# STC SR09913AC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Helicopter Transport Services LLC, United States
- Description: Installation of Composite Main Rotor Blade
- Applied: September 30, 2019
- Status date: December 16, 2020
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H14NM](https://openairdocs.org/tcds/H14NM), [TCDS H16NM](https://openairdocs.org/tcds/H16NM), [TCDS R00009SE](https://openairdocs.org/tcds/R00009SE)
- Certificate PDF: https://openairdocs.org/files/sha256/1e/35/1e355d4b1d3db0a7ef714822a1c28125b107ba3a2a7a4f441316fc9a2f285589
- Approved model list and other attachments: [AML_SR09913AC.pdf](https://openairdocs.org/files/sha256/b8/c1/b8c1c1d5e166fbc5f65fcf89c0c18d1566fe8f4deeb87a4869c1ff692b39aba4)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/78FA7F2C110515D78625871A005A6687.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR09913AC

## ADs that name it (0)

None.

## Approved models (3)

- Helicopter Transport Services LLC CH-54A (H16NM) ([TCDS H16NM](https://openairdocs.org/tcds/H16NM))
- Helicopter Transport Services LLC CH-54A (R00009SE) ([TCDS R00009SE](https://openairdocs.org/tcds/R00009SE))
- Helicopter Transport Services LLC CH-54B ([TCDS H14NM](https://openairdocs.org/tcds/H14NM))

## 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 Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SR09913AC Helicopter Transport Services 14497 Keil Rd NE Aurora, OR 97002 Part 29* the Federal Aviation Regulations See AML See AML See AML This project is for the installation of Composite Main Rotor Blade in accordance with Erickson Incorporated Master Document List Number 2482, Revision A, dated 5/22/2020, or later FAA approved revision. See AML of this STC for applicable Rotorcraft Flight Manual Supplement and Instructions for Continued Airworthiness.

(See continuation sheet 3 of 3) September 30, 2019 December 16, 2020 July 1, 2020 Jim Grigg Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service 3

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

SR09913AC 3

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

SR09913AC Date of Issuance: July 1, 2020 Date of Reissuance: December 16, 2020

1. The installer must determine whether this design change is compatible with previously approved modification.

2. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission.

Certification Basis:

The certification basis for the Composite Main Rotor Blade installation includes the following 14 CFR Part 29 regulations at the latest amendments 29-0 through 29-42:

29.33(a) & (c), 29.71, 29.73, 29.151, 29.177, 29.251, 29.301, 29.303, 29.305, 29.307,

29.321, 29.337, 29.341, 29.351, 29.361, 29.547, 29.571, 29.601, 29.602, 29.603,

29.605, 29.607, 29.609, 29.6100, 29.611, 29.613, 29.623, 29.625, 29.629, 29.653,

29.659, 29.661, 29.663, 29.1529, 29.1541, 29.1585(a), (g)

-END-

### AML_SR09913AC.pdf

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML)**

STC No. SR09913AC Date of Issuance: July 1, 2020 Date Reissued: December 16, 2020

Helicopter Transport Services 14497 Keil Rd NE Aurora, OR 97002

Instructions for Continued Airworthiness Item Aircraft Make Aircraft Model Type Certificate Number Certification Basis Flight Manual Supplement Document # Revision No. and Date

1. Helicopter Transport Services CH-54A H16NM See continuation sheet 3 of 3 of STC certificate

HTS-FMS-CMB- 01A, Rev. IR, or later FAA approved revision is required HTS-MMS-CMB-01A Rev. IR, dated 4/10/2020, or later revision is required.

2. Helicopter Transport Services CH-54A R00009SE See continuation sheet 3 of 3 of STC certificate

HTS-FMS-CMB- 01A, Rev. IR, or later FAA approved revision is required.

HTS-MMS-CMB-01A Rev. IR, dated 4/10/2020, or later revision is required.

3. Helicopter Transport Services CH-54B H14NM See continuation sheet 3 of 3 of STC certificate

HTS-FMS-CMB- 01B, Rev. IR, or later FAA approved revision is required HTS-MMS-CMB-01B Rev. IR, dated 8/31/2020, or later revision is required.

Items 1 & 2: Master Document List, EAC Document, Number 2482, Revision A, dated 5/22/2020, or later FAA approved revision.

Item 3: Master Document List, EAC Document, Number 2512, Revision B, dated 11/16/2020, or later FAA approved revision.

FAA Approved: ___________________________________ Jim Grigg Manager, Fort Worth ACO Branch Compliance & Airworthiness Division Aircraft Certification Service

Date: ___________________________________

## Every issue (1)

- December 16, 2020: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/1e/35/1e355d4b1d3db0a7ef714822a1c28125b107ba3a2a7a4f441316fc9a2f285589), [AML_SR09913AC.pdf](https://openairdocs.org/files/sha256/b8/c1/b8c1c1d5e166fbc5f65fcf89c0c18d1566fe8f4deeb87a4869c1ff692b39aba4)

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