Table 21. Master Failure Symptom Index (cont)

Table 21. Master Failure Symptom Index (cont) - TM-1-1520-238-T-2_109

Table 21. Master Failure Symptom Index (cont) - TM-1-1520-238-T-2_111

TM-1-1520-238-T-2 Army Model AH-64 Helicopter (NSN
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TM 1–1520–238–T–2 2–64 Table 2–1. Master Failure Symptom Index (cont) Failure Symptom MOC Reference EMERGENCY HYDRAULIC FLIGHT CONTROLS DO NOT OPERATE PROPERLY (PILOT CENTER CIRCUIT BREAKER PANEL: EMERG HYD CIRCUIT BREAKER OPEN) TM 1–1520–238–T–5 UTILITY HYDRAULIC SYSTEM EMERGENCY HYDRAULIC PRESSURE INDICATOR DOES NOT INDICATE 3000 PSI (PILOT INSTRUMENT PANEL: EMERG HYD SWITCH SET TO EMERG HYD) TM 1–1520–238–T–5 UTILITY HYDRAULIC SYSTEM EMERGENCY HYDRAULIC PRESSURE INDICATOR EDGE–LIGHT IS NOT LIGHTED (PILOT EXT LT/INTR LT PANEL: INST CONTROL ROTATED TO BRT) TM 1–1520–238–T–5 UTILITY HYDRAULIC SYSTEM EMERG HYD CIRCUIT BREAKER (CB35) DOES NOT STAY CLOSED (PILOT ELEC PWR PANEL: BATT/EXT PWR SWITCH SET TO EXT PWR) TM 1–1520–238–T–6 CIRCUIT PROTECTION SYSTEM (DC EMERGENCY BUS – PILOT STATION) EMERG HYD CIRCUIT BREAKER (CB35) DOES NOT STAY CLOSED (PILOT INSTRUMENT PANEL: EMERG HYD SWITCH SET TO EMERG HYD) TM 1–1520–238–T–5 UTILITY HYDRAULIC SYSTEM EMERG HYD SWITCH EDGE–LIGHT IS NOT LIGHTED (PILOT EXT LT/INTR LT PANEL: INST CONTROL ROTATED TO BRT) TM 1–1520–238–T–5 UTILITY HYDRAULIC SYSTEM EMERG PWR INDICATOR IS NOT LIGHTED (PILOT MASTER CAUTION/WARNING PANEL: PRESS TO TEST INDICATOR PRESSED) TM 1–1520–238–T–6 PILOT CAUTION AND WARNING SYSTEM EMERG PWR INDICATOR IS NOT LIGHTED WITH CKT B SWITCH CLOSED (EMERG PWR CHK OVSP TEST PANEL: CKT B SWITCH SET TO ENG 1) TM 1–1520–238–T–4 POWER PLANTS (ENGINE 1) EMERG PWR INDICATOR IS NOT LIGHTED WITH CKT B SWITCH CLOSED (EMERG PWR CHK OVSP TEST PANEL: CKT B SWITCH SET TO ENG 2) TM 1–1520–238–T–4 POWER PLANTS (ENGINE 2)

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