What it approves
Installation of Allied Signal, Inc., (Garrett) TPE331-10T series engines (-512K, -515K, or -516K in the 690A and 690B; -511K or -513K in the 690C and 690D) and related changes.
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 SA236CH
This certificate, issued to Twin Commander Aircraft LLC 1176 Telecom Drive Creedmoor, NC 27522
Part 3 of the Civil Air Regulations.
Original ProductType Certificate Number: 2A4 Make: Twin Commander Model: 690A, 690B, 690C, and 690D
Description of the Type Design Change: Installation of Allied Signal, Inc., (Garrett) TPE331-10T series engines (-512K, -515K, or -516K in the 690A and 690B; -511K or -513K in the 690C and 690D) and related changes in accordance with Twin Commander -10T Engine Conversion PP-60-603, Revision New, dated September 9, 1998, or later FAA-approved revision, Twin Commander Master Drawing List (MDL) PP 60-604, dated September 9, 1998, or later FAA-approved revision, and Twin Commander Installation Instructions, PP 60-601, Revision K, dated June 27, 2003, or later FAA-approved revision.
Limitations and Conditions: This change in type design applies to the above model aircraft only. 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 interrelationship between this change and any of those other previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. Airplane Flight Manual Supplement (AFMS) 18, dated February 22, 1995, or later FAA-approved revision, is required for the Model 690A. Pilot’s Operating Handbook Supplements 17, 33, and 36, dated February 22, 1995, or later FAA-approved revisions, are required for the Models 690B, 690C, and 690D, respectively.
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: October 28, 1993 Date reissued: 10/8/94; 11/12/09; 7/24/14 Date of issuance: August 4, 1994 Date amended: 9/8/94; 10/3/94; 2/22/95; 7/26/04
(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.
Approved models · 4
Every issue · 3
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| July 24, 2014 | Reissued, current | Certificate |
| November 12, 2009 | Reissued, earlier issue | Certificate |
| July 26, 2004 | Amended, earlier issue | Certificate |