# STC ST00318WI-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Duncan Aviation Inc, United States
- Description: Installation of an Allied Signal Sundstrand Mark VII Ground Proximity Warning System (GPWS).
- Applied: April 25, 1995
- Status date: October 27, 2009
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE)
- Certificate PDF: https://openairdocs.org/files/sha256/29/60/2960afcc21b788cec9ca5d1a28de5bf60375408934f06941567a5bd279daf3fd
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/018A137B64FE640D8625773B0067F367.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00318WI-D

## ADs that name it (0)

None.

## Approved models (1)

- Learjet Inc. 31A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE))

## What the certificate says

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

United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST00318W1-D This certificate issued to: Duncan Aviation Inc.

3701 Aviation Road Lincoln, NE 68524 Purt 25 of the Federa) Aviation Begulations.

Original Product --Type Certificute Number: AJ0CE Make: Learjet Mordol 31A Description of Type Design Change: Installation of an Allied Signal Sundstrand Mark VII Ground Proximity Warning System (GPWS). Data Required: (1) Document List No. 10045300, Revision B, dated May 24, 1995, (2) FAA Approved Flight Manual Supplement dated May 25,1995, or later FAA Approved Revisions to (1), (2).

Livitalions and Sendiliond: This approval should not be extended to other specific airplanes of this model 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 of that airplane.

suspended, revsked or a terrination date is etherwise established by the Advinistrator of the Federal Aberation Administration.

Date of Application: April 24, 1995 Date Reissued: October 27,2009 Vate r/ suance: May 25, 1995 Date Amended:

FEDERAL - ANIA TON A Who todministrato (Signature) P. Mike Chick Jr.

TOMINSTRATO DAS Administrator, DAS-501013-CE Duncan Aviation, Lincoln, Nebraska (Title)

FAR FORM 8110-2-1 (10-69) PAGE I Of 2 PAGES

## Every issue (1)

- October 27, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/29/60/2960afcc21b788cec9ca5d1a28de5bf60375408934f06941567a5bd279daf3fd)

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