TM 1–1520–238–T–2
2–58
Table 2–1.
Master Failure Symptom Index (cont)
Failure Symptom
MOC
Reference
ECS AFT FAN CIRCUIT BREAKER (CB75) DOES
NOT STAY CLOSED
TM 1–1520–238–T–8
ENVIRONMENTAL
CONTROL SYSTEM
ECS AFT FAN CIRCUIT BREAKER (CB75) 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 (AC
ESSENTIAL BUS 2 –
PILOT STATION)
ECS AIRFLOW HAS NO TEMPERATURE
CHANGE (PILOT ECS PANEL: TEMP
CONTROL SET TO COLD OR WARM)
TM 1–1520–238–T–8
ENVIRONMENTAL
CONTROL SYSTEM
ECS AIRFLOW IS LOW OR NOT PRESENT
(PILOT ECS PANEL: ENCU SWITCH SET TO
ON)
TM 1–1520–238–T–8
ENVIRONMENTAL
CONTROL SYSTEM
ECS AIRFLOW IS NOT REDUCED (ENGINE 1
OPERATING) (PILOT CENTER CIRCUIT
BREAKER PANEL: FUEL BST CIRCUIT
BREAKER OPENED)
TM 1–1520–238–T–5
PRESSURIZED AIR
SYSTEM
ECS BLADE DE–ICE CIRCUIT BREAKER (CB85)
DOES NOT STAY CLOSED (APU OPERATING)
TM 1–1520–238–T–8
ROTOR BLADES
DE–ICE
ECS BLADE DE–ICE CIRCUIT BREAKER (CB85)
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
ESSENTIAL BUS 3 –
PILOT STATION)
ECS BLADE DE–ICE CONTR CIRCUIT
BREAKER (CB83) DOES NOT STAY CLOSED
(APU OPERATING)
TM 1–1520–238–T–8
ROTOR BLADES
DE–ICE
ECS BLADE DE–ICE CONTR CIRCUIT
BREAKER (CB83) DOES NOT STAY CLOSED
(PILOT ANTI ICE PANEL: ENG INLET ON/OFF
SWITCH SET TO ON)
TM 1–1520–238–T–8
ROTOR BLADES
DE–ICE
ECS BLADE DE–ICE CONTR CIRCUIT
BREAKER (CB83) DOES NOT STAY CLOSED
(PILOT ANTI ICE PANEL: ON/OFF/TEST
SWITCH SET TO TEST)
TM 1–1520–238–T–8
ROTOR BLADES
DE–ICE
