NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Dart Aerospace USA Inc., United States
- Description: Installation of pneumatic door actuators.
- Applied: July 14, 1989
- Status date: August 22, 2023
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29
- Data sheets: [TCDS H1SW](https://openairdocs.org/tcds/H1SW), [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/32/7f/327f8d45d10743a20c128e4d8e7aa99c129b67dff41e52913a4ed226168323fd
- Approved model list and other attachments: [SH4056NM_AML.pdf](https://openairdocs.org/files/sha256/d6/d7/d6d7d9d9675e9a61bebeb3999f54f413f21b1ee2dfc0933474ef79897960bc73)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148556414120231006155210.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH4056NM

## ADs that name it (0)

None.

## Approved models (6)

- Bell Helicopter Textron Inc. 204B ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 205A ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 205A-1 ([TCDS H1SW](https://openairdocs.org/tcds/H1SW))
- Bell Helicopter Textron Inc. 212 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron Inc. 412EP ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))

## 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 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

Page 1 of 2 SH4056NM Dart Aerospace USA, Inc 3845 NE 30th Avenue Hillsboro, OR 97124 Part * the * Regulations * * *See attached FAA Approved Model List (AML) No. SH4056NM of list approved rotorcraft models and applicable airworthiness regulations.

Installation of Pneumatic Door Actuators in accordance with Paravion Technology, Inc. Master Drawing List Report No.

212DA-100DL, Revision A, dated August 29, 1996, or DL-212PDO-100, Revision B, dated April 16, 2001, or later FAA approved revisions.

July 14, 1989 August 22, 2023 August 30, 1989 March 14, 1997; July 2, 2001 for Manager, West Certification Branch

1. This approval should not be extended rotorcraft 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, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft.

2. A copy of this Certificate must be maintained as part of the permanent records of the modified rotorcraft.

3. 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.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

Page 2 of 2 SH4056NM

### SH4056NM_AML.pdf

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SH4056NM FOR Installation of Pneumatic Door Actuators ISSUE DATE: August 30, 1989

Page 1 of 1

**ITEM ROTORCRAFT MAKE ROTORCRAFT MODEL**

ORIGINAL TC NUMBER Certification Basis

1. Bell Textron Inc 204B H1SW CAR 7

2. Bell Textron Inc. 205A H1SW CAR 7

3. Bell Textron Inc. 205A-1 H1SW CAR 7

4. Bell Textron Inc. 212 H4SW 14 CFR Part 29

5. Bell Textron, Inc. 412 H4SW 14 CFR Part 29

6. Bell Textron Inc. 412EP H4SW 14 CFR Part 29

FAA Approved:

for Manager, West Certification Branch AMENDED: March 14, 1997; July 2, 2001 REISSUED: August 22, 2023

## Every issue (2)

- August 22, 2023: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/32/7f/327f8d45d10743a20c128e4d8e7aa99c129b67dff41e52913a4ed226168323fd), [SH4056NM_AML.pdf](https://openairdocs.org/files/sha256/d6/d7/d6d7d9d9675e9a61bebeb3999f54f413f21b1ee2dfc0933474ef79897960bc73)
- July 2, 2001: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/40/5c/405c05e3da82d582156f6518721907a5f0f3e45bc61e888ef95ba28b48e23be2)

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