# STC SA518AL

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Alaska International Air Inc., United States
- Description: Conversion of left and right auxiliary wing fuel tanks from aircraft fuel to cargo fuel
- Applied: February 14, 1974
- Status date: May 13, 1974
- Product: Aircraft, Large Airplane
- Data sheets: [TCDS A1SO](https://openairdocs.org/tcds/A1SO)
- Certificate PDF: https://openairdocs.org/files/sha256/38/a4/38a491a433c59ede3514cce52a0965b2e1f949601ab1e296393a06710a8ddc7f
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140527912520260515144321.0001
- DRS record last changed: May 15, 2026
- Page: https://openairdocs.org/stc/SA518AL

## ADs that name it (0)

None.

## Approved models (1)

- Lockheed Martin Corporation 382B ([TCDS A1SO](https://openairdocs.org/tcds/A1SO))

## What the certificate says

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

## Every issue (1)

- May 13, 1974: Issued, Current. [certificate](https://openairdocs.org/files/sha256/38/a4/38a491a433c59ede3514cce52a0965b2e1f949601ab1e296393a06710a8ddc7f)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.