# STC ST486CH

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Northwest Airlines Inc., United States
- Description: Installation of Michelin main landing gear tire 40X14/24PR/225mph, p/n029-769-0.
- Applied: February 13, 1996
- Status date: March 19, 1996
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/2e/2e/2e2e86ec46603b68e5f8a14a0fe957a38ae9d318468b6161a8b5ba44a7744597
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189524696420260910165505.0001
- DRS record last changed: September 10, 2026
- Page: https://openairdocs.org/stc/ST486CH

## ADs that name it (0)

None.

## Approved models (2)

- McDonnell Douglas Corporation DC-9-31 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-32 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))

## What the certificate says

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

## Every issue (1)

- March 19, 1996: Issued, Current. [certificate](https://openairdocs.org/files/sha256/2e/2e/2e2e86ec46603b68e5f8a14a0fe957a38ae9d318468b6161a8b5ba44a7744597)

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From OpenAirDocs.org, an independent open copy of FAA and NTSB data. Only the Federal Register edition on govinfo.gov is the official legal text of an AD.