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 able to maintain its assigned flight level should :

Flights within NAT region shall be conducted in accordance with IFR when:

The chart is a South polar stereographic projection of the Antarctic regions. A grid, printed over it, its aligned with meridian 180°, the grid North in the direction of the geographic North (non standard grid). The grid course followed by the aircraft is Rg=280°, the position is 80°S 100°E. The true course followed at this moment is :

An air traffic units may request the aircraft to report position when flying east-west north of 70°N between 10°W and 50°W, every:

For an operation in MNPS airspace along notified special routes unless otherwise specified, an aircraft must be equipped with at least:

In the event of communication failure in an MNPS (Minimum Navigation Performance Specification) airspace, the pilot must

An aircraft leaves point P (60°N 030°W) on a true heading equal to 090° while the gyro compass, which is assumed to be operating perfecly and without an hourly rate corrector unit, indicates 000°. The aircraft arrives at point Q (62°N 010°W) on a true heading equal to 095°. On the journey from P to Q the gyro compass remains in free gyro mode. If the flight lasted 1 hour 30 minutes, the gyro heading at Q will be :

In MNPS airspace, the speed reference is the:

During a flight to Europe, planned in MNPS (Minimum Navigation Performance Specification) airspace, you expect to cross the 30°W meridian at 00H30 UTC ; you will then normally be ;

In the event of an en-route HF communication failure in an MNPS (Minimum Navigation Performance Specification) airspace, the appropriate VHF frequency for air-air communications is :

At which levels may Reduced Vertical Separation Minimum (RVSM) be used within NAT region?

An aircraft flying at flight level 370 (FL 370) on MNPS Airspace is unable to continue flight in accordance with its air traffic control clearance (degradation of navigational performance requirements, mechanics troubles .... etc), but is able to maintain its assigned level (FL 370), and due to a total loss of communications capability, could not obtain a revised clearance from ATC. The aircraft should leave its assigned route or track by turning 90° (90 degrees) to the right or left ....whenever this is possible, and the subsequent action will be, turn to acquire and maintain in either direction a track laterally separated by 30 NM from its assigned route and :

During a flight to Europe, scheduled in MNPS (Minimum Navigation Performance Spécification) airspace, you expect to cross the 30°W meridian at 2330 UTC ; you will normally be :

When leaving the MNPS oceanic control area for a domestic controlled area, the pilot has to:

A polar stereographic chart has a grid printed over it which is parallel to the meridian 054°W, with Grid North in the direction of the North geographic pole. An aircraft is following a true course of 330°. At position 80°N 140°E, its grid heading (GH) with this system will be

An aircraft operating within MNPS Airspace is unable to continue flight in accordance with its air traffic control clearance (due to degradation of navigational performance requirements), but is able to maintain its assigned level,and due to a total loss of communications capability, could not obtain a revised clearance from ATC. The aircraft should leave its assigned route or track by turning 90° (90 degrees) to the right or left whenever this is possible, and the subsequent action will be, turn to acquire and maintain in either direction a track laterally separated by 30 NM from its assigned route and climb 1 000 ft or descend 500 ft, if :

The North Atlantic airspace is regulated according to :

In the MNPS (Minimum Navigation Performance Specification) area, a pilot should first of all take the following action in the event of a failure of the last inertial navigation system:

The minimum time track is a track defined for

pilot whose aircraft does not have MNPS certification has to fly via the SHANNON-GANDER great circle. The flight must be planned to take place :

The abbreviation MNPS means :

The minimum longitudinal spacing of two aircraft flying in MNPS airspace at the same Mach number is :

If a pilot has connected the automatic pilot to the gyro compass (which is assumed to be operating correctly) and the latter is fitted with a rate correction device which is properly corrected by astronomical precession, the course followed by the aircraft (in still air conditions) is a:

The validity period of a flight track system organized in MNPS (Minimum Navigation Performance Specification) airspace during an Eastbound flight normally is :

In the Area where the MNPS is applicable, the vertical separation that can be applied between FL 290 and FL410 inclusive is :

Penetration into the North Atlantic ocean airspace is :

An air traffic unit may request the aircraft to report position when flying east-west south of 70°N between 5°W and 65°W, every:

On a polar stereographic chart whose grid is parallel with the Greenwich meridian in the direction of the true North pole, the "true" orientation of the great circle linking point 62°N 010°E to point 66°N 050°W is 305°. The grid route at the starting point of this great circle is :

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