# STC SA2561NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Hughes Aviation Services, United States
- Description: Installation of a Dual Collins FDS-BO Flight Director System and a Collins EFIS-85A Five Tube Electronic Flight Instrument System.
- Applied: March 8, 1985
- Status date: March 21, 1985
- Product: Aircraft
- Certification basis: Part 21
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- Certificate PDF: https://openairdocs.org/files/sha256/ad/ec/adecdbe1b488792242a91f40731848768f202968c480a7c7933354caad40432c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E0E91D4BA2C1B0E1862579D60072A16B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2561NM

## ADs that name it (0)

None.

## Approved models (1)

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

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

- 104S Minited States of Elmenta Department of Transportation Federal Aviation Administration Supplemental Type Certificate Lumber 5A2561NA no erical, ound & Hughes Aviation Services 6005 has Vegas Blud. South, Las Ve gas, NV 89119 Certifies that the change in the type design for the felling produl with the tundata ns and wadita therefer as sperefied heren meets the sieur Al Civil Air Regulatives Original Product -Sype trestificates Sumter A12FA Gulfstream Aerospace G-1159 "Tary/»y/pe fog»Caange Installation of d sual Collins EDS-BU Flight Director System and a Collins EPIS-85A Pive Tube Flectronic Flight Instrunent System in accordance with Hughes Aviation Services braving No. 1159-EPIS, Revision "Original" dated February 1, 1985.

Wath thie inest se on weren 28, 1985, of FAA approved Hughes Aviation Services Airplane Plight Manual Supplement No. G1159-AFM - EFIS dated March 21, 1985, or later PA approved revision in required ///#// The data describing this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation made in Gulfstream Aerospace Model G-1159, Serial No. 008 (Registration No. N225CC) only.

This certificate and the supporting data which is the basis for approval shall res rentered, suspended, verked, ve a termination date is dhorse estuldstud big the tilen Ideal mahen edministraton Date of Application: March 8, 1985 One mand 1 ate / camer March 21, 1985 AVIAN & the instater надів - MINISTRATIO far Manager, Western Aircraft Certification Office To alratna of Mo settee a pantshable bra fine of not credu ****ENE110-2(10-68) the west tate may be tousfened in mondance pyth / T

## Every issue (1)

- March 21, 1985: Issued, Current. [certificate](https://openairdocs.org/files/sha256/ad/ec/adecdbe1b488792242a91f40731848768f202968c480a7c7933354caad40432c)

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