# STC SR09073RC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: MD Helicopters LLC, United States
- Description: Installation of high density seat track.
- Applied: March 6, 1996
- Status date: August 5, 2022
- Product: Aircraft, Rotorcraft
- Certification basis: Part 21, Part 27
- Data sheets: [TCDS H19NM](https://openairdocs.org/tcds/H19NM)
- Certificate PDF: https://openairdocs.org/files/sha256/90/18/90180cf2a8e3303195764ac79ad0f660801e168412d68bd657c1b43879c72969
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125464529120221014171520.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SR09073RC

## ADs that name it (0)

None.

## Approved models (1)

- MD Helicopters LLC 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 FAA Form 8110-2 (03/21) Page 1 of 2 22___

Number: SR09073RC

This certificate issued to: MD Helicopters, LLC 4555 East McDowell Road Mesa, Arizona 85215-9734

27 of the Federal Aviation Regulations.

Original Product – Type Certificate Number: H19NM

- Make: MD Helicopters, LLC Model: MD900

Description of Type Design Change: Installation of High Density Seat Track Installation in accordance with Heli-Dyne Drawing List HD900-00-0025, Revision A, dated April 10, 1996, and ECO900-96- 023, dated May 20, 1996, or later FAA approved revision.

Limitations and Conditions: Flight Manual Supplement for High Density Seat Track Installation for McDonnell Douglas MD900 Helicopters, document number HDD96-8, dated May 31, 1996, or later FAA approved revision is required. 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.

Date of Application: March 6, 1996 Date Reissued: October 26, 2010; February 27, 2012 August 5, 2022

Date of Issuance: May 31, 1996 Date Amended:

Title: Acting Manager, Technical & Administrative Support Section Aviation Safety Los Angeles ACO Branch

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate FAA Form 8110-2 (03/21) Page 2 of 2 22___

Number: SR09073RC

## Every issue (3)

- August 5, 2022: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/90/18/90180cf2a8e3303195764ac79ad0f660801e168412d68bd657c1b43879c72969)
- February 27, 2012: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/d6/92/d69230c40f069906aa755aff8f0f505ea4f0d0bd862b27b8f52976018d5f981f)
- October 26, 2010: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/98/6b/986b25a77546c3373bf9f15917870dde63b82e63b16618fed5ae3697221522bf)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.