STC SR04422CH

Supplemental type certificate · National Aircraft Service Inc

Holder
National Aircraft Service Inc · United States
Status
Current · Issued
Status date
August 27, 2019
Applied
February 1, 2018
Product
Aircraft
Certification basis
Part 21, Part 23, Part 29

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Installation of NASI NTEC36TM Cooling System in accordance with Master Data List (MDL) as listed on AML No. SR04422CH, or later FAA approved revision.

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

Part 23 of the Federal Aviation Regulations.

Original Product--Type Certificate Number *

Installation of NASI NTEC36TM Cooling System in accordance with Master Data List (MDL) as listed on AML No. SR04422CH, or later FAA approved revision.

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

2) 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.

3) Rotorcraft Flight Manual Supplement (RFMS) as listed on AML number SR04422CH, or later FAA approved revision, is required on board the modified aircraft.

4) A copy of this Certificate and FAA Approved Model List (AML) No. SR04422CH, issued August 27, 2019, or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft

National Aircraft Service, Inc. (NASI) 9133 Tecumseh Clinton Hwy Tecumseh, MI 49286 * See attached Federal Aviation Administration (FAA) Approved Model List (AML) number SR04422CH for list of approved rotorcraft models and applicable airworthiness regulations.

(Signature) Steven L. Lardinois Manager, Systems Section Chicago ACO Branch

(Title)

Date of application: February 1, 2018

Date of issuance: August 27, 2019

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 5

MakeModelData sheet
Sikorsky Aircraft CorporationS-70H2NE
Sikorsky Aircraft CorporationS-70AH5NE
Sikorsky Aircraft CorporationS-70CH3NE
Sikorsky Aircraft CorporationS-70C(M)H4NE
Sikorsky Aircraft CorporationS-70C(M1)H4NE

Every issue · 1

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
August 27, 2019Issued, currentCertificateApproved model list