Engineering Technical Letters (AFETL) 
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The ETL Index is available in the following format: Adobe Acrobat (PDF)
All ETL's have been cancelled or superseded by other publications. For a comprehensive list of all former ETLs—including each ETL's number, title, date of publication, and status—consult the ETL Index below.
| Title |
Date |
View |
|---|---|---|
| Engineer Technical Letters (ETL) Index | 05-10-2021 |
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