# STC ST04481CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Butler National Corporation
- Description: Replacement of similar functioning circuit and switch for obsolete steering interface unit (SIU) in accordance with Butler National Master Data List 0200 I 020 Revisio n (A) , dat ed 14 MAY 2021, or later FAA Approved Revision.
- Status date: May 18, 2021
- Data sheets: A10CE, A10CE, A10CE, A10CE
- Certificate PDF: https://openairdocs.org/files/sha256/12/30/1230b3cd01490cf2e50a02a025d28164d35eaf1be78ddcdb36efe798e473d540
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A427DAAD23B3B05E862586E1000F5814.0001
- Page: https://openairdocs.org/stc/ST04481CH

## ADs that name it

None.

## Approved models (4)

- Learjet Inc. 35 (TCDS A10CE)
- Learjet Inc. 35A (C-21A) (TCDS A10CE)
- Learjet Inc. 36 (TCDS A10CE)
- Learjet Inc. 36A (TCDS A10CE)

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- May 18, 2021: Issued, Current. [certificate](https://openairdocs.org/files/sha256/12/30/1230b3cd01490cf2e50a02a025d28164d35eaf1be78ddcdb36efe798e473d540)

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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.