# STC SA3187SO

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Purolator Facet, Inc, United States
- Description: Installation of a replacement coalescer filter, Greentree Aerotech, Inc. (GAI) P/N 25TD47.
- Applied: May 21, 1991
- Status date: October 19, 2017
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/84/b1/84b16929c1998631128033bde5da014784aa8e627f6ed2df2b691dd178473093
- Approved model list and other attachments: [SA3187SO_AML.pdf](https://openairdocs.org/files/sha256/d2/0e/d20ed78b513d74327f61049d2309a24b71a1de6031dd7628706678ed3e4d40ef)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BDA5398315011606862581F5004AFC40.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA3187SO

## ADs that name it (0)

None.

## Approved models (6)

- The Boeing Company 747-100 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200B Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200C Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-200F Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-300 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-400 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## 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.

FAA Form 8110-2 (5/14) Page 1 of

Part of the

Signature

Title SA3187SO Purolator Facet, Inc.

8439 Triad Drive Greensboro, NC 27409 * Federal Aviation Regulations.

*See attached FAA Approved Model List (AML) No. SA3187SO for list of approved airplane models and applicable airworthiness regulations.

2 Installation of Keddeg Company P/N 25TD47 Coalescer Assembly. See attached FAA AML No. SA3187SO for required data.

Compatibility of this design change with previously approved modifications must be determined by the installer. If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

October 10, 1996, October 19, 2017 December 03, 2004 May 21, 1991 March 17, 1992 Tina Miller Manager, Program Management Section Wichita ACO Branch

FAA Form 8110-2 (5/14) Page 2 of

To (Name and address of transferee)

From (Name and address of grantor)

2 SA3187SO

### SA3187SO_AML.pdf

FAA Approved Model List (AML) No. SA3187SO

Installation of Keddeg Company P/N 25TD47 Coalescer Assembly

Original Issue Date: March 17, 1992 1 of 1

**ITEM AIRCRAFT MAKE AIRCRAFT MODEL**

**ORIGINAL TYPE**

**CERTIFICATE NUMBER**

**CERTIFICATION**

**BASIS FOR**

**ALTERATION**

**INSTALLATION**

**INSTRUCTIONS AFMS**

**NUMBER / DATE AML**

AMENDMENT DATE DWG. NUMBER REVISION DATE 1 Boeing 747-100, 747-200B, 747-200F, 747-200C, 747SR, 747SP, 747-100B, 747-300, 747-100B SUD, 747-400, 747-400D, 747-400F A20WE FAR 25 KID-25TD47 Rev. (-) 8/9/04 N/A 8/9/04

NOTE: AML added to STC SA3187SO on 8/9/04

NOTE: the AML is applicable only to aircraft serial numbers called out on Keddeg Co. Drawing list KDL-25TD47

FAA Approved: __Original signed by Tina Miller _________________ Tina Miller Manager, Program Management Section Wichita ACO Branch

Reissued: 10/19/17

## Every issue (2)

- October 19, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/84/b1/84b16929c1998631128033bde5da014784aa8e627f6ed2df2b691dd178473093), [SA3187SO_AML.pdf](https://openairdocs.org/files/sha256/d2/0e/d20ed78b513d74327f61049d2309a24b71a1de6031dd7628706678ed3e4d40ef)
- December 3, 2004: Amended, Historical. [certificate](https://openairdocs.org/files/sha256/ac/16/ac169583f3a3b00697bc1ea196849863fde63d526ed165576d5124595b4f31b6)

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