In the event of a contingency which required an en-route diversion to an alternate aerodrome across the direction of the prevailing 'NAT' traffic flow and if prior ATC clearance cannot be obtained an aircraft not able to maintain its assigned flight level should:
Domanda 22, Operational Procedures - ATPL - Airline Transport Pilot license
| Start its climb or descent while turning to acquire an offset by 90 NM from its assigned route or track. |
| Start its climb or descent while turning to acquire an offset by 60 NM from its assigned route or track. |
| Descend below FL275. |
| Start its climb or descent while turning to acquire an offset by 30 NM from its assigned route or track. |
