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Document Title: AC 90-80C, Approval of Offshore Standard Instrument Operations, Airborne Radar Operations, and Helicopter En Route Descent Areas
Summary: This advisory circular (AC) provides guidance for obtaining approval for Offshore Standard Instrument Operations (OSIOs), Airborne Radar Operations (AROs), and Helicopter En Route Descent Areas (HEDAs). This advisory circular retains the ARO, Parallel offset OSIO, Delta 30° OSIO and the HEDA along with Global Positioning System (GPS) navigation for the OSIO and HEDA operations contained in AC 90-80B, and adds the OSIO (AUTO). This AC provides operational approval information for operators conducting operations under 14 CFR parts 27, 29, 43, 91, 91K, and 135 within the United States (U.S.) National Airspace System (NAS). Approvals issued to U.S. Operators may be used as a basis for authorization by other state authorities to conduct equivalent operations.
Document for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Comments Due: 04/02/2015
References: Title 14 of the Code of Federal Regulations (14 CFR):
  • Part 27, Airworthiness Standards: Normal Category Rotorcraft
  • Part 29, Airworthiness Standards: Transport Category Rotorcraft
  • Part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration
  • Part 91, General Operating and Flight Rules
  • Part 135, Operating Requirements: Commuter and On Demand Operations and Rules Governing Persons On Board Such Aircraft
AC 91-70, Oceanic and International Operations
FAA Order 8260.19, Flight Procedures and Airspace
FAA Order 8260.42, United States Standard for Helicopter Area Navigation (RNAV).
How to Comment: Deliver comments by mail or hand to:
Kristin Renaut
1625 K Street NW
Suite 300
Washington, DC 20006
Email comments to:
Email Comments

Fax comments to:
(202) 223-4615, Attn: Kristin Renaut
Document Title: AC 120-70C, Operational Authorization Process for the Use of Data Link Communication Systems
Summary: This advisory circular (AC) provides guidelines to reflect the introduction of NextGen data communications into the National Airspace System (NAS) and the Aeronautical Telecommunications Network Baseline 1 (ATN B1) (LINK 2000+) in Europe. It adds guidance for Controller Pilot Data Link Communications Departure Clearance (CPDLC-DCL), EUROCONTROL LINK 2000+, data link event reporting, the FAA authorization process, and editorial corrections. The AC describes the process for obtaining operational authorization for data link communication systems, acceptable methods for training and maintenance, and operational policies for use. It also outlines appropriate actions in the event of a data link communications event.
Document for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Comments Due: 04/16/2015
References: Title 14 of the Code of Federal Regulations (14 CFR):
  • Part 91
  • Part 91 Subpart K
  • Part 121
  • Part 125
  • Part 125 Subpart M
  • Part 135
How to Comment: Deliver comments by mail or hand to:
Julia Lutz
1625 K Street NW
Suite 300
Washington, DC 20006
Email comments to:
Email Comments

Fax comments to:
(202) 223-4615, Attn: Julia Lutz