# STC SA557AL

- Type: Supplemental type certificate
- Status: Current, Reissued
- Holder: Aircraft Innovations, LLC, United States
- Description: Installation of left hand front door.
- Applied: September 19, 1975
- Status date: September 11, 2009
- Product: Aircraft, Single-Engine
- Certification basis: Part 3, Part 21
- Data sheets: [TCDS 1A6](https://openairdocs.org/tcds/1A6)
- Certificate PDF: https://openairdocs.org/files/sha256/a0/cd/a0cd023497fcfb5bd275e4bd4f07ba65676493e17b72db877b52f12ef203edf4
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/280CA8371D009C2486257639005ED8DA.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA557AL

## ADs that name it (0)

None.

## Approved models (1)

- Piper Aircraft Inc. PA-22-150 ([TCDS 1A6](https://openairdocs.org/tcds/1A6))

## 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.

This certificate issued to Aircraft Innovations, LLC PO Box 110164 Anchorage, AK 99511

Part 3 of the Civil Air Regulations.

Original Product — Type Certificate Number: 1A6 Make: Piper Model: PA-22-150

Description of Type Design Change: Installation of left hand front door in accordance with Day & Night, Inc. Drawing No. 5051A dated September 12, 1975 or later FAA Approved Revisions.

1. The approval of this change in type design applies basically to Piper PA-22-150’s only. Compatibility of this design change with previously approved modifications must be determined by the installer. This determination should include consideration of significant changes in weight distribution, such as an increase in the fixed disposable weight in the fuselage.

2. 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.

Date of application: March 19, 1975 Date reissued : May 7, 1979; September 11, 2009

Date of issuance: June 26, 1975 Date amended: March 17, 1976; September 11, 2009

( Signature) David D. Swartz Acting Manager, Anchorage Aircraft Certification Office

( Title)

## Every issue (1)

- September 11, 2009: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/a0/cd/a0cd023497fcfb5bd275e4bd4f07ba65676493e17b72db877b52f12ef203edf4)

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