# STC SR02303SE

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Helicopter Transport Services LLC, United States
- Description: Instruction for changing to alternative lubricant
- Applied: June 22, 2013
- Status date: March 31, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H16NM](https://openairdocs.org/tcds/H16NM), [TCDS R00009SE](https://openairdocs.org/tcds/R00009SE)
- Certificate PDF: https://openairdocs.org/files/sha256/ea/04/ea046d807a467c2155b9d30c9af396fa89f4f6f7e5a73fc065fec93db3f004ff
- Approved model list and other attachments: [AML_SR02303SE.pdf](https://openairdocs.org/files/sha256/d0/91/d0919afdc342b4b01225ec13139ff27a41a4a938247d53a0b308ff2f478c10f1)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ABA6627FBC96D3FC86257CB30045D982.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR02303SE

## ADs that name it (0)

None.

## Approved models (2)

- 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))

## 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.

Number SR02303SE

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

Part 29 of the Federal Aviation Regulations.

Original ProductType Certificate Number: * See attached Federal Aviation Administration (FAA) Make: Approved Model List (AML) SR02303SE for approved Model: rotorcraft models and applicable airworthiness regulations

Description of the Type Design Change: Instruction for changing to alternative lubricant and use of these for continued airworthiness in accordance with Helicopter Transport Services Document, DS-HT54LUB-SUPL-01, Revision IR, dated January 24, 2014, or later FAA-approved revision. This supplement shall be used to identify and change lubricants currently in Instructions for Continued Airworthiness identified in the type certificate data sheets for these rotorcraft.

Limitations and Conditions: Approval of this change in type design applies to the rotorcraft listed on AML SR02303SE only. This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the relationship between this change and other previously approved modifications will introduce no adverse effect upon the airworthiness of that rotorcraft. A copy of this certificate, AML SR02303SE, and Helicopter Transport Services Document, DS-HT54LUB-SUPL-01, Revision IR, dated January 24, 2014, or later FAA-approved revision must be maintained as part of the permanent records for the modified 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: June 22, 2013 Date reissued:

Date of issuance: February 13, 2014 Date amended:

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

### AML_SR02303SE.pdf

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR02303SE FOR**

USE OF ALTERNATIVE LUBRICANTS ISSUE DATE: February 13, 2013

Page 1 of 1

**ITEM AIRCRAFT MAKE**

**AIRCRAFT MODEL**

**ORIGINAL TC NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**FAA APPROVED**

**AIRCRAFT FLIGHT**

**MANUAL SUPPLEMENT**

FAA APPROVED DOCUMENT AML REV DATE Number Revision* Document Revision*

1. Helicopter Transport Services CH-54A H16NM 14 CFR Part 29 N/A N/A DS-HT54LUB-SUPL-01 Rev IR 1/24/2014

2. Helicopter Transport Services CH-54A R00009SE 14 CFR Part 29 N/A N/A DS-HT54LUB-SUPL-01 Rev 1 3/31/2014 * Or later FAA Approved Revision

FAA Approved:

Manager, Seattle Aircraft Certification Office AMENDED: March 31, 2014 REISSUED:

## Every issue (2)

- March 31, 2014: Amended, Current. [certificate](https://openairdocs.org/files/sha256/ea/04/ea046d807a467c2155b9d30c9af396fa89f4f6f7e5a73fc065fec93db3f004ff), [AML_SR02303SE.pdf](https://openairdocs.org/files/sha256/d0/91/d0919afdc342b4b01225ec13139ff27a41a4a938247d53a0b308ff2f478c10f1)
- February 13, 2014: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/ea/04/ea046d807a467c2155b9d30c9af396fa89f4f6f7e5a73fc065fec93db3f004ff), [SR02303SE_AML.pdf](https://openairdocs.org/files/sha256/45/a3/45a3fad1d89444e95c99ae2c4ffde852c8d2c7df783a303536ae5c8d145558dd)

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