# STC SR02036SE

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Helicopter Transport Services LLC, United States
- Description: Modification of main rotor blade part number 6415-20601-041, -042, and -043
- Applied: June 5, 2003
- Status date: January 9, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H14NM](https://openairdocs.org/tcds/H14NM)
- Certificate PDF: https://openairdocs.org/files/sha256/4e/db/4edbe697917515bceff3cf9916e6f997bc85fbe5d636c57056b1c29a7bb5ccae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/46E2E8989D055FBB86257C5C0073D131.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR02036SE

## ADs that name it (0)

None.

## Approved models (1)

- Helicopter Transport Services Inc. 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.

Number SR02036SE

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: H14NM Make: HTSI Model: CH-54B

Description of the Type Design Change: Modification of main rotor blade Part Number 6415-20601-041, -042, and -043 in accordance with Master Drawing List DM0326-3, Revision A, dated April 16, 2008, or later Federal Aviation Administration (FAA) approved revision. Note that after the modification the blade is re-identified to Part Number HTS6415-20601-041, -042, or -043. Retirement life for the modified main rotor blade, Part Number HTS6415-20601-041, -042, or -043, is 20,000 hours total time in service from original manufacture.

Limitations and Conditions: This approval should not be extended to other rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. Inspect and maintain the HTS6415-20601-041, -042, and -043 rotor blades per Instructions for Continued Airworthiness (ICA) DM0326-10, Revision A, dated November 17, 2009, or later FAA-accepted revision.

A copy of this certificate and ICA 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 product, the holder shall give the other person written evidence of that permission.

Date of application: June 5, 2003 Date reissued: January 9, 2014 Date of issuance: November 20, 2009 Date amended:

**FAA FORM 8110-2(10-68 PAGE 1 OF 2 PAGES**

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

## Every issue (2)

- January 9, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/4e/db/4edbe697917515bceff3cf9916e6f997bc85fbe5d636c57056b1c29a7bb5ccae)
- November 20, 2009: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/0e/38/0e383c692b343f0a5d1923bb11b5b2e455b13ac7a5ec772773918645b74ff456)

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