# STC SA4541NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: WECO Inc, United States
- Description: ONE-ONLY: Installation of cabin humidifier, serial number 1040.
- Applied: August 19, 1988
- Status date: February 16, 2007
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21, Part 25
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- Certificate PDF: https://openairdocs.org/files/sha256/ac/bb/acbb51824418017a605eccb806f3ac0446c8bec952515a8f46e0e6e3a072a766
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C88E61573B5FB1C78625728A0054C207.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA4541NM

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-IV ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

## 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.

1501 Aviation Boulevard Lincoln, California 95658 Part 25 of the Federal Aviation Regulations.

A12EA

Gulfstream Aerospace Corporation

G-IV, S/N 1040 only Description of Type Design Change : Installation of cabin humidifier in accordance with The Jet Center Drawing List Humidifier Installation G-IV, S/N 1040, NC, or later FAA Approved revisions.

Limitations and Conditions : Data pertaining to this modificati on are considered inadequate for duplication in other aircraft. This approval is limite d to the installation made in Gulfstream Aerospace Corporation Model G-IV, Serial No. 1040 only.

Date of application : August 19, 1988

Date of issuance : March 23, 1989

Date reissued : February 4, 2005, February 16, 2007

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

## Every issue (1)

- February 16, 2007: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ac/bb/acbb51824418017a605eccb806f3ac0446c8bec952515a8f46e0e6e3a072a766)

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