# STC SA10370SC

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Metrea Special Aerospace ISR Inc.
- Description: Installation of exhaust gas extractors on Pratt & Whitney Canada PT6A-21, -28, -29, -34, -34B, -135, or -135A turboprop engines
- Status date: May 6, 2025
- Data sheets: 3A20, 3A20, 3A20, 3A20, 3A20, 3A20
- Certificate PDF: https://openairdocs.org/files/sha256/0b/a7/0ba7c9b94aeeace4c799b146f96f55874a0d8706df197b4af1c2dfbcda484bf3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126096646520250714141215.0001
- Page: https://openairdocs.org/stc/SA10370SC

## ADs that name it

None.

## Approved models (6)

- Textron Aviation Inc. 65-90 (TCDS 3A20)
- Textron Aviation Inc. 65-A90 (TCDS 3A20)
- Textron Aviation Inc. B90 (TCDS 3A20)
- Textron Aviation Inc. C90 (TCDS 3A20)
- Textron Aviation Inc. C90A (TCDS 3A20)
- Textron Aviation Inc. H90 (TCDS 3A20)

## 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.

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Original Product 7\SH&HUWLILFDWH1XPEHU Make:

SA10370SC Metrea Special Aerospace, ISR Inc.

1100 N. Broadway Ave, Suite 200 Oklahoma City, OK 73103 Part 3 Civil Air Regulations 3A20 Textron Aviation (Beechcraft) 65-90, 65-A90, -B90, -C90, -E90, -H90, Installation of exhaust gas extractors on Pratt & Whitney Canada PT6A-21, -28, -29, -34, -34B, -135, or -135A turboprop engines. Data required:

1. Commuter Air Technology Master Drawing List No. DL02001, Rev. 8, dated October 8, 2004, or later FAA Approved revision.

1. The airspeed and shaft horsepower limits listed in the Airplane Flight Manuals (AFM) within TCDS 3A20 are still applicable.

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

January 25, 2003 May 6, 2025 December 20, 2004 for Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 2

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Too (Name and address of transferee):

Date oI transfer:

SA10370SC 2

## Every issue (2)

- May 6, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0b/a7/0ba7c9b94aeeace4c799b146f96f55874a0d8706df197b4af1c2dfbcda484bf3)
- December 20, 2004: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/83/0f/830f5ec69eda2104e7c90e38abbabdd1862a0e34157b4d5d585cfe3ab71f94a3)

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