# STC SA392AL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Wick Air Inc., United States
- Description: Installation of McCauley1A175 GM8242, 8244, or 8246 propeller.
- Applied: August 7, 1970
- Status date: July 11, 2008
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A2](https://openairdocs.org/tcds/1A2)
- Certificate PDF: https://openairdocs.org/files/sha256/0e/4f/0e4f32a2f5ac883fcffc4b249c39578d26fe0b2b6c69c2f9d0fc7c718df7d6e3
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/C17AE5581DE24D008625748E00698F70.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA392AL

## ADs that name it (0)

None.

## Approved models (2)

- The New Piper Aircraft Inc. PA-18AS-\"150\" ([TCDS 1A2](https://openairdocs.org/tcds/1A2))
- The New Piper Aircraft Inc. PA-18S-\"150\" ([TCDS 1A2](https://openairdocs.org/tcds/1A2))

## 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.

Part 3 of the Civil Air Regulations.

Description of Type Design Change: Installation of McCauley 1A175 GM8242, GM8244, or GM8246 propeller per Page 1 of Wick Air Inc., Installation Instructions dated 7 August 1970, or later FAA approved revision.

Limitations and Conditions: The approval of this change in type design applies to the basic Piper PA-18S-150 and Piper PA-18AS-150 aircraft only. The aircraft must be equipped with EDO Model 89-2000 floats and water rudder per airplance specification No. 1A2, item 209(b). Compatibility of this design change with previously FAA approved modifications must be determined by the installer.

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.

Wick Air Inc.

8091 E. Palmer/Wasilla Hwy Palmer, Alaska 99645 1A2 Make: Piper Model: PA-18S-150 & PA-18AS-150 Date of application: August 7, 1970

Date of issuance: August 7, 1970

Date reissued: December 8, 1986; July 11, 2008

Date amended: September 24, 1970;

July 11, 2008

( Signature) Gregory J. Holt Manager, Aircraft Certification Office Anchorage, Alaska

( Title)

## Every issue (1)

- July 11, 2008: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/0e/4f/0e4f32a2f5ac883fcffc4b249c39578d26fe0b2b6c69c2f9d0fc7c718df7d6e3)

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