# STC ST09741SC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Systems & Mfg, United States
- Description: Installation of a Digital Flight Data Recorder (DFDR) expanded parameter upgrade using an SFIM ARINC 717 Digital Flight Data Acquisition Unit (DFDAU).
- Applied: March 30, 2000
- Status date: June 11, 2010
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25, Part 26
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/56/cb/56cb4e08524465a33143bf79d599fc65f2c3c00e750ff88b850c3e64bdf747d5
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F13461B65E7E3DDD8625774A005204E7.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST09741SC

## ADs that name it (0)

None.

## Approved models (1)

- McDonnell Douglas Corporation MD-90-30 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## 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 Project No. SA9187SC-T SHC

Part 25 of the Federal Aviation Regulations.

Description of Type Design Change: Installation of a Digital Flight Data Recorder (DFDR) expanded parameter upgrade using an ARINC 717 Digital Flight Data Acquisition Unit (DFDAU) in accordance with ASM Top Drawing List 5556-0001-00, Revision J, dated February 12, 2010, or later FAA approved revision.

Limitations and Conditions: 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 the product, the holder shall give the other person written evidence of that permission.

Aircraft Systems & Manufacturing 302 Toledo Trail Georgetown, TX 78628 A6WE Make : McDonnell Douglas Model : MD-90 Date of application: March 30, 2000

Date of issuance: June 13, 2000

Date amended: June 11, 2010

( Signature) S. Frances Cox Manager, Special Certification Office Southwest Region

( Title)

FAA Form 8110-2-1(10-69) Page 2 of 4

FAA Form 8110-2-1(10-69) Page 3 of 4

Number ST09741SC Date of Issuance: June 13, 2000 Date Amended: June 11, 2010

Certification Basis: Based on 14 CFR §§ 21.115 and 21.101(b)(1), and FAA Order 8110.48, the certification basis for the MD90-30 modified by ARINC 717 DFDR Expanded parameter upgrade is as follows:

a. The type certification basis for MD90-30 airplanes is shown on TCDS A6WE for parts not changed or not affected by the change.

b. The certification basis for parts changed or aff ected by the change since the reference date of applications September 11, 2009, is based upon part 25 amendments 25-72, 25-80, 25-82, 25-86, 25- 91, 25-112, 25-113, 25-123 as applicable to this modification and noted below.

Part 25, Subpart B – Flight

25.29 (b)

Part 25, Subpart C – Structure

25.301 a,b, Amdt 25-23

25.303, Amdt 25-23

25.305, Amdt 25-86

25.561 a,b,c,d, Amdt 25-91

Part 25, Subpart D – Design and Construction

25.603 a, Amdt 24-46

25.605 a, Amdt 25-46

25.607, Amdt 25-23

25.613, Amdt 25-112

25.625, Amdt 25-72

25.789, Amdt 25-46

25.869 a(1,4), Amdt 25-113 25-899 a, Amdt 25-123

Part 25, Subpart F – Equipment

25.1301, a, Amdt 25-123

25.1309 b,c,d,e, Amdt 25-123

25.1316, Amdt 25-80

25.1351 a, Amdt 25-72

25.1353 a, Amdt 25-123

25.1357 a,c,e, Amdt 25-129

25.1431 a,b,c,d, Amdt 25-113

25.1459 a,b,c,d, Amdt 25-65

Part 25, Subpart G - Operating Limitations and Information

25.1529, Amdt 25-54

25.1541 a,b, Amdt 25-72 Number ST09741SC

FAA Form 8110-2-1(10-69) Page 4 of 4

Date of Issuance: June 13, 2000 Date Amended: June 11, 2010

Certification Basis (Continued):

Part 26, Continued Airworthiness and Safety Improvements for Transport Category Airplanes Subpart B – Enhanced Airworthiness Program for Airplane Systems

26.11, Amdt 26-0

26.47, Amdt 26-1

26.49, Amdt 26-1

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## Every issue (1)

- June 11, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/56/cb/56cb4e08524465a33143bf79d599fc65f2c3c00e750ff88b850c3e64bdf747d5)

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