# STC SA237NW

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Avcon Industries Inc
- Description: Installation of the Mark II performance system, including recontoured wing leading edge, recontoured flap leading edge, wing vortex generator removal, installation of wing stall strips and other minor refinements in accordance with Avcon Master Drawing List No. 1083 dated November 16, 2010 or later FAA approved revision.  An FAA Approved Airplane Flight Manual Supplement is required.
- Status date: November 16, 2010
- Data sheets: A5CE
- Certificate PDF: https://openairdocs.org/files/sha256/8a/5c/8a5c96ccdeb8c361a2c65ad0c42bec606885ea496c0dbf34927eaeefd287f0d3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/74FC15543647F599862579650072B8B0.0001
- Page: https://openairdocs.org/stc/SA237NW

## ADs that name it

None.

## Approved models (1)

- Learjet Inc. Learjet 23 (TCDS A5CE)

## 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.

This certificate issued to: AVCON Industries, Inc 714 N. Oliver Road Newton, KS 67114-9444

Part 3 of the Civil Air Regulations,

Original Product - Type Certificate Number: A5CE Make: Learjet, Inc Model: 23

Description of Type Design Change: Installation of the Mark II performance system, including recontoured wing leading edge, recontoured flap leading edge, wing vortex generator removal, installation of wing stall strips and other minor refinements in accordance with Avcon Master Drawing List No. 1083 dated November 16, 2010 or later FAA approved revision. An FAA Approved Airplane Flight Manual Supplement is required.

Limitations and Conditions: The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. A copy of this Certificate and Addendum No. SA237NW shall be maintained as part of the permanent records for the modified aircraft.

Date of application: March 10, 1975

Date of issuance: January 16, 1976

Date reissued: December 01, 1999; June 03, 2010;

November 16, 2010

Date amended: May 17, 2001; June 12, 2001

Original signed by Grant E. Youngdahl

( Signature) Grant E. Youngdahl Program Manager Wichita Airplane Certification Office

(Title)

## Every issue (1)

- November 16, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8a/5c/8a5c96ccdeb8c361a2c65ad0c42bec606885ea496c0dbf34927eaeefd287f0d3)

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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.