one

Three

Two

Four

2 and 4

1 and 3

2 and 3

1 and 4

can operate as stand alone equipment without any interface with other navigation equipment.

can only operate when interfacing with the GPS equipment

can only operate when interfacing with the radionavigation equipment.

can only operate when communicating with ground installations.

position and attitude.

attitude and ground speed

attitude and heading

heading.

By setting the INS mode selector to "ALIGN" and then flying straight and level with NO airspeed variations for

By setting the INS mode selector to "ALIGN" and waiting for the required time.

By setting the INS mode selector to "GPS" and realigning the INSARS through the GPS.

It can NOT, the aircraft must be stationary on the ground for alignment to be performed.

decreasing RPM and concentrating the mass at the hub of the rotor.

decreasing RPM and concentrating the mass on the periphery of the rotor.

increasing RPM and concentrating the mass at the hub of the rotor.

increasing RPM and concentrating the mass on the periphery of the rotor.

2,3, 4 and 6.

1, 2, 5 and 6.

1, 3, 4 and 5.

1, 2, 3 and 4.

The movement of the gyro spin axis along the horizontal plane.

The wander caused by movement of the aircraft.

The movement of the gyroscopic position about the vertical axis as observed by a person standing on the

The shift in position caused by imperfections in the design of a gyroscope.

Before an aircraft goes on any flight that involves a large change of magnetic latitude.   

Whenever an aircraft carries a large freight load regardless of its content.   

After any of the aircraft radio equipment has been changed due to unserviceability.   

After an aircraft has passed through a severe electrical storm or has been struck by lightning.