# STC ST00312DE-D

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Learjet Inc., United States
- Description: Installation of a single Universal Avionics Systems Corporation UNS-1B Flight Management System.
- Applied: August 8, 1997
- Status date: June 13, 2002
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE)
- Certificate PDF: https://openairdocs.org/files/sha256/5e/e3/5ee36c357a07cb8d026c6aea38f60d0cb8a9f01cd42a9f63ecc7f357e0f6db16
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID130803824420250404143915.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/ST00312DE-D

## ADs that name it (0)

None.

## Approved models (1)

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

## 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.

Number ST00312DE-D

This Certificate issued to Learjet Inc.

One Learjet Way Wichita, Kansas 67209 Part 25* of the Federal Aviation Regulations.

A10CE Learjet 31A Description of Type Design Change:

Installation of a single Universal Avionics Systems Corporation UNS-1B Flight Management System in accordance with Learjet Inc. Master Document List BAS31010006, revision (-), dated August 27, 1997, FAA approved August 27, 1997, or later approved revision.

1. This approval should not be extended to aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that aircraft.

2. FAA approved Airplane Flight Manual Supplement, BAS31045007, revision ( - ), dated August 27, 1997 or FAA approved Airplane Flight Manual Supplement, BAS31040110, revision (-), dated March 2, 2000, or later approved revision is required.

3. A copy of this certificate and the appropriate Airplane Flight Manual Supplement must be maintained as part of the permanent records for the modified aircraft.

Date of application : August 8, 1997

Date of issuance : August 27, 1997

Date reissued : June 13, 2002; December 18, 2015

Date amended : March 2, 2000

Original signed by Melanie Boucher

(Signature) Mélanie Boucher ODA administrator ODA-501508-CE, Learjet Inc.

Wichita, Kansas ( Title)

United States Of America Department of Transportation - Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number ST00312DE-D

4. 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.

5. The appropriate Instructions for Continued Airworthiness, BAS-31010006-IFCA-5, or BAS-31010006-IFCA-6, or BAS-31010006-IFCA-7, or BAS-31010006-IFCA-8, each dated February 25, 2000, FAA accepted March 2, 2000 or later FAA accepted revision is required for this installation.

-END-

## Every issue (1)

- June 13, 2002: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/5e/e3/5ee36c357a07cb8d026c6aea38f60d0cb8a9f01cd42a9f63ecc7f357e0f6db16)

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