Changes to ICAO Document 4444 – Procedures for Air Navigation Services-Air Traffic Management – will usher in new in-flight contingency procedures in oceanic airspace. The changes, which are significant, will take effect Nov. 5.
NBAA is hosting a webinar Oct. 29, when Mitch Launius and other members of NBAA’s International Operations Committee will explain the changes in-depth. Register for the free webinar.
The most significant change is the offset of the contingency procedure’s lateral track, said Launius. Starting Nov. 5, it will be 5 nautical miles, rather than 15. And to prevent overshooting this position, flights will divert from their prescribed route by 30-degree intercept angle to the right. Changing lateral separation standards to increase oceanic route capacity led to the new contingency procedures, said Launius, and the 5 nm offset preserves lateral separation safety with other oceanic tracks or routes and their respective Strategic Lateral Offset Procedure buffers.