# STC SA236CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Twin Commander Aircraft LLC
- Description: 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.
- Status date: July 24, 2014
- Data sheets: 2A4, 2A4, 2A4, 2A4
- Certificate PDF: https://openairdocs.org/files/sha256/cc/ad/ccad08430d932073a4ab7c2b44a0298345d62b14177752c0c53ffa121afaa8ae
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/13B5A796C02BEAB586257D2400679932.0001
- Page: https://openairdocs.org/stc/SA236CH

## ADs that name it

None.

## Approved models (4)

- Twin Commander Aircraft LLC 690A (TCDS 2A4)
- Twin Commander Aircraft LLC 690B (TCDS 2A4)
- Twin Commander Aircraft LLC 690C (TCDS 2A4)
- Twin Commander Aircraft LLC 690D (TCDS 2A4)

## 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 SA236CH

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: 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)

## Every issue (3)

- July 24, 2014: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/cc/ad/ccad08430d932073a4ab7c2b44a0298345d62b14177752c0c53ffa121afaa8ae)
- November 12, 2009: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/35/b2/35b22c0f6676b281f7a8327335285686ad0cffe713b8fad010470bdce5cb9388)
- July 26, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/e0/7c/e07c2dba4def14926080c2d3bc32d7b1bed47034d6a9df0cc083d11292bcc358)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.