# STC SR04567AT

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Helifab East LLC, USA
- Description: Installation of Crew and Cabin Floor Protectors
- Applied: February 15, 2023
- Status date: September 11, 2023
- Product: Aircraft, Rotorcraft
- Certification basis: Part 27
- Data sheets: [TCDS R00008RD](https://openairdocs.org/tcds/R00008RD)
- Certificate PDF: https://openairdocs.org/files/sha256/79/e2/79e26c7a5a330866f24f7a71107549550022ee1354fd6377f82c748cb2f69120
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149115567120230913211106.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SR04567AT

## ADs that name it (0)

None.

## Approved models (1)

- Bell Textron Canada Limited 505 ([TCDS R00008RD](https://openairdocs.org/tcds/R00008RD))

## 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.

Title: (for) Christina M. Underwood Manager, East Certification Branch Compliance and Airworthiness Division Aircraft Certification Service SR04567AT Helifab East, LLC 602 Sevier St. Unit 300 Johnson City, TN 37604-7561 Part 27 Federal Aviation Regulations R00008RD Bell Textron Canada Limited 505 Installation of Crew and Cabin Floor Protectors in accordance with FAA approved Helifab East, LLC Master Document List HFE-MDL-21-5, Revision IR, dated June 26, 2023; or later FAA approved revision.

The installation should not be incorporated in any aircraft unless it is determined that the interrelationship between this installation and any previously approved configuration will not introduce any adverse effect upon the airworthiness of the aircraft. (Limitations and Conditions continued on page 3 of 4) February 15, 2023 September 11, 2023

SR04567AT 4

SR04567AT

Limitations and Conditions: (continued)

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

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.

A copy of this STC must be included in the permanent record of the modified aircraft.

The Helifab East, LLC Instructions for Continued Airworthiness, HFE-CA-21-5, Revision A, dated August 9, 2023 or later FAA accepted revision, must be made available to the operator at the time of installation.

Certification Basis:

Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for design changes that are identified as not significant in FAA Order 8110.48A, the certification basis for the Bell Textron Canada Limited model rotorcraft listed on page 1 of this certificate is as follows:

a. The type certification basis for parts not changed or not affected by the change, for the Bell Textron Canada Limited models shown on page 1, is shown on TCDS R00008RD.

b. The certification basis for parts changed or affected by the change since the reference date of application, February 15, 2023, is based upon part 27 as amended by Amendment 27-48. Based on 14 CFR §§ 21.115 and 21.101, and the FAA policy for non-significant changes in FAA Order 8110.48A, the certification basis for this modification was determined to be: (Certification Basis Continued on Page 4 of 4) 3 4

SR04567AT

(Certification Basis Continued)

Regulations at the latest amendment 27-1 through 27-48:

None

Regulations at an intermediate amendment:

None

Regulations at the amendment level in TCDS R00008RD for the Model 505:

27.29(b), 27.301, 27.303, 27.305(a)(b)(1), 27.337, 27.601(a), 27.603, 27.605(a),

27.609, 27.611, 27.613, 27.619, 27.625(a)(b)(c), 27.853(a), 27.1529.

--------------------END-------------------- 4 4

## Every issue (1)

- September 11, 2023: Issued, Current. [certificate](https://openairdocs.org/files/sha256/79/e2/79e26c7a5a330866f24f7a71107549550022ee1354fd6377f82c748cb2f69120)

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