# STC SA4678SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Southeastern Resources Corporation
- Description: Installation of Pratt & Whitney AC L PT6A-20, -27 engine and airplane modifications to increase the maximum takeoff gross weight to 8,000 pounds.
- Status date: August 9, 1988
- Data sheets: A20SO
- Certificate PDF: https://openairdocs.org/files/sha256/bf/b4/bfb4b99c6b2c236ae17b356d14a43705a539d913280a2384ebb699e607c6a882
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C9640A61AA59267E85256CC2000E3DED.0001
- Page: https://openairdocs.org/stc/SA4678SW

## ADs that name it

None.

## Approved models (1)

- Piper Aircraft Inc. PA-31-350 (TCDS A20SO)

## 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.

ttnitd goto if 2UKriea Beparrmcnt of transportation federal atriation administration Supplemental 'Cpe Certificate <Sutm<v0r' SA4678SW Southeastern Resources Corp.

2201 Scott Avenue Fort Worth, TX 76103 ^^JA&^^ 4*r*<vn>/mc^^^ 3 ClVll Air &MtM A20SO PA31-350 Installation of Pratt & Whitney ACL PT6A-20, -27 engines and airplane modifications to increase the maximum takeoff gross weight to 8,000 Ibs. according to Drawing List No. 60,OOOL (Rev.

9) dated 7/31/84, or later FAA approved revision. Installation ofEdo-Aire Mitchell Century III Autopilot Model AK560 according to STC SA3086SW-D. Installation of Edo-Aire Mitchell Yaw Damper System Model YK849 according to STC SA3388SW-D.

"See'C'oritlnuat'iofT"Sheet, page 2 of this STC. Compatibility of this modification with previously installed equipment must be determined by installer.

4e***^ £Xe/rn*ruti&a£>r-^.4&e June 1981 1982 : 12/30/82, 3/3/88, 8/9/88 .8/9/83; 10/5/83; 1/30/85 $/v/Jc/t/rf<c&&n;^£ri^£:j£arnj/rit&lr<i/^ ^/O/*? // — ^/•S, C^^^Qg^ L. B.

Manager, Rotorcraft Directorate, Aircraft Certification Service (Title)

FAA Fout SI 10-2 (10-68)

ttnittd £tatu of anrerica Bepartment of Importation— Jfetol 2ttnation administration Supplemental Itgpe Certificate(Continuation &heet) SA4678SW Rev. 3 Limitations and Conditions:

1. FAR Approved Pilot's Operating Handbook (POH) dated May 19, 1982, (Revision 1 dated December 30, 1982) is required for Pratt & Whitney ACL PT6A-20, -27 engines and airplane modifications to increase the Waodinum takeoff gross weight.

2. EAA Approved Airplane Flight Manual Supplement dated August 9, 1983, is required with Edo-Aire Mitchell Century III Autopilot Model 2KE60.

3. FAA Approved Airplane Flight Manual Supplement dated August 9, 1983, is required with Edo-Aire Mitchell Yaw Damper System Model YK849.

4. STC SA3086SW-D is required for installation of Edo-Aire Mitchell Century III Autopilot Model AK560.

5. STC SA3388SW-D is required for installation of Edo-Aire Mitchell Yaw Damper System Model YK849.

6. Compatibility of this modification with other previously approved modifications must be determined by the installer.

-END- Atir alteration of this certificate is punishable by a fine of not exceeding SI,000, or imprisonment not exceeding 3 years, or both.

i AA FORM Biio-2-1 (10-69) This certificate may be transferred in accordance with i'AR ~1.-I7 PAGE 2 OF 2 PAGES

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) (Number and street) (City, State, and <7/> code) from (Name of grantor) (Print or type) (Address of grantor) (Number and street) (City, State, and <7P code) Extent of Authority (if licensing agreement):

Signature of grantor (In ink):

## Every issue (1)

- August 9, 1988: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/bf/b4/bfb4b99c6b2c236ae17b356d14a43705a539d913280a2384ebb699e607c6a882)

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