TM 1-1510-225-10 2-122 Table 2-14.  Caution / Advisory Annunciator Panel Description CAUTION / ADVISORY ANNUNCIATOR NOMENCLATURE COLOR CAUSE FOR ILLUMINATION L DC GEN Yellow Left engine generator off the line. GPWS INOP T3  F3 Yellow Ground Collision Avoidance System not functional. HYD FLUID LOW Yellow Fluid level in power pack is low. RVS NOT READY Yellow Propeller levers are not in the high RPM, low pitch position, with the landing  gear extended. R DC GEN Yellow Right engine generator off the line. L CHIP DETECT Yellow Contamination of left engine oil detected. IFF Yellow Transponder fails to reply to a valid mode 4 interrogation. DUCT OVERTEMP Yellow Excessive bleed air temperature in environmental heat ducts. R CHIP DETECT Yellow Contamination of right engine oil detected. L ENG ICE FAIL    R Yellow Left engine ice vane malfunction.  Ice vane has not attained proper position. L ICE VANE  T3  F3 Yellow Vane did not attain selected position within 15 seconds. BATTERY CHG Yellow Charge rate on battery exceeds 7 amperes. EXT PWR Yellow External power connector plugged in. R ENG ICE FAIL   R Yellow Right engine ice vane malfunction.  Ice vane has not attained proper position. R ICE VANE  T3  F3 Yellow Vane did not attain selected position within 15 seconds. L AUTOFEATHER Green Left autofeather armed. L ICE VANE EXT  T3  F3 Green Ice vane is in extended position. ELEC TRIM OFF T3  F3 Green Electric trim switch has been turned off. AIR COND N₁ LOW Green Right engine RPM too low for air conditioning load. R AUTOFEATHER Green Right autofeather armed. L ENG ANTI-ICE    R Green Left ice vane extended. L ICE VANE EXT T3  F3 Green Left ice vane is in extended position. BRAKE DEICE ON Green Brake deicing system is on. LDG / TAXI LIGHT Green Landing / taxi light is on. PASS OXY ON Green Passenger oxygen system is operating. R ENG ANTI-ICE   R Green Right ice vane extended. R ICE VANE EXT T3  F3 Green Ice vane is in extended position. L IGNITION ON Green Left engine ignition / start switch on, left engine auto-ignition switch armed and engine torque below 20%. L BL AIR OFF Green Left environmental bleed air valve closed. FUEL CROSSFEED Green Crossfeed valve open. R BL AIR OFF Green Right environmental bleed air valve closed.