AC 91-70B

Change 1Historical

Advisory circular · Oceanic and Remote Continental Airspace Operations

A newer version is currentThis is a historical version. AC 91-70D CHG 1 is the version in force, approved October 19, 2026.
Show pages 97–108
Page 109Open in PDF

Appendix G APPENDIX G. SUGGESTED SUBJECTS FOR INCLUSION IN OCEANIC AND

INTERNATIONAL PROCEDURES AND/OR AN OPERATIONS MANUAL Note 1: This list is for reference only. It is not intended to be all inclusive. You are encouraged to use this sample when creating procedures and/or operations manuals and keeping them current. Your complexity of operations and operational approvals will dictate which items on this list are applicable or need to be expanded. Please see the North Atlantic (NAT) Resource Guide for United States Operators, Pacific Resource Guide for U.S. Operators, or West Atlantic Route System, Gulf of Mexico, Caribbean Resource Guide for U.S. Operators for the most current version of this list.

Note 2: You should establish and maintain a robust process to remain current in Oceanic and International Operations. This continuous analysis or process is one component of an operator’s Safety Management System (SMS).

G.1 Regulations, International Civil Aviation Organization (ICAO) Guidance, and References.

G.1.1 Title 14 of the Federal Code of Regulations (14 CFR).

G.1.2 Applicable ICAO Documents (current editions). Find the following documents at the ICAO store at https://store.icao.int.

1. ICAO Document 4444, Procedures for Air Navigation Services—Air Traffic Management.

2. ICAO Document 7030, Regional Supplementary Procedures.

3. ICAO Document 9574, Manual on a 300 m (1000 ft) Vertical Separation Minimum Between FL 290 and FL 410 Inclusive.

4. ICAO Document 9613, Performance-based Navigation (PBN) Manual.

5. ICAO Document 10037, Global Operational Data Link (GOLD) Manual (CPDLC, ADS-C).

6. ICAO Annex 2, Rules of the Air.

7. ICAO Annex 6, Operation of Aircraft (Parts I, II, and III, as applicable).

8. ICAO NAT Document 007, North Atlantic Operations and Airspace Manual.

G.1.3 Aeronautical Information Publication (AIP), United States of America—Relevant Material.

G.1.4 Applicable FAA Advisory Circulars (AC) (current editions):

1. AC 90-96, Approval of U.S. Operators and Aircraft to Operate Under Instrument Flight Rules (IFR) In European Airspace Designated for Basic Area Navigation (B-RNAV)/RNAV 5 and Precision Area Navigation (P-RNAV).

G-1

Page 110Open in PDF

Appendix G

2. AC 90-105, Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System and in Oceanic and Remote Continental Airspace.

3. AC 91-70, Oceanic and Remote Continental Airspace Operations.

4. AC 91-85, Authorization of Aircraft and Operators for Flight in Reduced Vertical Separation Minimum (RVSM) Airspace.

5. AC 120-42, Extended Operations (ETOPS and Polar Operations).

6. AC 135-42, Extended Operations (ETOPS) and Operations in the North Polar Area.

G.1.5 Miscellaneous.

1. FAA North Atlantic (NAT) Resource Guide for United States Operators, Pacific Resource Guide for U.S. Operators, or West Atlantic Route System, Gulf of Mexico, Caribbean Resource Guide for U.S. Operators, Required Navigation Performance (RNP) PDF, ICAO Paris, and Eurocontrol (SKYbrary).

2. State Department Travel Alerts and Transportation Safety Administration (TSA) Alerts.

G.1.6 Notices to Airmen (NOTAM) and Special Federal Aviation Regulations (SFAR).

G.2 Navigation. Class I versus Oceanic and Remote and dead reckoning (DR).

G.3 Flight Planning.

G.3.1 North American Routes (NAR).

G.3.2 Track Messages.

G.3.3 ICAO Flight Plans. Explanation and correct codes.

G.3.4 Computer Flight Plan (CFP).

1. Comparison to ICAO flight plan.

2. Basic cross checks (fuel, groundspeed, winds).

3. ETP and points of safe return.

4. Fuel requirements (in particular, ICAO Annex 6) and reduced fuel (OpSpecs B043, B044, and B343).

G.3.5 Special Area of Operation (SAO) Requirements.

G.3.6 Use of Plotting/Orientation Chart and Journey Log.

G-2

Page 111Open in PDF

Appendix G G.3.7 Weather Radar (WX) Charts.

1. Terminal Aerodrome Forecast (TAF), Aviation Routine Weather Report (METAR), and significant weather (SIGWX).

2. 700 millibars (mb), 500 mb, 400 mb, 300 mb, 250 mb.

3. Approved source(s)—NWS and EWINS.

G.3.8 Driftdown—Terrain, Alternates, ETOPS.

G.3.9 World Geodetic System 84 (WGS 84) or Equivalent Compliance.

G.4 State Operating Restrictions (e.g., Cabotage).

G.5 Reduced Vertical Separation Minimum (RVSM).

1. General description.

2. Metric assignments (e.g., China versus Russia).

3. Minimum required equipment.

4. Contingencies.

5. Forecasts, tropopause, temperature deviations.

G.6 Accident/Incident.

G.6.1 Title 49 of the Code of Federal Regulations (49 CFR) Part 830 (National Transportation Safety Board (NTSB)) and Part 175 (Hazardous Materials Regulations (HMR)).

G.6.2 Contingencies.

1. Weather deviations.

2. Fifteen nautical miles (NM) offset.

3. Lost Communications/Navigations, In-Flight Broadcast Procedures (IFBP), Automated Mutual-assistance Vessel Rescue (AMVER) system, Oxygen.

4. Intercept, hijack.

G.6.3 Use of Long-Range Navigation Systems (LRNS)/Flight Management Systems (FMS).

1. Review of Airplane Flight Manual Supplements (AFMS) for capabilities/limitations.

2. Description of Global Positioning System (GPS)/Inertial.

3. Currency/software version of database.

4. Loading and cross-checks.

G-3

Page 112Open in PDF

Appendix G

5. Independent verification.

6. Contingencies/fault codes.

G.6.4 Oceanic Crossing.

1. Oceanic checklist (Appendix D).

2. Master time source.

3. Clearance-Flight Information Region (FIR) differences.

4. Navigation accuracy check.

5. RVSM checks.

6. Approaching, overhead, and post-position waypoint checks.

7. Position report—estimated time of arrival (ETA) tolerance.

8. Ten-minute post-position check.

G.6.5 Altimetry.

1. Barometric pressure for local altimeter setting (QNH), barometric pressure for standard altimeter setting (QNE), and atmospheric pressure at aerodrome elevation (QFE).

2. Transition Altitude (TA)/Transition Level (TL).

3. MB, Hectopascals.

G.6.6 Transponder Operations. Regional requirements.

G.6.7 Communications, navigation, and surveillance.

1. Airspace requirements (RNP 10/5/4/1).

2. Data link (ADS-C, CPDLC).

3. Reduced separation—trials and implementations.

G.6.8 Strategic Lateral Offset Procedure (SLOP).

G.6.9 Volcanic Ash. Source of information and crew notification.

G.6.10 Space Weather. Warnings, alerts, and advisories (see Appendix C).

G.6.11 Operational Control.

1. OpSpec A008—Operational Control.

2. OpSpec A009—Airport Aeronautical Data.

3. OpSpec/MSpec A010—Aviation Weather Information.

G-4

Page 113Open in PDF

Appendix G G.6.12 Mach Number Technique.

1. Tolerance.

2. Areas applicable.

G.6.13 Oceanic Errors.

1. Reclearance/conditional clearances.

G-5

Page 114Open in PDF

Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Technologies and Procedures Division (AFS-400) at 9-AWA-AFS400-COORD@faa.gov or the Flight Standards Directives Management Officer at 9-AWA-AFS-140-Directives@faa.gov.

Subject: AC 91-70B CHG 1, Oceanic and Remote Continental Airspace Operations Date: _____________________ Please check all appropriate line items:

An error (procedural or typographical) has been noted in paragraph ____________ on page _______.

Recommend paragraph _____________ on page __________ be changed as follows:

______________________________________________________________________ ______________________________________________________________________ In a future change to this AC, please cover the following subject:

(Briefly describe what you want added.)

______________________________________________________________________ ______________________________________________________________________ Other comments:

______________________________________________________________________ ______________________________________________________________________ I would like to discuss the above. Please contact me.

Submitted by: Date: ______________________