# STC ST00171CH

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Norton Company, United States
- Description: Installation of Radome.
- Applied: February 1, 1993
- Status date: March 1, 2000
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A20WE](https://openairdocs.org/tcds/A20WE)
- Certificate PDF: https://openairdocs.org/files/sha256/29/d3/29d3b95943fe819830f1db4d3f0b5b5b8f8b5fadc567f512585d9a01246ceaeb
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7981CAB6A73C1EFE8625794F004DE20F.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00171CH

## ADs that name it (0)

None.

## Approved models (12)

- The Boeing Company 747-100 Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-100B SUD Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-100B 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))
- The Boeing Company 747-400D Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747-400F Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747SP Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))
- The Boeing Company 747SR Series ([TCDS A20WE](https://openairdocs.org/tcds/A20WE))

## What the certificate says

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

ІНСІ United States of America SN3075CH-7 Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00171CH This certificate issued to: Norton Performance Plastics Corporation 335 N. Diamond St.

Ravenna, OH 44266 Surt 25 of the Federal Aviation Poegululions (See Type Certificate Data Sheet Number A2OWE for the complete certification basis).

Original Product Type Certificate Number: A20WE Make: BOEING Model: 747-100, 747-100B, 747-200B, 747-200C, 747-200F, 747SR, 747SP, 747-300, 747-100B SUD, 747-400, 747-400D, Description of Type Design Change: 747-400F Series Installation of Radome in accordance with Norton Installation Instructions NI-4892, Revision A dated October 6, 1999, or later FAA approved revisions.

1. Compatibility of this design change with previously approved modifications must be determined by the installer.

2. This approves only the installation of the radome and does not include the radar system.

3. For transmission efficiency data, refer to Installation Instructions NI-4892, Revision A, dated October 6, 1999, or later FAA approved revisions.

4. If the installer 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.

Date of Application: February 1, 1993 Date Reissued:

Dule of issuence: March 9, 1994 Date Amended: March 1, 2000 By Direction of the Administrator FEDERAL AVIATION Тани Ulen A. Shu (Signature) Mary Elley A. Schutt TOMNISTRATO Chicago Aircraft Certification Office Manager, Airframe and Administrative Branch (Title)

## Every issue (1)

- March 1, 2000: Amended, Current. [certificate](https://openairdocs.org/files/sha256/29/d3/29d3b95943fe819830f1db4d3f0b5b5b8f8b5fadc567f512585d9a01246ceaeb)

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