# STC SA4392NM

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Custom Swift Modifications/Monte L. Zema, United States
- Description: Installation of a redesigned fiberglass engine cowl nose bowl cap section, NACA oil cooler inlet duct, new aluminum lower cowl center section and Hartzell spinner assembly.
- Applied: April 14, 1987
- Status date: July 17, 1995
- Product: Aircraft
- Certification basis: Part 21
- Data sheets: [TCDS A-766](https://openairdocs.org/tcds/A-766)
- Certificate PDF: https://openairdocs.org/files/sha256/ac/49/ac49f0af2c2d7bc144df6d30b4c637fc6838777529e7e5d7879deb86d438e116
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A702E51891BE48C5862579D000782408.0001
- DRS record last changed: December 5, 2025
- Page: https://openairdocs.org/stc/SA4392NM

## ADs that name it (0)

None.

## Approved models (1)

- Swift Museum Foundation Inc. GC-1B ([TCDS A-766](https://openairdocs.org/tcds/A-766))

## What the certificate says

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

Whit Stabsof Americ Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA4392NM This certificate issued to: Custom Swift Modifications/Monte L. Zema 771 Adam-Sherry Road Colville, WA 99114 Purt tu of the Eil Air Poegulations.

Original Product -Type Certificute Numbur: A-766 Abuke: Globe (Swift) Model: GC-1B Description of Type Design Change: Installation of a redesigned fiberglass engine cowl nose bowl cap section, NACA oil cooler inlet duct, new aluminum lower cowl center section and Hartzell spinner assembly (P/N A2298-2) in accordance with Scott Installation Instructions No. DJS 1000 and photos 1 through 8.

The above modification is applicable with the installation of the Lycoming IO-360-A engine and Hartzell HC-C2YK-1BF/F7666A-2 propeller as per STC NO. SA275NW.

Limitations and Conditions: . Data pertaining to this modification are considered inadequate for duplication in other aircraft. This approval is limited to the installation in globe Model GC-1B aircraft, Serial Number 1422, registration Number N3729K only. A copy of this Certificate shall be maintained as part of the permanent records for the modified aircraft.

sur rendered, suspendud, reucked, or a luminatica dute is etherwise estublished by the Administrator of the Federal Aviation Administrution.

Date of Application: April 14, 1987 Date Reissued: July 17, 1995 Date of Issuance: March 21, 1989 Lute unvended:

FEDERAL AVIATIO By divertion of the tahuinistraler Celiano cor (Signature) ROMANIST RATION Aircraft Certification Office Acting Manager, Seattle (Title)

## Every issue (1)

- July 17, 1995: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/ac/49/ac49f0af2c2d7bc144df6d30b4c637fc6838777529e7e5d7879deb86d438e116)

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