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United States Department of Transportation United States Department of Transportation

Notice 8900.790 - Updated Designation of Northern Area of Magnetic Unreliability Affecting B040 Authorizations

Document Information

Type
Notice
Number
8900.790
Title
Updated Designation of Northern Area of Magnetic Unreliability Affecting B040 Authorizations
Date issued
2026-10-19
Status
Active
Office of Primary Responsibility
AFS-400
Access restriction
Public
Order purpose statement

This notice announces a revision to the Federal Aviation Administration’s (FAA) designation of the Northern Area of Magnetic Unreliability (AMU) as published in Advisory Circular (AC) 91-70, Oceanic and Remote Continental Airspace Operations, and in inspector guidance in FAA Order 8900.1, Flight Standards Information Management System. The revisions announced in this notice affect operators under Title 14 of the Code of Federal Regulations (14 CFR) parts 91 subpart K (part 91K), 121, 121/135, 125 (including part 125 Letter of Deviation Authority (LODA) holders), and 135, especially those holding or interested in holding the B040 authorization, “Operations in Areas of Magnetic Unreliability.” This notice also requires Safety Assurance offices to notify affected operators about these changes. This notice contains information that is administrative in nature.

Content

For more information, contact 9-awa-ait-directives@faa.gov.