# STC SA1521NM

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Univair Aircraft Corp, United States
- Description: Installation of stamped aluminum wing ribs.
- Applied: August 20, 1982
- Status date: October 25, 1982
- Product: Aircraft, Single-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A-805](https://openairdocs.org/tcds/A-805)
- Certificate PDF: https://openairdocs.org/files/sha256/a7/39/a73997bfa71c2331886c4116e8bcaee401967b141255d9b102bd1da9bda65e8c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E3842B1B0A537E0985256CC10082128D.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1521NM

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-17 ([TCDS A-805](https://openairdocs.org/tcds/A-805))

## What the certificate says

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

A846ктo-05 United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: SA1521NM This certificate issued to: Univair Aircraft Corp.

Rt. 3, Box 59 Aurora, Colorado 80011 Part 3 of the CiVil Air Regulations.

Original Product - Type bertificate Numben: 805 Make: Piper Model: PA-17 Description of Type Design Change:

Installation of stamped aluminum wing ribs in accordance with Univair's Application Chart Univair Replacement Rib Cross Reference to Piper Original Rib, FAA approved October 25, 1982 or subsequent FAA approved revision.

This approval should not be extended to other aircraft 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 the aircraft.

Date of Application: AUguSt 20, 1982 Jute missued:

Date of Issuance: October 25, 1982 Jale unended:

•EDERA AVIATION By Direction of the Administrator market. Balder Mark E. Baldwin, (Signature) Manager Denver Aircraft Certification Field Office Northwest Mountain Region, Aurora, Colorado (Title)

47.

## Every issue (1)

- October 25, 1982: Issued, Current. [certificate](https://openairdocs.org/files/sha256/a7/39/a73997bfa71c2331886c4116e8bcaee401967b141255d9b102bd1da9bda65e8c)

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