# STC SR00174NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Air Comm Corporation, United States
- Description: Installation of Vapor Cycle Air Conditioning system
- Applied: January 26, 1995
- Status date: November 24, 2014
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H19NM](https://openairdocs.org/tcds/H19NM)
- Certificate PDF: https://openairdocs.org/files/sha256/f8/21/f82189141ed6b78f7e62bdbf8f5bc694ab2b0f82484d2a3e5943b8d4e335d826
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C09DA6AF8A2BED0B86257DF8005C8143.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR00174NM

## ADs that name it (0)

None.

## Approved models (1)

- MD Helicopters Inc. MD900 ([TCDS H19NM](https://openairdocs.org/tcds/H19NM))

## 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 N umber SR00174NM This certificate, issued to Air Comm Corporation 1575 West 124th Ave Westminster, CO 80234 Title 14, Part 27 of the Code of Federal Regulations.

Original ProductType Certificate Number: H19NM Make: McDonnell Douglas Helicopter Systems Model: MD-900 Description of the Type Design Change:

Installation of Vapor Cycle Air Conditioning system in accordance with Air Comm Corp. Master Drawing List Report DL-MD900AC, initial release, dated March 31,1995, or later FAA approved revision.

1. FAA Approved Rotorcraft Flight Manual Supplement, dated July 31, 1995 or later FAA approved revision is required.

2. Approval of this change in type design applies to the model of aircraft listed above only.

3. Compatibility of this design change with previously approved alterations must be determined by the installer.

4. 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.

5. A copy of this certificate and the appropriate flight manual supplement as listed above must be maintained as part of the permanent record for the altered aircraft.

Date of application: January 26, 1995 Date reissued: Nov 24, 2014 Date of issuance: July 31, 1995 Date amended:

Todd Dixon (Signature) Manager Denver Aircraft Certification Office Northwest Mountain Region, (Title)

## Every issue (2)

- November 24, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/f8/21/f82189141ed6b78f7e62bdbf8f5bc694ab2b0f82484d2a3e5943b8d4e335d826)
- August 15, 2014: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/20/6c/206c166218ddc0ac5008fa7bf86aac3547f54ea09ffd310daa109ce98054b006)

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