UH-60 Electrical System By: CW3 Tommy W. Hanks

OBJECTIVE: To develop the student instructor pilot’s (IP) understanding of the UH-60 Electrical System.

REFERENCES: TM 1-1520-237-10 UH-60 Electrical System Student Handout

OUTLINE: Overview of electrical components and their locations. Review & Questions Conclusion

COMPONENTS AND LOCATIONS: Generators Generator Control Units (GCU) AC Primary Bus AC to DC Converter DC Primary Bus AC Essential Bus DC Essential Bus

COMPONENTS AND LOCATIONS (con’t): Battery Bus Battery Utility Bus Charger Analyzer External Power Monitor Panel Battery Current Limiters

ELECTRICAL SYSTEM EPs: Lightning Strike Generator Failure Battery Fault Battery Low Charge Generator Bearing Caution Light Electrical Fire in Flight

ELECTRICAL SYSTEM LIMITS: APU Generator Operating Limits

REVIEW & QUESTIONS: CONCLUSION! CW3 JOHNNY CURREN IS MY HERO!

UH-60 FIRE DETECTION SYSTEM BY: CW3 Tommy W. Hanks

OBJECTIVE: Develop the student IPs understanding of both the UH-60 Fire Detection and Fire Extinguishing Systems.

REFRENCES: TM 1-1520-237-10 UH-60 Fire Detection Student Handout

OUTLINE: Overview of components and their locations Review and Questions Conclusion

COMPONENTS AND LOCATIONS: Fire Extinguisher Bottles Directional Control Valve Photo-conductive Cells Extinguishing Discharge Ports 10G Impact Switch Thermal Relief Port

FIRE DETECTION SYSTEM EPs: Fire in Flight Fire on the Ground APU Compartment Fire

ASSOCIATED LIMITATIONS: !!! CAUTION !!! In case of fire when AC electrical power is not applied to the helicopter, the reserve fire extinguisher must be discharged. Fire extinguisher agent cannot be discharged into the #2 engine compartment if AC electrical power is not applied to the helicopter.

BONUS: NAME THE EXTINGUISHING AGENT USED! REVIEW AND QUESTIONS: CONCLUSION BONUS: NAME THE EXTINGUISHING AGENT USED!