# STC SR11810SE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Helicopter Transport Services LLC, United States
- Description: Installation of Helicopter Transport Services, LLC External Load Indicating System
- Applied: January 13, 2020
- Status date: January 30, 2025
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29
- Data sheets: [TCDS R00009SE](https://openairdocs.org/tcds/R00009SE), [TCDS H16NM](https://openairdocs.org/tcds/H16NM), [TCDS H14NM](https://openairdocs.org/tcds/H14NM), [TCDS H6EA](https://openairdocs.org/tcds/H6EA)
- Certificate PDF: https://openairdocs.org/files/sha256/ff/7d/ff7d94107e39941e7450e96431f3641b4cb77bbc94bb51f82ae7c1b88240d09e
- Approved model list and other attachments: [SR11810SE_AML.pdf](https://openairdocs.org/files/sha256/7b/13/7b13c38f4cfe33424b29d0cf666fbe65f169ffe34b34c9883bc8b13f11529bee)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168131515120250204161050.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR11810SE

## ADs that name it (0)

None.

## Approved models (5)

- Erickson Incorporated DBA Erickson Air-Crane S-64E ([TCDS H6EA](https://openairdocs.org/tcds/H6EA))
- Erickson Incorporated DBA Erickson Air-Crane S-64F ([TCDS H6EA](https://openairdocs.org/tcds/H6EA))
- Helicopter Transport Services LLC CH-54A ([TCDS H16NM](https://openairdocs.org/tcds/H16NM))
- Helicopter Transport Services LLC CH-54A ([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.

SR11810SE Helicopter Transport Services, LLC 14497 Keil Rd NE Aurora, OR 97002 Part 29 Title 14 CFR See AML SR11810SE See AML SR11810SE See AML SR11810SE Approval of this change in type design applies to the rotorcraft listed on AML SR11810SE only.

The installation should not be incorporated on any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration of the aircraft will not introduce any adverse effect the airworthiness of the aircraft.(Cont. on page 3.)

01/13/2020 01/30/2025 3 Installation of Helicopter Transport Services, LLC External Load Indicating System in accordance with the Master Drawing List (MDL) OAS-620-MDL, Revision H, dated February 22, 2024, as listed on the AML. Maintained in accordance with the Instructions for Continued Airworthiness (ICA) OAS-620-29.1529, Revision IR, dated July 6, 2022. (Continued on Page 3)

SR11810SE 3

SR11810SE Description of Design Change (continued from Page 1):

1. Operated in accordance with Rotorcraft Flight Manual Supplement (RFMS), OAS-620-29.1581, Revision IR, dated October 25, 2024, as listed on AML

Limitations and Conditions (continued from Page 1):

1. A copy of this certificate, the AML SR11810SE, the ICA, the Installation Manual, Document Number 620-E1-001, and the RFMS, must be maintained as part of the permanent records for the modified aircraft.

2. Operational approval for external load operations must be granted by the local Aviation Authority.

3. If the holder permits another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

-------------------------------------------------End--------------------------------------------------------------

### SR11810SE_AML.pdf

FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR11810SE FOR Helicopter Transport Services, LLC External Load Indicating System

ISSUE DATE: January 30, 2025

Page 1 of 1

**ITEM AIRCRAFT /**

**ROTORCRAFT MAKE**

**AIRCRAFT /**

**ROTORCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**AIRCRAFT /**

**ROTORCRAFT FLIGHT**

**MANUAL SUPPLEMENT**

**FAA APPROVED**

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

1. Helicopter Transport Services, LLC CH-54A R00009SE Part 29 OAS-620-

**29.1581 IR OAS-620- MDL H**

2. Helicopter Transport Services, LLC CH-54A H16NM Part 29 OAS-620-

**29.1581 IR OAS-620- MDL H**

3. Helicopter Transport Services, LLC CH-54B H14NM Part 29 OAS-620-

**29.1581 IR OAS-620- MDL H**

4. Erickson Air Crane S-64E S-64F H6EA Part 29 OAS-620-

29.1581 IR OAS-620- MDL H * Or later FAA Approved Revision

FAA Approved:

for Manager, West Certification Branch AMENDED:

REISSUED:

## Every issue (1)

- January 30, 2025: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ff/7d/ff7d94107e39941e7450e96431f3641b4cb77bbc94bb51f82ae7c1b88240d09e), [SR11810SE_AML.pdf](https://openairdocs.org/files/sha256/7b/13/7b13c38f4cfe33424b29d0cf666fbe65f169ffe34b34c9883bc8b13f11529bee)

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