# STC SA00944CH

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Hartzell Engine Technologies, LLC, United States
- Description: Replace Janitrol combustion heater Model 81D94-X (XX) with C&D Associates combustion heater Model CD25K, CD35K, and CD45K
- Applied: June 10, 1998
- Status date: February 11, 2016
- Product: Aircraft, Small Airplane
- Certification basis: Part 21
- Data sheets: [TCDS A17WE](https://openairdocs.org/tcds/A17WE), [TCDS A17EU](https://openairdocs.org/tcds/A17EU), [TCDS 3A16](https://openairdocs.org/tcds/3A16), [TCDS A23CE](https://openairdocs.org/tcds/A23CE), [TCDS A12CE](https://openairdocs.org/tcds/A12CE), [TCDS A29CE](https://openairdocs.org/tcds/A29CE), [TCDS A-765](https://openairdocs.org/tcds/A-765), [TCDS H2SW](https://openairdocs.org/tcds/H2SW), [TCDS A14EA](https://openairdocs.org/tcds/A14EA), [TCDS 1A10](https://openairdocs.org/tcds/1A10), [TCDS A1EA](https://openairdocs.org/tcds/A1EA), [TCDS A20SO](https://openairdocs.org/tcds/A20SO), [TCDS A8EA](https://openairdocs.org/tcds/A8EA), [TCDS A7SO](https://openairdocs.org/tcds/A7SO), [TCDS A19SO](https://openairdocs.org/tcds/A19SO), [TCDS A37CE](https://openairdocs.org/tcds/A37CE), [TCDS 3A10](https://openairdocs.org/tcds/3A10), [TCDS 3A25](https://openairdocs.org/tcds/3A25), [TCDS A6CE](https://openairdocs.org/tcds/A6CE), [TCDS A7CE](https://openairdocs.org/tcds/A7CE) and 3 more
- Certificate PDF: https://openairdocs.org/files/sha256/e1/1f/e11ff29acd759abc07bf74639e4d32d20c658e51bdcfd0237a049228025a7b18
- Approved model list and other attachments: [AML_SA00944CH.pdf](https://openairdocs.org/files/sha256/d7/90/d790947252c9d0f64fe58bfd06630d83eb48cd9883e8d78b67814d3cf7049928)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E0CB9DCDD4FA120186257FAF006D0582.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA00944CH

## ADs that name it (0)

None.

## Approved models (109, first 50)

- Aerostar Aircraft Corporation PA-60-600 (Aerostar 600) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- Aerostar Aircraft Corporation PA-60-601P (Aerostar 601P) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- Aerostar Aircraft Corporation PA-60-602P (Aerostar 602P) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- Aerostar Aircraft Corporation PA-60-700P (Aerostar 700P) ([TCDS A17WE](https://openairdocs.org/tcds/A17WE))
- B-N Group Ltd. BN-2 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- B-N Group Ltd. BN-2A ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- B-N Group Ltd. BN-2A-6 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- B-N Group Ltd. BN-2A-8 ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- B-N Group Ltd. BN-2T ([TCDS A17EU](https://openairdocs.org/tcds/A17EU))
- Beechcraft Corporation 58 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation 58P ([TCDS A23CE](https://openairdocs.org/tcds/A23CE))
- Beechcraft Corporation 58TC ([TCDS A23CE](https://openairdocs.org/tcds/A23CE))
- Beechcraft Corporation 60 ([TCDS A12CE](https://openairdocs.org/tcds/A12CE))
- Beechcraft Corporation 76 ([TCDS A29CE](https://openairdocs.org/tcds/A29CE))
- Beechcraft Corporation 95-B55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Beechcraft Corporation A60 ([TCDS A12CE](https://openairdocs.org/tcds/A12CE))
- Beechcraft Corporation D18S ([TCDS A-765](https://openairdocs.org/tcds/A-765))
- Beechcraft Corporation E55 ([TCDS 3A16](https://openairdocs.org/tcds/3A16))
- Bell Helicopter Textron Canada Limited 206A ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206B ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bell Helicopter Textron Canada Limited 206L ([TCDS H2SW](https://openairdocs.org/tcds/H2SW))
- Bombardier Inc. CL-215-1A10 ([TCDS A14EA](https://openairdocs.org/tcds/A14EA))
- Bombardier Inc. CL-215-6B11 (CL-215T Variant) ([TCDS A14EA](https://openairdocs.org/tcds/A14EA))
- Bombardier Inc. CL-215-6B11 (CL-415 Variant) ([TCDS A14EA](https://openairdocs.org/tcds/A14EA))
- Piper Aircraft Inc. PA-23 ([TCDS 1A10](https://openairdocs.org/tcds/1A10))
- Piper Aircraft Inc. PA-30 ([TCDS A1EA](https://openairdocs.org/tcds/A1EA))
- Piper Aircraft Inc. PA-31 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-300 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-325 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31-350 ([TCDS A20SO](https://openairdocs.org/tcds/A20SO))
- Piper Aircraft Inc. PA-31P ([TCDS A8EA](https://openairdocs.org/tcds/A8EA))
- Piper Aircraft Inc. PA-31T ([TCDS A8EA](https://openairdocs.org/tcds/A8EA))
- Piper Aircraft Inc. PA-31T1 ([TCDS A8EA](https://openairdocs.org/tcds/A8EA))
- Piper Aircraft Inc. PA-31T3 ([TCDS A8EA](https://openairdocs.org/tcds/A8EA))
- Piper Aircraft Inc. PA-34-200 ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-34-200T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-34-220T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-39 ([TCDS A1EA](https://openairdocs.org/tcds/A1EA))
- Piper Aircraft Inc. PA-44-180 ([TCDS A19SO](https://openairdocs.org/tcds/A19SO))
- Piper Aircraft Inc. PA-44-180T ([TCDS A19SO](https://openairdocs.org/tcds/A19SO))
- Textron Aviation Inc. 208 ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))
- Textron Aviation Inc. 208B ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))
- Textron Aviation Inc. 310 ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310A ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310B ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310C ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310D ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310E ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310F ([TCDS 3A10](https://openairdocs.org/tcds/3A10))
- Textron Aviation Inc. 310G ([TCDS 3A10](https://openairdocs.org/tcds/3A10))

All 109: https://openairdocs.org/stc/SA00944CH/models.md

## 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.

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

Number SA00944CH This certificate issued to

Part 3 of the Federal Aviation Regulations.

Replace Janitrol combustion heater Model 81D94-X (XX) with C&D Associates combustion heater Model CD25K, CD35K, and CD45K in accordance with C&D Heater Installation Instructions as listed on AML No. SA00944CH, dated June 20, 2000, or later FAA Approved revision.

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

2. Full compliance with the C&D Combustion Heater Airworthiness Limitations, First Edition, Rev. B, dated January 1, 2000, or later FAA Approved revision is required. 3. A copy of this Certificate and FAA Approved Model List (AML) No.

SA00944CH, dated June 20, 2000, or later FAA approved revision, must be maintained as part of the permanent records for the modified aircraft. 4. 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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Hartzell Engine Technologies LLC 2900 Selma Highway Montgomery, Alabama 36108

*See attached FAA Approved Model List (AML) No.

Make : SA00944CH for list of approved airplane models and Model : applicable airworthiness regulations.

Date reissued : February 11, 2016

Date amended : February 23, 2000, June 20, 2000

(Signature) Timothy P. Smyth Manager, Chicago Aircraft Certification Office

(Title)

Date of application: June 10, 1998

Date of issuance : September 28, 1998

Transfer the ownership of Supplemental Type Certificate Number

to (Name of transferee)

(Address of transferee)

(Number and street)

(City, State, and Zip code)

from (Name of grantor) (Print or type)

(Address of grantor)

(Number and street)

(City, State, and Zip code)

Signature of grantor (In ink):

### AML_SA00944CH.pdf

Page 1 of 7

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS

Date of Issuance: September 28, 1998

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. Aerostar PA-60-600, PA-60-601P, PA-60-602P, PA-60-700P A17WE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

2. Bell 206A, 206B, 206L H2SW FAR 21.29 CAR 6 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

3. Bombardier CL-215-1A10, CL-215-6B11 (CL-215T Variant), CL-215-6B11 (CL-415 Variant) A14EA FAR 21.29 FAR 25 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

4.

Pilatus Britten Norman BN-2 BN-2A, BN-2A-6, BN-2A-8, BN-2T A17EU FAR 23 FAR 21.29 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6.20/2000

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS Page 2 of 7

Date of Issuance: September 28, 1998

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**

5. Cessna 208, 208A, 208B A37CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

6. Cessna T303 A34CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

7. Cessna 310, 310A, 310B, 310C, 310D, 310E, 310F, 310G, 310H, E310H, 310I, 310J, 310J-1, E310J, 310K, 310L, 310N, 310P, 310Q, T310Q, 310R 3A10 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS Page 3 of 7

Date of Issuance: September 28, 1998

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**

8. Cessna 320, 320-1, 320A, 320B, 320C, 320D, 320E, 320F, 335, 340, 340A 3A25 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

9. Cessna 337, 337A, 337B, T337B, 337C, T337C, 337D, T337D, 337E, T337E, 337F, T337F, 337G, T337G, 337H, T337H, M337B A6CE FAR 23 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

10. Cessna 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A, 421, 421A, 421B, 421C A7CE CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS Page 4 of 7

Date of Issuance: September 28, 1998

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**

11. Cessna 404 A25CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

12. Piper PA-23 1A10 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

13. Piper PA-30 S/N 30-402 and up, PA-39 A1EA CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

14. Piper PA-31, PA-31-300, PA-31-325, PA-31-350 A20SO FAR 23 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6.20/2000

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS Page 5 of 7

Date of Issuance: September 28, 1998

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**

15. Piper PA-31T PA-31T1, PA-31T3 PA-31P A8EA CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

16. Piper PA-34-200, PA-34-200T, PA-34-220T A7SO FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

17. Piper PA-44-180, PA-44-180T A19SO FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

18. Raytheon (Beech) 58P A23CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6.20/2000

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS Page 6 of 7

Date of Issuance: September 28, 1998

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**

19. Raytheon (Beech) 58TC A23CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

20. Raytheon (Beech) 60, A60 A23CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

21. Raytheon (Beech) 76 A29CE FAR 23 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

22. Raytheon (Beech) 95-B55 S/N TC-1658 and up, E55 S/N TE-959, TE-968 and up, 58 S/N TH-437 and up 3A16 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6.20/2000

**FAA APPROVED MODEL LIST (AML) NO. SA00944CH**

HARTZELL ENGINE TECHNOLOGIES LLC FOR INSTALLING MODEL CD25K, CD35K AND CD45K COMBUSTION HEATERS Page 7 of 7

Date of Issuance: September 28, 1998

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**

23. Raytheon (Beech) D18S A-765 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000 24 Twin Commander 500-S 6A1 CAR 3 IN81D94 REV. C Dated 6/5/2000 or later FAA approved revision N/A 6/20/2000

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

Date Amended: February 23, 2000 June 20, 2000

Date reissued: February 11, 2016

## Every issue (1)

- February 11, 2016: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/e1/1f/e11ff29acd759abc07bf74639e4d32d20c658e51bdcfd0237a049228025a7b18), [AML_SA00944CH.pdf](https://openairdocs.org/files/sha256/d7/90/d790947252c9d0f64fe58bfd06630d83eb48cd9883e8d78b67814d3cf7049928)

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