# STC SA2957SW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Granville Lasseter/dba Granville's Aircraft Strut Sealant
- Description: Addition of Hydro Seal Fluid Additive to the landing gear shock struts.
- Status date: August 8, 1980
- Data sheets: 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4, 5A4
- Certificate PDF: https://openairdocs.org/files/sha256/a3/01/a30149e7e0aec5b90c753c26277e6b78508607d670d05a209961791296411642
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EDE65F995F123AAE85256CC20008CB2B.0001
- Page: https://openairdocs.org/stc/SA2957SW

## ADs that name it

None.

## Approved models (14)

- Beechcraft Corporation 50 (TCDS 5A4)
- Beechcraft Corporation B50 (TCDS 5A4)
- Beechcraft Corporation C50 (TCDS 5A4)
- Beechcraft Corporation D50 (TCDS 5A4)
- Beechcraft Corporation D50A (TCDS 5A4)
- Beechcraft Corporation D50B (TCDS 5A4)
- Beechcraft Corporation D50C (TCDS 5A4)
- Beechcraft Corporation D50E (TCDS 5A4)
- Beechcraft Corporation D50E-5990 (TCDS 5A4)
- Beechcraft Corporation E50 (TCDS 5A4)
- Beechcraft Corporation F50 (TCDS 5A4)
- Beechcraft Corporation G50 (TCDS 5A4)
- Beechcraft Corporation H50 (TCDS 5A4)
- Beechcraft Corporation J50 (TCDS 5A4)

## 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 ttnftrd jtitatts tf amrrica Bqrartmntt of transportation — federal Station administration Supplemental t^pe Certificate *.sKt#m>v€>r'SA2957SW Graiiville Laseeter d/b/a Granville's Aircraft Strut Sealant 802 E. Grant Morton, Texas 79346 '^;.^^ Civil Air3 iat 3A4 Beech 50, B50, C50, D50, D50A, D50B, D50C, D50E, D50E-5990. E50, F50, G50, H50, J50 Addition of Hydro Seal Fluid 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 be determined by the Installer.

January 16, 1979 March 21, 1979 w August 8, 1980 Revision 1 T T i£f, a . £-i;;i,-, (Signature) Don P. Watson Chief, Engineering and Manufacturing Branch

This ceilificale may bt tiansftrred in accordance with FAR 2I.f7.

FAA FoiM 8 I 10-3 (10-69)

TRANSFER ENDORSEMENT Transfer tha 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 OJT 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/a3/01/a30149e7e0aec5b90c753c26277e6b78508607d670d05a209961791296411642)

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From OpenAirDocs.org, an independent open copy of FAA data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.