# STC SA4531NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: International Motors Company, United States
- Description: Replace 100 watt landing light with a 250 watt lamp.
- Applied: July 15, 1988
- Status date: January 25, 2006
- Product: Aircraft, Single-Engine
- Certification basis: Part 21, Part 23
- Data sheets: [TCDS A12SO](https://openairdocs.org/tcds/A12SO)
- Certificate PDF: https://openairdocs.org/files/sha256/cd/10/cd105306159e63d29e7998882ec439a8c6d0f482b1a5cd9053aedc0d782b762f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/7F42CECE5F95C119862571080057CD3B.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4531NM

## ADs that name it (0)

None.

## Approved models (2)

- Commander Aircraft Company 112 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))
- Commander Aircraft Company 114 ([TCDS A12SO](https://openairdocs.org/tcds/A12SO))

## 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 International Motors Company 777 First Street, #510 Gilroy, California 95020-4918 Part 23 of the Federal Aviation Regulations.

A12SO

Gulfstream Aerospace

112, 114 Description of Type Design Change: Replace original 100 watt landing light with a 250 watt lamp in accordance with FAA sealed International Motors Company Installation Drawing No. 20400, Revision B, dated April 12, 1989, or later FAA Approved revision.

Limitations and Conditions: The approval of this change in type design applies basically to the listed models only. This approval should not be extended to other aircraft of these models 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 previously approved modifications will introduce no adverse effect upon the airworthiness or that aircraft. If the holder 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.

This certificate and the supporting data, which is the basis for approval, shall remain in effect until surrendered, suspended, revoked or a termination date is otherwise established by the Administrator of the Federal Aviation Administration.

Date of application: July 15, 1988

Date of issuance: May 30, 1989

Date reissued: January 25, 2006

( Signature)

Manager, Technical & Administrative Support Staff, Los Angeles Aircraft Certification Office ( Title)

## Every issue (1)

- January 25, 2006: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/cd/10/cd105306159e63d29e7998882ec439a8c6d0f482b1a5cd9053aedc0d782b762f)

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