# STC SA3501SW

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Frakes Aviation, Inc, United States
- Description: Installation of Pratt & Whitney of Canada PT6-27/28 or PT6A-34/34B or PT6A-110/-112 flat rated to 550 HP engines.
- Applied: July 8, 1985
- Status date: July 20, 1994
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS 3A20](https://openairdocs.org/tcds/3A20)
- Certificate PDF: https://openairdocs.org/files/sha256/60/03/60037244cc02e2b9a3c427685608c9db5fc33318086b96d3f7480e4fcbdf0725
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/ACE93998C745423086257DC4006E3F63.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA3501SW

## ADs that name it (0)

None.

## Approved models (2)

- Beechcraft Corporation B90 ([TCDS 3A20](https://openairdocs.org/tcds/3A20))
- Beechcraft Corporation C90 ([TCDS 3A20](https://openairdocs.org/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.

United States of amcrica Bepartment of transportation — federal aviation administration Supplemental t:jjpe Certificate Frakes Aviation Route 3, Box 229-B Cleburne, TX 76031 SA3501SW 150-625 CDS 3 /^^ Civil Air . Srf/ctetcS —— , s/ufiv f}<er/<fi*:a/t^./lu/ 3 A2 0 BEECH 65-B90, 65-C90 fssLafiM? :

Installation of Pratt & Whitney of Canada PT6-27/-28, PT6A-34/-34B or PT6A-110/-112 flat rated to 550 hp engines in accordance with Frakes Aviation Master Drawing List FA5800, Revision B, dated 07/20/94, or later FAA approved revision.

.— /<}/tt/ff/« -st*)- S/ *ts/ ( s< A^r/vV^/'/^J FAA approved Airplane Flight Manual Supplement dated September 19, 1985, is required for the PT6-27/-28 installation, FAA approved Airplane Flight Manual Supplement dated July 25, 1986 for the PT6A-34/-34B installation or FAA approved Airplane Flight Manual Supplement dated July 20, 1994, for the PT6A-110/-112 installation.

See continuation sheet & a tit/ /Sit Jjj/t/x^rSirts/d/ti <f</i<fft iA Wi /wn S'/efrru niA/* ,- July 8, 1985/i-t-rt •* September 19, 1985t . *-/•' <* t^ , //.Rev.l, 9/5/86; Rev. 2, 7/20/94*t//tssM&x/- ' i i ^ I ^- . y uchele M. OtfSS/gy1, Manager Airplane Certification'Office (Title)

FAAFo«M 8110-2(10-68!

United States of America Bepattment of Itonsportation— federal 2tt)iation administration upplemental t:gpe Certificate(Continuation SA3501SW<s&Mn&e0>Limitations and Conditions:

Supplemental Type Certificate SA8935SW is required to be installed for the PT6A-110/-112 engine installation.

Compatibility of this modification with previously installed equipment must be determined by installer.

FAA FORM 8110-2-1 (10-69) 2 o

**PAGE OF PAGES C FAA AC 82-03578**

.NSTRUCTIONS: The transfer endorsement be.ow may be used to notify .he appropriate FAA Regional Office of (he transfer of ihii Supplemental Type Certificate.

The FAA will reinuc the certificate in the name of ihe transferee and forward it to him.

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee)__ (Address of transferee). { Xiimkcr out strut) from (Name of grantor) (Print or type).

(Address of grantor) —— (Xumktr tint Urttt) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- July 20, 1994: Amended, Current. [certificate](https://openairdocs.org/files/sha256/60/03/60037244cc02e2b9a3c427685608c9db5fc33318086b96d3f7480e4fcbdf0725)

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