# STC SA2960SW

- 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 16, 1979
- Status date: August 8, 1980
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-684](https://openairdocs.org/tcds/A-684)
- Certificate PDF: https://openairdocs.org/files/sha256/38/6e/386e0aa45c512ed6e7aca43fb88e94b8f89f6cbb39722feb1af65d5254442c79
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/65B1B94C331046AB85256CC20008CB37.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2960SW

## ADs that name it (0)

None.

## Approved models (3)

- Beechcraft Corporation 18D ([TCDS A-684](https://openairdocs.org/tcds/A-684))
- Beechcraft Corporation A18A ([TCDS A-684](https://openairdocs.org/tcds/A-684))
- Beechcraft Corporation A18D ([TCDS A-684](https://openairdocs.org/tcds/A-684))

## 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.

Duplicate copy issued on July 23, 2002 'ttmtri grata of Slmmca Beparrmtnt of ttonsportation — JNtral Stoiation administration Supplemental tiujE Certificate Cpraoerce faff/a &t>n fciftai SA2960SW GrBnville tassster d/b/a GranviUa'a Aircraft Strut Saalant 802 E, Grant Mortem, Texas 75346 Aero. Bulletin 7a *>^ / iV'/rtf, Bureau of '^ lavneev- : 4*584 Beech 18D, A18A, A18D .: Addltlon of Hyaro seal Flutd Additive to the landing gear shock struts 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.

a^ January 16, 1979 t- 1979 August 8, 1980 Revision i //w Original j ,T (Signature) Don P. Watson Chief, Engineering and Manufacturing Branch

FAA fot-t 81 10-2 I 10-ASI

TRANSFER ENDORSEMENT Transfer the ownership of Supplemental Type Certificate Number to (Name of transferee) (Address of transferee) ___ (Number and street) (City, State, and ZIP coda) 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 grantor (In ink):

## Every issue (1)

- August 8, 1980: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/38/6e/386e0aa45c512ed6e7aca43fb88e94b8f89f6cbb39722feb1af65d5254442c79)

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