Matching Pairs ANNUNCIATOR PANEL Online version Panel Annunciator Test by Carlos Andrés Cortés 1 L CHIP DETECT 2 L PITOT HEAT 3 FUEL CROSSFEED 4 BAT TIE OPEN 5 EXT PWR 6 L FUEL PRESS 7 L ENG FIRE 8 R NO FUEL XFR 9 L DC GEN 10 CABIN ALT HI crossfeed valve is open Left generator off the line Left pitot heat inoperative or switch is In the off position Right wing tank empty or transfer pump failure Low fuel pressure on left side Cabin pressure altitudeexceeds 12,500ft External power conector is plugged in Fire in the left engine compartment Battery isolated from generator buses Metal contamination in the left engine Oil is detect