# STC SA2258WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Piedmont Aviation Inc, United States
- Description: The installation of Firestone 40 X 14-21 tires at 40% tire deflection per sealed Piedmont Service Evaluation Report SER Number 70-18, and Supplement "A" to Airplane Flight Manual Dt-8737, 201
- Applied: August 27, 1970
- Status date: October 19, 1970
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A16WE](https://openairdocs.org/tcds/A16WE)
- Certificate PDF: https://openairdocs.org/files/sha256/a0/8f/a08f30f80cfbfc9a88d3cd836abdc5a23f6786f485ff744e202a39e47c25e59d
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/D3F050D849F4153E8625788E0050D4F5.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA2258WE

## ADs that name it (0)

None.

## Approved models (1)

- The Boeing Company 737-200 Series ([TCDS A16WE](https://openairdocs.org/tcds/A16WE))

## What the certificate says

This is OCR from the scanned FAA certificate. OCR can misread letters and numbers.

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number SA-2258-WE This certificate issued to: Piedmont Aviat10n, Inc.

Smith Reynolds Airport Winston-Salem, North Caroline 27102 Part 25 of the Poderal AvIatIon Regulations:

Original Product Type Testificate Number: A-16-932 Make: Boeing Model: 737-203 40% tire deflection per sealed Piedmont Service Evaluation Report SER Number Description of Type Design Change: The installation of Firestone 40 » 14-21 tires 2t 70-18, and Supplement "A" to Airplane Flight Manual D6-8737,201.

Limitations and Conditions: The spproval of this change in type design applied basically to Boeing Model 737-201 only. This approval should not be extended to other sircraft of this model on which other previously approved modifications are incorporated unless it is determined by the installer that the interrelationship between this change and any of those other preriously approved modifications will introduce no adverse effect upon the airworthinese of that aircraft. This determination should include consideration of significant changes in veight distribution such as an increase in the fixed disposable weight in the fuselage.

Date of Application: 27 ArgUst 1970 Date Reissued:

Date of Issuance: 19 October 1970 Date Amended:

FEDERAL ANTATION By Direction of the Administrator Original Signed By Neith D. Anderson (Signature ) TOMNISTRATOA Leing Obief, Aircraft Engineering Division, NE-100

## Every issue (1)

- October 19, 1970: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a0/8f/a08f30f80cfbfc9a88d3cd836abdc5a23f6786f485ff744e202a39e47c25e59d)

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