# STC SA12477AK

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Wright Air Service, Inc., United States
- Description: Installation of a PT6A-140 engine
- Applied: February 20, 2026
- Status date: October 28, 2026
- Product: Aircraft, Rotorcraft
- Certification basis: Part 23
- Data sheets: [TCDS A37CE](https://openairdocs.org/tcds/A37CE)
- Certificate PDF: https://openairdocs.org/files/sha256/1f/4d/1f4d7c72dc69291cd6b4fb0d0e51ce0f2554766f602ba36e4921b9fe4f1ce745
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID159877399120261102184728.0001
- DRS record last changed: November 2, 2026
- Page: https://openairdocs.org/stc/SA12477AK

## ADs that name it (0)

None.

## Approved models (1)

- Textron Aviation Inc. 208B ([TCDS A37CE](https://openairdocs.org/tcds/A37CE))

## 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.

Number: SA12477AK

Part 23 of the Federal Aviation Regulations.

Original Product Make: Textron Aviation Inc.

Type Certificate Number: A37CE Model: 208B Description of Type Design Change:

1) Data pertaining to this modification is considered inadequate for duplication in other aircraft. This approval for change in type design is limited to Textron Aviation Inc. model 208B, serial number 208B1314 only.

2) “Blackhawk PT6A-140 Engine Installation with TKS Aircraft Flight Manual Supplement” Doc. No. WA-140-TKS-AFMS, Rev. IR, dated September 2, 2026, or later FAA approved revision is a required part of this installation.

Date of Application: February 20, 2026 Date Reissued:

Date of Issuance: October 28, 2026 Date Amended:

Title: for Gregory S. DiLibero Title: Manager, West Certification Branch

Wright Air Service, Inc.

PO Box 60142 Fairbanks, AK 99706

Installation of a PT6A-140 engine in accordance with Installation Instructions WA-140-TKS-INST, Rev.

IR, September 15, 2026, and Blackhawk STC SA02546LA with existing TKS deice system for Flight Into Known Icing.

Number: SA12477AK Effective Date: October 28, 2026

Transfer Endorsement Transfer the ownership of Supplemental Type Certificate Number: SA12477AK

## Every issue (1)

- October 28, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/1f/4d/1f4d7c72dc69291cd6b4fb0d0e51ce0f2554766f602ba36e4921b9fe4f1ce745)

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