# STC SA02741CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Kelly Aerospace Thermal Systems LLC, United States
- Description: Replacement of factory installed engine driven air conditioning system compressor and alternator with electrically driven air conditioning system compressor and 100 ampere alternator and associated components
- Applied: February 6, 2009
- Status date: July 20, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A00003SE](https://openairdocs.org/tcds/A00003SE)
- Certificate PDF: https://openairdocs.org/files/sha256/8f/c6/8fc6738656169b1fe8fb3680faa59b29460ef57187ad70c9a5f5f4b7b29836da
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/61496F3222142549862576090040A088.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA02741CH

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company LC41-550FG ([TCDS A00003SE](https://openairdocs.org/tcds/A00003SE))
- Cessna Aircraft Company LC42-550FG ([TCDS A00003SE](https://openairdocs.org/tcds/A00003SE))

## 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 23 of the Federal Aviation Regulations.

Original Product--Type Certificate Number : A00003SE

Make : Cessna

Model : LC41-550FG, LC42-550FG

Description of Type Design Change: Replacement of factory installed engine driven air conditioning system compressor and alternator with electrically driven air conditioning system compressor and 100 ampere alternator and associated components in accordance with Kelly Aerospace Thermal Systems Drawing List, Document No. NC-09-030, revision C, dated July 16, 2009 or later FAA approved revisions.

1. Airplane Flight Manual Supplement, Kelly Aerospace Thermal Systems Document No. NC-09-034, revision A, dated July 7, 2009, or later FAA approved revisions, is required on board the modified aircraft.

2. Instructions for Continued Airworthiness, Kelly Aerospace Thermal Systems Document No. NC-09-033, revision E, dated July 16, 2009, or later FAA approved revisions, should be incorporated into the aircraft maintenance program.

3. A copy of this certificate must be maintained as part of the permanent records for the modified aircraft.

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

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.

Kelly Aerospace Thermal Systems, LLC 1625 Lost Nation Road Willoughby, OH 44094

Date of application : February 6, 2009

Date of issuance : July 20, 2009

( Signature)

Steven L. Lardinois Manager, Systems and Flight Test Branch Chicago Aircraft Certification Office

( Title)

## Every issue (1)

- July 20, 2009: Issued, Current. [certificate](https://openairdocs.org/files/sha256/8f/c6/8fc6738656169b1fe8fb3680faa59b29460ef57187ad70c9a5f5f4b7b29836da)

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