# STC SA01660CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Hartzell Engine Technologies, LLC, United States
- Description: Remove Janitrol P/N C15C54 or Twin Commander P/N 88035-5 combustion heater and install C&D Associates, Inc. Model CD35K heater kit 10 P/N CD12043K10
- Applied: January 8, 2002
- Status date: February 11, 2016
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS 6A1](https://openairdocs.org/tcds/6A1), [TCDS 2A4](https://openairdocs.org/tcds/2A4)
- Certificate PDF: https://openairdocs.org/files/sha256/6a/36/6a367270ee5a297aad945327b4b42eb983eb0ea827e86ea7db0a917498b3546b
- Approved model list and other attachments: [AML_SA01660CH.pdf](https://openairdocs.org/files/sha256/c8/42/c842030417bc5e8d47064991ffcf2804350bdc0ec4c833135d8035d8d0bd09e0)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3C3CFC2999F8B52086257FAF00707730.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA01660CH

## ADs that name it (0)

None.

## Approved models (15)

- Twin Commander Aircraft LLC 500 ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-A ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-B ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-S ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 500-U ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 520 ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 560 ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 560-A ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 560-E ([TCDS 6A1](https://openairdocs.org/tcds/6A1))
- Twin Commander Aircraft LLC 560-F ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680 ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- Twin Commander Aircraft LLC 680-E ([TCDS 2A4](https://openairdocs.org/tcds/2A4))
- 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))

## 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.

Part * of the * Regulations. *

Original Product--Type Certificate Number: * *See attached FAA Approved Model List Make: * (AML) No. SA01660CH for list of approved airplane Model : * models and applicable airworthiness regulations

Remove Janitrol P/N C15C54 or Twin Commander P/N 88035-5 combustion heater and install C&D Associates, Inc. Model CD35K heater kit 10 P/N CD12043K10 in accordance with C&D Associates, Inc. Installation Instructions as listed on AML No.

SA01660CH, or later FAA Approved revision.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. FAA approved Airplane Flight Manual Supplement, Rev. -, dated March 4, 2002, and Instructions for Continued Airworthiness/ Maintenance Manual MM10000, Second Edition, Rev. none, dated April 4, 2002 or later FAA approved revision are required.

3. Check aircraft Weight and Balance.

4. A copy of this certificate and FAA Approved Model List (AML) No. SA01660CH, dated June 24, 2002, or later FAA approved revision must be maintained as part of the permanent records for the modified aircraft.

5. 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.

Hartzell Engine Technologies LLC 2900 Selma Highway Montgomery, Alabama 36108 Date of application : January 8, 2002

Date of issuance : June 24, 2002

Date reissued : February 11, 2016

(Signature) Timothy Smyth Manager, Chicago Aircraft Certification Office

(Title)

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

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee)

from (Name of grantor) (Print or type)

(Address of grantor)

Signature of grantor (In ink):

### AML_SA01660CH.pdf

**FAA APPROVED MODEL LIST (AML) NO. SA01660CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING COMBUSTION HEATER MODEL CD35K KIT 10 P/N CD12043K10

Date of Issuance: June 24, 2002

ITEM AIRCRAFT MAKE AIRCRAFT MODEL ORIGINAL TYPE CERTIFICATE NUMBER CERTIFICATION BASIS FOR ALTERATION

**INSTALLATION**

**INSTRUCTIONS AFM SUPPLEMENT**

**NUMBER/DATE AML**

**AMENDMENT**

**DATE NUMBER REVISION & DATE**

1. Twin Commander 500, 500-A, 500-B, 500-S, S/N 0131 and up, 500-U, 520, 560, 560-A, 560-E 6A1 CAR 3 IN12043K10 REV. – Dated 1/8/2002 or later FAA approved revision Rev. -, date:

3/4/2002

2. Twin Commander 560-F, 680, 680-E, 680-F, 680-FL, 680FL (P) 2A4 CAR 3 IN12043K10 REV. A Dated 1/8/2002 or later FAA approved revision Rev. -, date:

3/4/2002 6/20/2000

Date reissued: February 11, 2016

FAA Approved: ________________________________________ Timothy P. Smyth Manager, Chicago Aircraft Certification Office

**FAA APPROVED MODEL LIST (AML) NO. SA01660CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING COMBUSTION HEATER MODEL CD35K KIT 10 P/N CD12043K10

## Every issue (1)

- February 11, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/6a/36/6a367270ee5a297aad945327b4b42eb983eb0ea827e86ea7db0a917498b3546b), [AML_SA01660CH.pdf](https://openairdocs.org/files/sha256/c8/42/c842030417bc5e8d47064991ffcf2804350bdc0ec4c833135d8035d8d0bd09e0)

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