What it approves
Wing Spar Cap manufacturing process change
What the certificate says
From the PDF’s text layer, without the form’s printed wording. Layout and order may differ; the PDF is the record.
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number This certificate issued to:
SA12204WI Air Tractor, Inc.
1524 Leland Snow Way Olney, TX 76374 Part 23 14 CFR *Multiple - AML STC *Multiple - AML STC
1. The installer must determine whether this design change is compatible with previously approved modifications.
2. This STC is applicable to all serial numbers for models listed on AML.
8/23/2024 02/27/2026 02/12/2026 for Mr. Paul Nguyen Manager, Central Certification Branch Compliance & Airworthiness Division Aircraft Certification Service 3 Wing Spar Cap manufacturing process change.
Data required: See FAA STC Approved Model List (AML) SA12204WI for all approved makes, models and applicable airworthiness standards.
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number
Date o transfer:
SA12204WI 3
United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number SA12204WI 02/27/2026 Certification Basis (continued from page 1):
In accordance with 14 CFR 21.101 and 21.115, and the procedures specified in FAA Order 8110-48 and FAA AC
21.101, the certification basis for this modification is as follows:
1. The type certification basis for areas not changed or not affected by this modification remain as specified in the applicable TCDS.
2. The certification basis for areas changed or affected by this modification since the date of application, 8/23/2024, was determined to be:
For Certification Group 1: For Certification Group 2:
Section Amdt. Section Amdt.
23.1 initial 23.1 23-34
23.305 initial 23.305 initial
23.307 initial 23.307 initial
23.572(a)(1) 23-7 23.572(a)(1)(b)(1) 23-38
23.601 initial 23.601 initial
23.603 initial 23.603 23-23
23.605 initial 23.605(a)(b) 23-23
23.627 initial 23.627 initial
23.1529 23-8 23.1529 23-26 --- END --- 3 3
ADs that name this STC · 0
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Approved models · 18
Every issue · 2
DRS keeps each issue of an STC as its own record, with its own certificate and attachments.
| Date | Status | Files |
|---|---|---|
| February 27, 2026 | Reissued, current | CertificateApproved model list |
| February 12, 2026 | Issued, earlier issue | CertificateApproved model list |