11.   Pilots radio their positions to air traffic officials, but it is only when they come into radar range that controllers know precisely where they are.

12.   The investigators also note that the pilots never radioed a distress call.

13.   The pilot radioed for assistance minutes before the crash.

14.   The official Antara news agency said the pilot had radioed ahead for landing instructions minutes before the crash and had said the haze was causing poor visibility.

15.   The plane crashed into the Atlantic a few minutes after the pilots radioed that they had smoke in the cockpit.

16.   Then, if someone is becoming unruly in the air, the pilot can radio the airline to see if passengers on the flight might be of assistance.

17.   Antara reported that radar contact was lost eight minutes after the pilot had radioed for guidance for his final approach.

18.   Army pilots radioed for boats to ferry victims to makeshift camps on higher ground.

19.   Australian Broadcasting Corp. said weather problems forced the flight to return, and then the pilot radioed that he was having mechanical problems.

20.   But when the pilot of a second fighter radioed that the fire was out, Webb decided to turn back toward the base and land without power.