# STC SA3578NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: GE Engine Services-Corporate Aviation Inc.
DBA Garrett Aviation Services, United States
- Description: Installation of five tube Bendix EFS-10 electronic flight instrument system (EFIS).
- Applied: December 9, 1986
- Status date: July 30, 2003
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25, Part 121
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- Certificate PDF: https://openairdocs.org/files/sha256/6a/a3/6aa30e95ebf647e2da829a9de5c9fdd5065d85c23060333dc54a38e86b9c14a1
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BCA94F115A40703F8625712600537C94.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3578NM

## ADs that name it (0)

None.

## Approved models (2)

- Gulfstream Aerospace Corporation G-1159 ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))
- Gulfstream Aerospace Corporation G-1159B ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

## 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.

Number SA3578NM

**GE ENGINE SERVICES-CORPORATE AVIATION, INC**

DBA GARRETT AVIATION SERVICES 6201 WEST IMPERIAL HIGHWAY LOS ANGELES, CALIFORNIA 90045 This Certificate issued to

Part * of the Civil Air Regulations. (*For certification basis of this modification see page 3)

A12EA

Gulfstream Aerospace Corporation

G-1159, G-1159B Original Product Type Certificate Number :

Description of Type Design Change: Installation of five tube Bendix EFS-10 Electronic Flight Instrument System (EFIS) in accordance with FAA sealed Western Commander, Inc. Top Drawing No. 02000046 revision N/C dated November 15, 1986, or later FAA sealed revision.

Western Commander, Inc. Airplane Flight Manual Supplement, Document No. 02015024, FAA approved on March 25, 1987, or later FAA approved revision is required as part of this modification.

Limitations and Conditions: The approval of change in type design applies to the above listed model airplanes only. This should not be extended to other aircraft of these models on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. 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.

Date reissued : December 20, 1994, July 30, 2003

Date amended

( Signature) Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office

(Title)

Date of application : December 9, 1986

Date of issuance : March 26, 1987

Number SA3578NM

Date of Application: December 9, 1986 Date of Issuance: March 26, 1987 Date Reissued: December 20, 1994, July 30, 2003

The Certification Basis for this Modification is:

FAR 25.1301 thru Amendment 25-41 FAR 25.1303 “ “ ‘ FAR 25.1309 “ “ “ FAR 25.1321 “ “ “ FAR 25.1333 “ “ “ FAR 25.1335 “ “ “

Limitations and Conditions: (Continued)

A functioning, independent, standby attitude indicator which satisfies FAR 121.305(j) must be installed. A copy of this STC must be included in the permanent records of the modified aircraft.

-END-

## Every issue (1)

- July 30, 2003: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/6a/a3/6aa30e95ebf647e2da829a9de5c9fdd5065d85c23060333dc54a38e86b9c14a1)

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