# STC SR02753LA

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aerometals Inc., United States
- Description: Installation of an engine Inlet Barrier Filter (IBF)
- Applied: August 29, 2019
- Status date: October 5, 2026
- Product: Aircraft, Rotorcraft
- Certification basis: Part 29, Part 21
- Data sheets: [TCDS R00005RC](https://openairdocs.org/tcds/R00005RC), [TCDS R0012DE](https://openairdocs.org/tcds/R0012DE), [TCDS R00021LA](https://openairdocs.org/tcds/R00021LA), [TCDS R00020AT](https://openairdocs.org/tcds/R00020AT), [TCDS R00026LA](https://openairdocs.org/tcds/R00026LA), [TCDS R00019AT](https://openairdocs.org/tcds/R00019AT), [TCDS R00028LA](https://openairdocs.org/tcds/R00028LA), [TCDS R00054SE](https://openairdocs.org/tcds/R00054SE), [TCDS R00058SE](https://openairdocs.org/tcds/R00058SE), [TCDS R00003AC](https://openairdocs.org/tcds/R00003AC), [TCDS R00020LA](https://openairdocs.org/tcds/R00020LA), [TCDS R00027LA](https://openairdocs.org/tcds/R00027LA), [TCDS H5NE](https://openairdocs.org/tcds/H5NE), [TCDS R00025LA](https://openairdocs.org/tcds/R00025LA), [TCDS R00022LA](https://openairdocs.org/tcds/R00022LA), [TCDS R00052SE](https://openairdocs.org/tcds/R00052SE), [TCDS R00023LA](https://openairdocs.org/tcds/R00023LA), [TCDS R00029LA](https://openairdocs.org/tcds/R00029LA), [TCDS R00035LA](https://openairdocs.org/tcds/R00035LA), [TCDS R00113SE](https://openairdocs.org/tcds/R00113SE) and 3 more
- Certificate PDF: https://openairdocs.org/files/sha256/43/bc/43bc0428caa9ed7a0623d48b99d5420b18de6b73dca1f28af0a28ae9d90aca4e
- Approved model list and other attachments: [SR02753LA_AML.pdf](https://openairdocs.org/files/sha256/4f/07/4f07e8eb45e7fac8d7a58e2f1ff6d5be348741c209007d2585cc864ef1e00a8d)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188319831120261019160022.0001
- DRS record last changed: October 19, 2026
- Page: https://openairdocs.org/stc/SR02753LA

## ADs that name it (0)

None.

## Approved models (40)

- ACE Aeronautics LLC UH-60A ([TCDS R00005RC](https://openairdocs.org/tcds/R00005RC))
- ACE Aeronautics LLC UH-60L ([TCDS R00005RC](https://openairdocs.org/tcds/R00005RC))
- Air Resources Helicopters Inc. UH-60A ([TCDS R00116LA](https://openairdocs.org/tcds/R00116LA))
- Air Resources Helicopters Inc. UH-60L ([TCDS R00116LA](https://openairdocs.org/tcds/R00116LA))
- BHI H60 Helicopters LLC BHI H60 (UH-60A) ([TCDS R0012DE](https://openairdocs.org/tcds/R0012DE))
- BHI Productions LLC UH-60A ([TCDS R00024AT](https://openairdocs.org/tcds/R00024AT))
- BHI Productions LLC UH-60L ([TCDS R00024AT](https://openairdocs.org/tcds/R00024AT))
- Billings Flying Service Inc UH-60A ([TCDS R00021LA](https://openairdocs.org/tcds/R00021LA))
- Blackhawk Mission Equipment UH-60A ([TCDS R0012DE](https://openairdocs.org/tcds/R0012DE))
- CAPITOL HELICOPTERS INC HH-60L ([TCDS R00026LA](https://openairdocs.org/tcds/R00026LA))
- CAPITOL HELICOPTERS INC UH-60A ([TCDS R00026LA](https://openairdocs.org/tcds/R00026LA))
- Carson Helicopters Inc. UH-60A ([TCDS R00020AT](https://openairdocs.org/tcds/R00020AT))
- Central Copters Inc. HH-60L ([TCDS R00029LA](https://openairdocs.org/tcds/R00029LA))
- Delta Enterprise EH-60A ([TCDS R00019AT](https://openairdocs.org/tcds/R00019AT))
- Delta Enterprise UH-60A ([TCDS R00019AT](https://openairdocs.org/tcds/R00019AT))
- Delta Enterprise LLC EH-60A ([TCDS R00019AT](https://openairdocs.org/tcds/R00019AT))
- Delta Enterprise LLC UH-60A ([TCDS R00019AT](https://openairdocs.org/tcds/R00019AT))
- Delta Enterprise LLC UH-60L ([TCDS R00019AT](https://openairdocs.org/tcds/R00019AT))
- H-60 LLC UH-60A ([TCDS R00113SE](https://openairdocs.org/tcds/R00113SE))
- H-60 LLC UH-60L ([TCDS R00113SE](https://openairdocs.org/tcds/R00113SE))
- Hagglund Helicopters LLC UH-60A ([TCDS R00031LA](https://openairdocs.org/tcds/R00031LA))
- Hallux Aerospace LLC UH-60A ([TCDS R00035LA](https://openairdocs.org/tcds/R00035LA))
- Hallux Aerospace LLC UH-60L ([TCDS R00035LA](https://openairdocs.org/tcds/R00035LA))
- Heliqwest International Inc. EH-60A ([TCDS R00028LA](https://openairdocs.org/tcds/R00028LA))
- Heliqwest International Inc. UH-60A ([TCDS R00028LA](https://openairdocs.org/tcds/R00028LA))
- High Performance Helicopters Corp. UH-60A ([TCDS R00054SE](https://openairdocs.org/tcds/R00054SE))
- Northwest Rotorcraft LLC UH-60A ([TCDS R00058SE](https://openairdocs.org/tcds/R00058SE))
- PJ Helicopters Inc UH-60A ([TCDS R00020LA](https://openairdocs.org/tcds/R00020LA))
- Pickering Aviation Inc. EH-60A ([TCDS R00003AC](https://openairdocs.org/tcds/R00003AC))
- Pickering Aviation Inc. UH-60A ([TCDS R00003AC](https://openairdocs.org/tcds/R00003AC))
- Pickering Aviation Inc. UH-60L ([TCDS R00003AC](https://openairdocs.org/tcds/R00003AC))
- Reeder Flying Service Inc. UH-60A ([TCDS R00027LA](https://openairdocs.org/tcds/R00027LA))
- SIXTYHAWK TC LLC EH-60A ([TCDS R00025LA](https://openairdocs.org/tcds/R00025LA))
- SIXTYHAWK TC LLC HH-60L ([TCDS R00025LA](https://openairdocs.org/tcds/R00025LA))
- SIXTYHAWK TC LLC UH-60A ([TCDS R00025LA](https://openairdocs.org/tcds/R00025LA))
- SKYDANCE BLACKHAWK OPERATIONS LLC UH-60A ([TCDS R00022LA](https://openairdocs.org/tcds/R00022LA))
- Sikorsky Aircraft Corporation S-70M ([TCDS H5NE](https://openairdocs.org/tcds/H5NE))
- Timberline Helicopters Inc. UH-60A ([TCDS R00052SE](https://openairdocs.org/tcds/R00052SE))
- Timberline Helicopters Inc. UH-60L ([TCDS R00052SE](https://openairdocs.org/tcds/R00052SE))
- Unical Air Inc. UH-60A ([TCDS R00023LA](https://openairdocs.org/tcds/R00023LA))

## 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.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 1 of 3

Number: SR02753LA Aerometals Inc.

3920 Sandstone Drive El Dorado Hills, California 95762 Part * of Federal Aviation Regulations.

Original Product Make: * Type Certificate Number: * * See Approved Model List (AML) SR02753LA for approved aircraft models and applicable airworthiness regulations. Model: *

Description of Type Design Change: Installation of an engine Inlet Barrier Filter (IBF) system in accordance with the FAA approved Master Drawing List (MDL), listed on AML SR02753LA, dated April 16, 2021, or later FAA approved revision. Instructions for Continued Airworthiness (ICA) and FAA Approved Rotorcraft Flight Manual Supplement (RFMS) listed on the FAA Approved AML SR02753LA are required and must be made available to the operator at the time of installation.

Limitations and Conditions: Approval of this modification applies only to the model aircraft listed in AML SR02753LA. This approval should not be extended to other specific aircrafts of this model series on which other approved modification are incorporated, unless it is determined that the interrelations between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of the aircraft. 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. A copy of this STC must be included in the permanent records of each aircraft modified in accordance with STC. See continuation sheet 3.

Date of Application: August 29, 2019 Date Reissued:

Date of Issuance: April 16, 2021 Date Amended:

Title: Manager, Propulsion Section Los Angeles ACO Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 2 of 3

Number: SR02753LA

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate FAA Form 8110-2 (4/20) SUPERSEDES PREVIOUS EDITION Page 3 of 3

(Continuation Sheet) Number: SR02753LA

Effective: April 16, 2021

Limitations and Conditions – continued:

This STC is limited to those restricted category helicopters that are used exclusively for the special purposes listed in 14 CFR 21.25 (b)(1),(2) or (7) only:

§ 21.25(b) (1) Agriculture Operations § 21.25(b) (2) Forest & Wildlife Conservation § 21.25(b) (7) External Loads

Note: In accordance with § 36.1(a)(4), compliance with the noise requirements for these special purpose operations was not shown.

- END -

### SR02753LA_AML.pdf

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR02753LA FOR**

INSTALLATION OF AEROMETALS ENGINE INLET BARRIER FILTER SYSTEM ISSUE DATE: April 16, 2021

Page 1 of 3

**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. Pickering Aviation, Inc.

EH-60A, UH-60A, UH-60L R00003AC 14 CFR Part 29, Amdt 20 1060-RFMS- 1 NC 1060-MDL- 1 C 10/05/2026

2. ACE Aeronautics, LLC UH-60A, UH-60L R00005RC --- --- --- --- --- 10/05/2026

3. Blackhawk Mission Equipment UH-60A R0012DE --- --- --- --- --- 10/05/2026

4. Delta Enterprise, LLC UH-60A, EH-60A, UH-60L R00019AT --- --- --- --- --- 10/05/2026

5. Carson Helicopters, Inc.

UH-60A R00020AT --- --- --- --- --- -

6. PJ Helicopters, Inc.

UH-60A R00020LA --- --- --- --- --- -

7. Billings Flying Service Inc.

UH-60A R00021LA --- --- --- --- --- -

8. Skydance Blackhawk Operations, LLC UH-60A R00022LA --- --- --- --- --- -

9. Unical Air Inc. UH-60A R00023LA --- --- --- --- --- 10/05/2026

10. Sixtyhawk TC, LLC EH-60A, HH-60L, UH-60A R00025LA --- --- --- --- --- 08/19/2021

11. Timberline Helicopters, Inc.

UH-60A UH-60L R00052SE --- --- --- --- --- 10/05/2026

12. High Performance Helicopters Corp.

UH-60A R00054SE --- --- --- --- --- -

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR02753LA FOR**

INSTALLATION OF AEROMETALS ENGINE INLET BARRIER FILTER SYSTEM ISSUE DATE: April 16, 2021

Page 2 of 3

**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*

13. Northwest Rotorcraft, LLC UH-60A R00058SE --- --- --- --- --- -

14. Capitol Helicopters Inc.

UH-60A, HH-60L R00026LA --- --- --- --- --- -

15. Sikorsky Aircraft Corporation S-70M H5NE --- --- --- --- --- 08/19/2021

16. Reeder Flying Service Inc.

UH-60A R00027LA --- --- --- --- --- 08/16/2022

17. HeliQwest International Inc.

UH-60A, EH-60A R00028LA --- --- --- --- --- 08/16/2022

18. Central Copters Inc.

HH-60L, UH-60L R00029LA --- --- --- --- --- 10/05/2026

19. Hallux Aerospace LLC UH-60A, UH-60L R00035LA --- --- --- --- --- 05/22/2025

**20. H-60, LLC UH-60A, UH-60L R00113SE --- --- --- --- --- 05/22/2025**

21. Air Resources Helicopters Inc.

UH-60A, UH-60L R00116LA 10/05/2026

22. BHI Productions LLC UH-60A, UH-60L R00024AT 10/05/2026

23. Hagglund Helicopters LLC UH-60A R00031LA 10/05/2026 * Or later FAA Approved Revision --- Indicates same as entry above

**FEDERAL AVIATION ADMINISTRATION (FAA) APPROVED MODEL LIST (AML) SR02753LA FOR**

INSTALLATION OF AEROMETALS ENGINE INLET BARRIER FILTER SYSTEM ISSUE DATE: April 16, 2021

Page 3 of 3

FAA Approved:

for Manager, West Certification Branch

AMENDED: 08/19/2021, 08/16/2022, 05/22/2025, 10/05/2026

## Every issue (3)

- October 5, 2026: Amended, Current. [certificate](https://openairdocs.org/files/sha256/43/bc/43bc0428caa9ed7a0623d48b99d5420b18de6b73dca1f28af0a28ae9d90aca4e), [SR02753LA_AML.pdf](https://openairdocs.org/files/sha256/4f/07/4f07e8eb45e7fac8d7a58e2f1ff6d5be348741c209007d2585cc864ef1e00a8d)
- May 22, 2025: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/43/bc/43bc0428caa9ed7a0623d48b99d5420b18de6b73dca1f28af0a28ae9d90aca4e), [SR02753LA_AML.pdf](https://openairdocs.org/files/sha256/2a/09/2a09529615c5d684572820198654383cf40b17788754c6612f680ed3d00448f9)
- April 16, 2021: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/43/bc/43bc0428caa9ed7a0623d48b99d5420b18de6b73dca1f28af0a28ae9d90aca4e), [AML_SR02753LA.pdf](https://openairdocs.org/files/sha256/fd/a6/fda64ce91a5ebd38b1ef035b575d70033c90dabb53e23ed6cd70566456beed44)

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