TM 1–1520–238–T–2 2–18 Table 2–1. Master Failure Symptom Index (cont) Failure Symptom MOC Reference AUDIO IS NOT PRESENT IN ALL THREE HEADSETS (LEFT WING MIC PTT SWITCH PRESSED) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN ALL THREE HEADSETS (RIGHT WING MIC PTT SWITCH PRESSED) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN CPG HEADSET (CPG CSC PANEL: ICS SELECT SWITCH SET TO HOT MIC) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN CPG HEADSET (PILOT CSC PANEL: ICS SELECT SWITCH SET TO HOT MIC) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN CPG IHU EARPHONES (PILOT CYCLIC STICK: RADIO/ICS SWITCH PRESSED) TM 9–1270–221–23 IHADSS AUDIO IS NOT PRESENT IN EITHER HEADSET (CPG CSC PANEL: ICS SELECT SWITCH SET TO HOT MIC) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN EITHER HEADSET (CPG CYCLIC STICK: RADIO/ICS SWITCH SET TO ICS) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN EITHER HEADSET (CPG CYCLIC STICK: RADIO/ICS SWITCH SET TO RADIO) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN EITHER HEADSET (CPG ICS RIGHT TRANSMIT FOOT SWITCH PRESSED) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN EITHER HEADSET (CPG RADIO LEFT TRANSMIT FOOT SWITCH PRESSED) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN EITHER HEADSET (PILOT CSC PANEL: ICS SELECT SWITCH SET TO HOT MIC) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS) AUDIO IS NOT PRESENT IN EITHER HEADSET (PILOT CYCLIC STICK: RADIO/ICS SWITCH SET TO ICS) TM 11–1520–238–23–2 INTER– COMMUNICATION SYSTEM (ICS)