# STC SA4504NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: TC SKYROCKET LLC, United States
- Description: Installation of an Intercooler in the air induction system of both engines. (T337G S/N P3370001 - P3370292 EXCEPT P3370109 AND P3370196) (P337H S/N P3370293 - P3370356 AND P3370196)
- Applied: July 2, 1987
- Status date: November 10, 2009
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A6CE](https://openairdocs.org/tcds/A6CE)
- Certificate PDF: https://openairdocs.org/files/sha256/a2/11/a211d32d73b1c5ba52232e9aca4cd63557f0bf2d5d7c0902532907be063fa325
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/04010F19755459688625769A006D410F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4504NM

## ADs that name it (0)

None.

## Approved models (2)

- Cessna Aircraft Company P337H ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))
- Cessna Aircraft Company T337G ([TCDS A6CE](https://openairdocs.org/tcds/A6CE))

## 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.

This Certificate issued to TC SKYROCKET LLC 356 Expressway CT Gaylord, Michigan 49733 Part 23of the Federal Aviation r Regulations dated February 1, 1965, as amended by 23-1 through 23-3.

A6CE

Cessna

T337G, S/N P3370001-P3370292, except P3370109 & P3370196; P337H, S/N P3370293-P3370356, & P3370196 Description of Type Design Change:

See Page 3 of this Supplemental Type Certificate for description of type design change.

Limitations and Conditions: The approval of this change in type design is restricted to the Cessna T337G and T337H series aircraft identified above, equipped with factory installed turbochargers that are otherwise unmodified. Aircraft which have previously approved modifications shall not be modified by this STC, unless it is determined that the interrela tionship between this change and any previously approved modifications will introduce no adverse effect upon the airworthiness of that aircraft. If the holder agrees to permit another person to use this certif icate 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.

Date of application: July 2, 1987

Date of issuance: October 4, 1988

Date reissued: July 22, 1992, March 3, 1998, July 18, 2000, November 10, 2009

Date amended: March 27, 1989

( Signature) Supervisor, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

NOTE:

**DO NOT DELETE THIS PAGE.**

**DO NOT ADD ANY DATA TO THIS PAGE.**

**THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.**

Number SA4504NM

Date of application: July 2, 1987 Date of issuance: October 4, 1988 Date reissued: July 22, 1992, March 3, 1998, July 18, 2000, November 10, 2009 Date amended: March 27, 1989

Installation of an Intercooler in the air induction system of both engines in accordance with the aircraft portion of FAA sealed Riley International Corporation Master Drawing List R2000, Revision A, dated February 7, 1989, or later FAA approved revisions to this document.

Supplemental Type Certificate No. SE4505NM is required as part of this installation.

For P337H, S/N P3370293 through P3370318, FAA approved Riley International Corporation Supplemental Airplane Flight Manual No. 1, dated September 30, 1988, or later FAA approved revision is required.

For P337H, S/N P3370319 through P3370356 and P3370196, Riley International Corporation Pilots Operating Handbook (POH) and FAA approved Airplane Flight Manual Supplement No. 1 to Cessna Model P337H Airplane POH-AFM, dated September 30, 1988, or later FAA approved revision is required.

For T337G, S/N P3340001 through P3370225, except P3370109 and P3370196, FAA approved Riley International Corporation Supplemental Airplane Flight Manual No. 3, dated March 27, 1989, or later FAA approved revision is required.

For T337G, S/N P3370226 through P3370292, FAA approved Riley International Corporation Supplemental Airplane Flight Manual No. 2, dated March 22, 1989, or later FAA approved revision is required.

-END-

## Every issue (1)

- November 10, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a2/11/a211d32d73b1c5ba52232e9aca4cd63557f0bf2d5d7c0902532907be063fa325)

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