# STC SA1685NM

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Aero Air, Inc., United States
- Description: Installatino of EASY TAXI Brake System
- Applied: June 22, 1982
- Status date: May 9, 1984
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- Certificate PDF: https://openairdocs.org/files/sha256/9b/5a/9b5a51b838392114734b67ec0a05b96c428906673dd5bde27abf9929754a517a
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74667D9C161E566D862579FB006AF830.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA1685NM

## ADs that name it (0)

None.

## Approved models (15)

- Twin Commander Aircraft LLC 680-F ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680-FL ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680-FL(P) ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680-T ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680-V ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680-W ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 681 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 685 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690A ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690B ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690C ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 690D ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 695 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 695A ([TCDS 2A4](https://openairdocs.org/tcds/2A4))

## What the certificate says

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

Limitco States of 2imcrico Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA 1685NM This certificate issued to: Aero Air, InC.

Purt 3 the Civil Air Regulations.

Original Product - Type bartificate Number 2A4 Make: Gulfstream American Model: 6801, 680V, 680W, 680F, 680FL, 680FL(P), 681, 685, 690, 690A, 690B, 690C, 690D, 695, 695f Installation of Aero Air, Inc. EASY TAXI Brake System on the listed Gulfstream American Model airplanes in accordance with an FAA Sealed Copy of Aero Air, Inc. Installation Drawing No. AA1001 and associated Parts List, each dated August 9, 1982, or later FAA approved revision, and Manufacture of related parts in accordance with FAA Sealed Copy of Aero Air, Inc. EASY TAXI Brake System Data List, dated August 9, 1982, or later FAA approved revision, and Serviced in accordance with an FAA Sealed Copy of Aero Air, Inc. EASY TAXI Service Instructions dated August 9, 1982, or later FAA approved revision.

The approval of this change in type design applies to the Jimilatins and Conditina: basic Gulfstream American Model 690C, 690D, 695 and 695A airplanes, only. Gultstream American Model 680T, 68UV, 680W, 680F, 680FL, 680FL(P), 681, 685, 690, 690A and 690B airplanes must nave been previously equipped with Cleveland Wheels and Brakes Kit No. 199-80 in accordance with STC SA497GL. This approval 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 modifications will introduce no adverse effect on the airworthiness aFfed in the displane at all of that aircraft. A copy of this certificate should be carried in the airplane at all

Date of Application: June 22, 1982 Tute missued:

Date of Issuance: August 18, 1982 Date Amended: May 9, 1984 FEDERAL AVIATION Chailes CoAcherder (Signature) * RATO Manager, Seattle Aircraft Certification Offic (Title)

47.

## Every issue (1)

- May 9, 1984: Amended, Current. [certificate](https://openairdocs.org/files/sha256/9b/5a/9b5a51b838392114734b67ec0a05b96c428906673dd5bde27abf9929754a517a)

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