1.   After encountering trouble, the pilot of the Saratoga reported her instruments were failing and officials began clearing airspace at Peachtree-DeKalb Airport, authorities said.

2.   Its navigation instruments had failed, and the fuel tanks were almost empty.

3.   Minutes after the plane left the Lima airport for Santiago, Chile, the pilot radioed that his instruments had failed.

4.   Several instruments have failed, including a star tracker that was an important navigation and orientation device.

5.   Steitz said it would be premature to say the instrument had failed.

6.   Minutes after the plane left the Lima airport, pilot Erick Schreiber radioed that his instruments had failed.

7.   Minutes after the Aeroperu plane left the Lima airport, pilot Erick Schreiber radioed that his instruments had failed.