# STC SR02355LA

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Sandel Avionics LLC, United States
- Description: Installation of Sandel Avionics ST3400H Helicopter Terrain Awareness and Warning System (HTAWS).
- Applied: September 15, 2009
- Status date: June 23, 2021
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H4SW](https://openairdocs.org/tcds/H4SW)
- Certificate PDF: https://openairdocs.org/files/sha256/36/e2/36e23da2e22ea024ec0b88ac9c5c5a5fa8fc9638eb608431b740b3e3c2178b27
- Approved model list and other attachments: [AML SR02355LA.pdf](https://openairdocs.org/files/sha256/09/cb/09cb009556982c5649dd112528a4abf8502e14f5a105fe02ca79b981f213ae1b)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/234EC09F849A1BE08625875D00667288.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR02355LA

## ADs that name it (0)

None.

## Approved models (3)

- Bell Helicopter Textron Inc. 412 ([TCDS H4SW](https://openairdocs.org/tcds/H4SW))
- Bell Helicopter Textron Inc. 412CF ([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 (3/21) SUPERSEDES PREVIOUS EDITION Number SR02355LA

This Certificate issued to Sandel Avionics, Inc.

1370 Decision Street, Suite D Vista, CA 92081 Part 29 of the Federal Aviation Regulations.

(*Certification basis is set forth in Type Certificate Data Sheet).

*See attached FAA Approved Model List (AML) No. SR02355LA for list of approved aircraft models and applicable airworthiness regulations.

Description of Type Design Change: Installation of Sandel Avionics ST3400H Helicopter Terrain Awareness Warning System (HTAWS), in accordance with FAA Approved Sandel Avionics “Master Drawing List”, Document No. 82046-AMLSTC29-01, Rev. “A”, dated May 6, 2011, or later FAA approved revision. FAA approved Sandel Avionics Rotorcraft Flight Manual Supplement to the Bell 412EP Flight Manual, Document No.

82046-STC29-09, Rev. "ORIG," dated June 17, 2011, or later FAA approved revision is required as part of this installation.

Additional FAA approved Master Drawing List (MDL), Rotorcraft Flight Manual Supplement (RFMS) and later approved revisions are identified in attached AML

Limitations and Conditions: The approval should not be incorporated in any rotorcraft unless it is determined that the interrelations between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the rotorcraft.

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 : September 15, 2009

Date of issuance : June 17, 2011

Date reissued : June 23, 2021

Date amended : February 7, 2014

(Signature) Manager, Technical & Administrative Support Section Aviation Safety Los Angeles ACO Branch

FAA Form 8110-2 (03/21) SUPERSEDES PREVIOUS EDITION Number SR02355LA

### AML SR02355LA.pdf

Approved Model List (AML) STC Number SR02355LA

Sandel Avionics For Installation of a Sandel Avionics HeliTAWS (Helicopter Terrain Awareness Warning System) ST3400H

Issued Date: February 7, 2014

Item Aircraft Make Aircraft Model Type Certificate Number Certificate Basis for Alteration FAA Approved Master Drawing List FAA Approved Rotocraft Flight Manual Supplement AML Approval Date Number Revision/Date Number Revision/Date

1 Bell Helicopter 412, EP, CF H4SW 14 CFR Part 29 82046-AMLSTC29-01 Rev. E /12-13-13 82046- AMLSTC29-09 ORIG/1-14-14 February 7, 2014

FAA Approved:________________________________ Manager, Systems and Equipment Los Angeles Aircraft Certification Office

## Every issue (3)

- June 23, 2021: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/36/e2/36e23da2e22ea024ec0b88ac9c5c5a5fa8fc9638eb608431b740b3e3c2178b27), [AML SR02355LA.pdf](https://openairdocs.org/files/sha256/09/cb/09cb009556982c5649dd112528a4abf8502e14f5a105fe02ca79b981f213ae1b)
- February 7, 2014: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/9d/00/9d00cfeae6a3e95f53ff4fccf4a306e7cc69d4f547bef09f53fa47ae4171fca0), [SR02355LA_AML.pdf](https://openairdocs.org/files/sha256/a6/8e/a68e2da62b9dbbdc78f8d523e9a75c17e3321e41244840e30310e18e1058a161)
- June 17, 2011: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/4f/fd/4ffd63a6529ae092272dfbb0dbff222068b97b9a763e2bce46da348c083efbaa)

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