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United States Department of TransportationUnited States Department of Transportation

AC 20-138D - Airworthiness Approval of Positioning and Navigation Systems (Including Change 2)

Document Information

Number
20-138D
Title
Airworthiness Approval of Positioning and Navigation Systems (Including Change 2)
Status
Active
Date issued
2014-03-28
Office of Primary Responsibility
AIR-130, Aviation Safety - Aircraft Certification Service, Aircraft Engineering Division
Description

This revision adds minor clarifications and new guidance material based on issues and questions since revision ‘C’ was published. There are several new changes such as: equipment capability versus installed limitations; clarifying database configuration versus equipment capability; adding step-down fixes to navigation databases; a new appendix for demonstrating radius to fix (RF) leg capability; and, including required navigation performance (RNP) prediction guidance for RNP authorization required approach (RNP AR APCH).

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