1.   Foreign officers could not operate radar and other navigational equipment.

2.   Also, the planes are fitted with American radios and navigational equipment.

3.   Airline officials explain that cell use can interfere with navigational equipment.

4.   Airline officials explain that cellphone use can interfere with navigational equipment.

5.   Engineers have done such a good job of designing flight computers, navigational equipment and autopilots that flying is by far the safest form of travel.

6.   Even as the Florida Straits remained one of the busiest of shipping lanes, navigational equipment and maps improved.

7.   For example, one possible way to avoid interference with the navigational equipment would be to move it.

8.   He doubted that the ship had sufficient diesel fuel to operate its navigational equipment or even enough water to keep the engines cool.

9.   Hill said the passengers seemed relieved to be taken from the rickety wooden boat, which had suffered an electrical failure and was without navigational equipment.

10.   It turned out to be malfunctioning navigational equipment, but Mrs. Allen did not know that.