# STC SR01209SE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Helicopter Transport Services LLC, United States
- Description: Installation of Replacement Electric Starter for Auxiliary Power Unit
- Applied: March 12, 2003
- Status date: September 24, 2018
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21
- Data sheets: [TCDS H14NM](https://openairdocs.org/tcds/H14NM), [TCDS R00009SE](https://openairdocs.org/tcds/R00009SE)
- Certificate PDF: https://openairdocs.org/files/sha256/61/51/6151c9d7ce75ea4389c4d4c9a117917acd29eec1092b3662dd08e76a10910b3e
- Approved model list and other attachments: [SR01209SE_AML.pdf](https://openairdocs.org/files/sha256/32/bf/32bfb56853ea09fd870751440f9dd945a50f0304ff065a54c862ac849a064b6b)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/789F3266B4E96135862583140056070E.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR01209SE

## ADs that name it (0)

None.

## Approved models (2)

- Helicopter Transport Services Inc. CH-54B ([TCDS H14NM](https://openairdocs.org/tcds/H14NM))
- Helicopter Transport Services LLC CH-54A ([TCDS R00009SE](https://openairdocs.org/tcds/R00009SE))

## 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.

Un ited S tates of Am erica Department of Transportation - Federal Aviation Administration Supplemental Type Certificate

Number SR01209SE

This certificate, issued to Helicopter Transport Services, LLC 14497 Keil Road NE Aurora, OR 97002

Part * of the * Regulations.

Original ProductType Certificate Number: * See attached Federal Aviation Administration (FAA) Make: Approved Model List (AML) SR01209SE for approved Model: aircraft models and applicable airworthiness regulations

Description of the Type Design Change: Installation of Replacement Electric Starter for Auxiliary Power Unit in accordance with Helicopter Transport Services, Inc. (HTSI) Master Drawing List No. HTS -AESMDL-001, Revision A, dated January 8, 2018, or later Federal Aviation Administration (FAA) approved revision. This modification must be maintained in accordance with HTSI Maintenance Manual Supplement Document No. HTS -AESICA-001, dated January 8, 2018, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to rotorcraft models specified on AML SR01209SE only. This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this Certificate, AML, and Maintenance Manual Supplement must be maintained as part of the permanent record of the modified rotorcraft.

If the holder agrees to permit another person to use this certificate to alter the prod uct, the holder shall give the other person written evidence of that permission.

Date of application: March 12, 2003 Date reissued: January 9, 2014 Date of issuance: May 13, 2003 Date amended: September 13, 2018; September 24, 2018

FAA FORM 8110-2 (5/14) PAGE 1 OF 2 PAGES By direction of the Administrator

(Signature)

Manager, Seattle ACO Branch (Title)

### SR01209SE_AML.pdf

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR01209SE FOR Electric Starter for Auxiliary Power Unit ISSUE DATE: September 24, 2018

Page 1 of 1

**ITEM AIRCRAFT /**

**ROTORCRAFT MAKE**

**AIRCRAFT /**

**ROTORCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATIO**

**N BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**MAINTANANCE MANUAL**

**SUPPLEMENT**

**FAA APPROVED**

MASTER DRAWING LIST AML REV DATE Number Revision* Drawing Revision*

1. Helicopter Transport Services

CH-54B

H14NM

Part 21.25(a)(2)

**HTS-AESICA-001 IR 2/13/2002 HTS-**

**AESMDL- 001 A 1/8/2018**

2. Helicopter Transport Services

CH-54A

H16NM

Part 21.25(a)(2)

**HTS-AESICA-001 A 1/8/2018 HTS-**

**AESMDL- 001 A 1/8/2018**

* Or later FAA Approved Revision

FAA Approved:

Manager, Seattle ACO Branch AMENDED:

REISSUED:

## Every issue (4)

- September 24, 2018: Amended, Current. [certificate](https://openairdocs.org/files/sha256/61/51/6151c9d7ce75ea4389c4d4c9a117917acd29eec1092b3662dd08e76a10910b3e), [SR01209SE_AML.pdf](https://openairdocs.org/files/sha256/32/bf/32bfb56853ea09fd870751440f9dd945a50f0304ff065a54c862ac849a064b6b)
- September 13, 2018: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/b8/1c/b81cae3984a23587a74033b754b3d15cf25ab44af6093e32db75e8bef9c18c79)
- January 9, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/e7/8b/e78b9b267837c146da6ae027026cb0b4713e52350f21d48cbad5b9f3117d4915)
- May 13, 2002: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/85/76/85762db235d380acb8247ecebdee488124738d317b9d33e04fb8397d598d863c)

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