# STC SA1246GL

- Type: Supplemental type certificate
- Status: Current, Amended
- Holder: Northwest Airlines Inc., United States
- Description: Install a 'tail cone missing' visual advisory system.
- Applied: October 7, 1987
- Status date: February 12, 1990
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS A6WE](https://openairdocs.org/tcds/A6WE)
- Certificate PDF: https://openairdocs.org/files/sha256/af/63/af63763991905d282978855b43baf852b18d880a71669f21e179c5ca7381c0f9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118530353220260729143436.0001
- DRS record last changed: July 29, 2026
- Page: https://openairdocs.org/stc/SA1246GL

## ADs that name it (0)

None.

## Approved models (16)

- McDonnell Douglas Corporation DC-9-11 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-12 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-13 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-14 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-15 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-15F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- 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))
- McDonnell Douglas Corporation DC-9-32F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-33F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-34 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-34F ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-51 ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-81 (MD-81) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-82 (MD-82) ([TCDS A6WE](https://openairdocs.org/tcds/A6WE))
- McDonnell Douglas Corporation DC-9-83 (MD-83) ([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 (2)

- February 12, 1990: Amended, Current. [certificate](https://openairdocs.org/files/sha256/af/63/af63763991905d282978855b43baf852b18d880a71669f21e179c5ca7381c0f9)
- October 21, 1987: Issued, Historical. [certificate](https://openairdocs.org/files/sha256/e6/99/e6995ff5faffe432f418b86e4c071e5c09ea861b516f2c48af366edd2d9e3df9)

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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.