# STC ST12509WI

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Duncan Aviation, Inc., United States
- Description: Change to Layout of Passenger Accommodations
- Applied: July 22, 2026
- Status date: October 10, 2026
- Product: Aircraft, Large Airplane
- Certification basis: Part 25
- Data sheets: [TCDS T00003NY](https://openairdocs.org/tcds/T00003NY)
- Certificate PDF: https://openairdocs.org/files/sha256/9c/94/9c94a752ea66df240b2fb69da8db4806867df4062b9d2c2c908a5c6244ab0f8c
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174501329220261021160317.0001
- DRS record last changed: October 21, 2026
- Page: https://openairdocs.org/stc/ST12509WI

## ADs that name it (0)

None.

## Approved models (1)

- Bombardier Inc. BD-700-1A10 ([TCDS T00003NY](https://openairdocs.org/tcds/T00003NY))

## What the certificate says

The certificate is a scan without a text layer; open the PDF to read it.

## Every issue (1)

- October 10, 2026: Issued, Current. [certificate](https://openairdocs.org/files/sha256/9c/94/9c94a752ea66df240b2fb69da8db4806867df4062b9d2c2c908a5c6244ab0f8c)

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