AC 20-109A

Historical

Advisory circular · Service Difficulty Program (General Aviation)

A newer version is currentThis is a historical version. AC 20-109B is the version in force, approved November 1, 2023.
Approved
April 8, 1993
Last reviewed
May 29, 2001
Cancels
AC20-109
Cancelled by
AC20-109B
Family
AC 20-109 · 3 versions
Revision
A
14 CFR parts
91, 125, 135

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

Show pages 1–12
Page 13OCROpen in PDF

Appendix 1 ITEM. OPERATOR DESIGNATOR: Enter four-letter designator assigned by the FAA, as appropriate.

Example: DXRA, UMNA

OPERATOR

DESIGNATOR DXRA 9

Page 16OCROpen in PDF

U.S. Department of Transportation Federal Aviation Administration Flight Standards Service P.O. Box 25082 Oklahoma City, OK 73125-5029 AFS-640 Official Business Penalty for Privato Use 5300