# STC SH581NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Erickson Air Crane Inc. dba Erickson Air-Crane, United States
- Description: Installation of a hydraulic hand pump on the rotor brake system
- Applied: February 1, 1978
- Status date: March 1, 2001
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 29
- Data sheets: [TCDS H6EA](https://openairdocs.org/tcds/H6EA)
- Certificate PDF: https://openairdocs.org/files/sha256/7f/29/7f293c4a12fee82cd8e42a6af63d55d4d3417aac850f53d25af165bd9057d33a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1F5CBAF44ECB437F86257A450051C5B1.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SH581NW

## ADs that name it (0)

None.

## Approved models (2)

- Erickson Air-Crane Company S-64F ([TCDS H6EA](https://openairdocs.org/tcds/H6EA))
- Sikorsky Aircraft Corporation S-64E ([TCDS H6EA](https://openairdocs.org/tcds/H6EA))

## 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 SH581NW

This certificate, issued to Erickson Air-Crane, Inc.

dba Erickson Air-Crane 3100 Willow Springs Road Central Point, OR 97502 Part 29 of the Federal Aviation Regulations.

Original ProductType Certificate Number: H6EA Make: Erickson Model: S-64E and S-64F Description of the Type Design Change: Installation of a hydraulic hand pump on the rotor brake system in accordance with Erickson Air-Crane Company Data Specification No. EAC 3000 and Photos (1) through (4).

NOTE: This modification replaces Sikorsky Electric Package, P/N 71428.

Limitations and Conditions: Approval of this change in type design applies to the above model rotorcraft only.

This approval should not be extended to other rotorcraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer 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. A copy of this Certificate and FAA Approved Rotorcraft Flight Manual Supplement (AFMS) dated May 23, 1986, for S-64E, or AFMS dated March 19, 1993, for S-64F, or later FAA approved revisions, 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: February 01, 1978 Date reissued: 08/22/97; 03/01/01 Date of issuance: March 24, 1978 Date amended: 05/23/86; 03/19/93; 03/01/01

(Signature) Acting Manager, Seattle Aircraft Certification Office (Title)

## Every issue (1)

- March 1, 2001: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/7f/29/7f293c4a12fee82cd8e42a6af63d55d4d3417aac850f53d25af165bd9057d33a)

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