5-2.3.1 ROTOR BLADE TRACKING AND BALANCING SYSTEM OPERATIONAL CHECK

5-2.3 ROTOR BLADE TRACKING AND BALANCING SYSTEM OPERATIONAL CHECK

5-2.4 BLADE TRACK CIRCUIT BREAKER WILL NOT STAY CLOSED

TM-55-1520-240-T-1 CH-47D Heilcopter Manual
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TM 55-1520-240-T 5-2.3.1 ROTOR BLADE TRACKING AND BALANCING SYSTEM OPERATIONAL CHECK 5-2.3.1 INITIAL SETUP Applicable Configurations: Tracking with Helitune Tools: None Materials: None Personnel Required: Rotary Wing Aviator (2) Aircraft Electrician References: TM 55-1520-240-23 Equipment Condition: TM 55-1520-240-23: Battery Connected Electrical Power On Hydraulic Power On Rotor Blade Tracking and Balancing System Visual Check Performed (Task 5-2.2). Helicopter Prepared for In-Flight Blade Balancing TASK RESULT 1. Check that BLADE TRACK circuit breaker (1) is If Blade Track circuit breaker (1) is open, close it. If closed. it opens again, go to task 5-2.4. 2. Have pilot start engines and stabilize rotors at 100 percent rpm. Prepare Helitune unit for Ground Track, reference TM 55-1520-240-23. 3. Release EMERGENCY ISOLATION switch (2) Power status lights (4) on operators console shall on DMU. Press ON key (3) on operators con- be green. If not, go to task 5-2.9. sole. 4. Perform ground track procedure, reference TM55- 1520-240-23 FOLLOW-ON MAINTENANCE: TM 55-1520-240-23: Battery Disconnected Electrical Power Off Hydraulic Power Off Disconnect Helitune Equipment Change 10 END OF TASK 5-8.1/(5-8.2 blank)

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