# STC ST10954SC

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Delta G Design Inc, United States
- Description: Installation of a Chelton HGA-7001 (High Gain Antenna) & DLNA
- Applied: February 26, 2009
- Status date: August 13, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE)
- Certificate PDF: https://openairdocs.org/files/sha256/97/1f/971fe79bb6e3302144f41c202062ccc5c44b0799c2e847a4de88709295aa2108
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/6BAA1EBCB10D5D66862576330060FCD9.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/ST10954SC

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE))

## 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. ST9073SC-T

Part 4b of the Civil Air Regulations.

Description of Type Design Change: Installation of a Chelton HGA-7001 (High Gain Antenna) & DLNA in accordance with Delta G Design Master Data List DGD-MDL-010409 IR, released on 5/20/209 or later FAA approved revison. FAA approved Airplane Flight Manual Supplement for Boeing 727-200 with Chelton SATCOM antenna, IR date August 13, 2009 or later FAA approved revision is required.

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.

Delta G Design 716 Lake Air Drive Waco, TX 76710 A3WE Make : Boeing Model : 727-200 Series Date of application : February 26, 2009

Date of issuance : August 13, 2009

( Signature) Gary A. Sharon Acting Manager, Special Certification Office Southwest Region

( Title)

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

## Every issue (1)

- August 13, 2009: Issued, Current. [certificate](https://openairdocs.org/files/sha256/97/1f/971fe79bb6e3302144f41c202062ccc5c44b0799c2e847a4de88709295aa2108)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.