Stall warning horn sounds continuously

Standby fuel pump inoperative. - TM-1-1510-224-MTF_114

TM-1-1510-224-MTF Maintenance Test Flight Manual Army RC-12P Aircraft and Army RC-12Q Aircraft
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TM 1-1510-224-MTF C33. Pitot tube heater fails to operate. a. Tripped circuit breaker. b. Defective heater. c. Defective wiring. d. Defective switch. C34. Stall warning system inoperative. a. Defective stall warning transducer. b. Defective stall warning computer. c. Defective wiring. d. Defective stall/landing gear warning module. e. Defective speaker. C35. Stall warning horn sounds continuously. a. Defective stall warning transducer. b. Defective stall warning test system. c. Defective wiring. d. Defective stall warning computer. C36. Both inverters inoperative. Defective wiring in inverter system. C37. One inverter inoperative. a. Tripped inverter circuit breaker (on DC power distribution panel beneath floor). b. Loose or corroded ground connection. c. Defective wiring to inverter. d. Defective inverter switch. C38. BATTERY CHARGE annunciator light inoperative. a. Defective light bulb. b. Connections on battery shunt loose or corroded. c. Defective battery charge monitor module. 3-12

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