STC SA09247AC

Supplemental type certificate · Twin Commander Aircraft LLC

Holder
Twin Commander Aircraft LLC · United States
Status
Current · Reissued
Status date
July 24, 2014
Applied
August 14, 1996
Product
Aircraft · Small Multi-Engine
Certification basis
Part 3, Part 21
Data sheet
TCDS2A4

From FAA DRS, with our copy of the certificate PDF. DRS record last changed December 6, 2025.

What it approves

Replace the engine exhaust ejector assembly, P/N 260042-55 LH & P/N 260042-56 RH, with a heavier gauge ejector which has a modified fairing.

What the certificate says

From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.

Number SA09247AC

This certificate, issued to Twin Commander Aircraft LLC 1176 Telecom Drive Creedmoor, NC 27522

Part 3 of the Civil Air Regulations.

Original ProductType Certificate Number: 2A4 Make: Gulfstream Model: 690, 690A, 690B

Description of the Type Design Change: Replace the engine exhaust ejector assembly, Part Number (P/N) 260042-55 LH, and P/N 260042-56 RH, with a heavier gauge ejector which has a modified fairing in accordance with The ServiCenter Drawing SC-700, Initial Release, dated August 1, 1996. This modification is applicable to Twin Commander Model 690, Serial Numbers (S/N) 11025 and 11070 through 11099, and Models 690A and 690B, S/N 11100 through 11599.

Limitations and Conditions: Compatibility of this design change with previously approved modifications must be determined by the installer. Approval of this change in type design applies to the above aircraft model only.

This approval should not be extended to other aircraft of this model series unless the installer determines that the relationship between this change and any other previously incorporated approved modifications will introduce no adverse effect upon the airworthiness of that aircraft.

A copy of this certificate must be maintained as part of the permanent records for the modified 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 of application: August 14, 1996 Date reissued: 9/16/97; 5/26/04; 11/12/09; 7/24/14 Date of issuance: November 1, 1996 Date amended: May 26, 2004

FAA FORM 8110-2-1 (10-69) PAGE 1 OF 2 PAGES

(Signature)

Manager, Seattle Aircraft Certification Office (Title)

ADs that name this STC · 0

An AD can apply because an STC is installed, or mention one in its text.

No AD in this release names this STC

Approved models · 3

MakeModelData sheet
Twin Commander Aircraft LLC6902A4
Twin Commander Aircraft LLC690A2A4
Twin Commander Aircraft LLC690B2A4

Every issue · 3

DRS keeps each issue of an STC as its own record, with its own certificate and attachments.

DateStatusFiles
July 24, 2014Reissued, currentCertificate
November 9, 2009Reissued, earlier issueCertificate
May 26, 2004Amended, earlier issueCertificate