# STC SA2947SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Granville Lasseter/dba Granville's Aircraft Strut Sealant, United States
- Description: Addition of Hydro Seal Fluid Additive to the landing gear shock struts.
- Applied: January 15, 1979
- Status date: August 8, 1980
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A7SO](https://openairdocs.org/tcds/A7SO)
- Certificate PDF: https://openairdocs.org/files/sha256/0d/cc/0dccc514f650128fd6110a72b262c2467b3391a86848eb6016aca92caa023449
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/F63F0E60A5A5494E85256CC20008CB0C.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2947SW

## ADs that name it (0)

None.

## Approved models (2)

- Piper Aircraft Inc. PA-34-200 ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))
- Piper Aircraft Inc. PA-34-200T ([TCDS A7SO](https://openairdocs.org/tcds/A7SO))

## 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.

r Sf-f&ff Duplicate copy issued on July 23, 2002 ttnitrd gtatti of awrfca Btpartment of Transportation --JFedtral auiatton administration Supplemental Ttypt Certificate

•LStu#rw€^ SA2947SW Granville Lasscter d/b/a Granvllle'a Aircraft Strut Sealant 802 E. Grant Mortem, Texas 79346 23 Federal Aviation A7SO Piper PA-34-200, PA-34-200T Addition of Hydro Seal Fluid Additive to the landing gear shock strut* according to Specifications dated 12/26/76, or later FAA approved revision.

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

January 15, 1979 21 1979 ^££iwt^ August 8, 1980 Revision 1 LZtate- o,fru*ndte/ :

• /V'v?ffSi'<ivt'iif'&es Original S-,-- . . ,. .

J- J. S.ifi-.- ( Signature } Don P. Watson Chief. Engineering and Manufacturing Branch (T.lle) ___

The FAA will reissue the certificate in the name of tha transferee and fotward it to him.

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

Signature of gr/antor (In ink)

## Every issue (1)

- August 8, 1980: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0d/cc/0dccc514f650128fd6110a72b262c2467b3391a86848eb6016aca92caa023449)

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