TM 1–1520–238–T–2 2–84 Change 4 Table 2–1. Master Failure Symptom Index (cont) Failure Symptom MOC Reference FUEL FLOWS FROM ENGINE 1 NACELLE OVERBOARD DRAIN (PILOT FUEL PANEL: CROSSFEED SWITCH SET TO NORM) TM 1–1520–238–T–7 FUEL CROSSFEED/ BOOST SYSTEM FUEL FLOWS FROM ENGINE 2 NACELLE OVERBOARD DRAIN (CPG FUEL PANEL: TK SEL SWITCH SET TO NORM) TM 1–1520–238–T–7 FUEL CROSSFEED/ BOOST SYSTEM FUEL IS CONTAMINATED (AFT FUEL CELL SAMPLE) TM 1–1520–238–T–7 HELICOPTER FUEL SYSTEM VISUAL CHECK FUEL IS CONTAMINATED (FORWARD FUEL CELL SAMPLE) TM 1–1520–238–T–7 HELICOPTER FUEL SYSTEM VISUAL CHECK FUEL LEAKAGE IS PRESENT (PILOT APU FIRE TEST PANEL: START/RUN/OFF SWITCH SET TO RUN) TM 1–1520–238–T–8 AUXILIARY POWER UNIT FUEL LEAKS ARE PRESENT TM 1–1520–238–T–7 HELICOPTER FUEL SYSTEM VISUAL CHECK FUEL LEAKS FROM FUEL CELL (FUEL LOADING) TM 1–1520–238–T–7 GRAVITY REFUELING/ DEFUELING FUEL LOW AFT INDICATORS – ARE NOT LIGHTED TM 1–1520–238–T–7 FUEL QUANTITY INDICATION/ TRANSFER FUEL LOW AFT INDICATORS – ARE NOT LIGHTED WITH PILOT FUEL QUANTITY INDICATOR AFT VERTICAL DISPLAY INDICATING BETWEEN 22 AND 26 TM 1–1520–238–T–7 FUEL QUANTITY INDICATION/ TRANSFER FUEL LOW FWD INDICATORS – ARE NOT LIGHTED WITH PILOT FUEL QUANTITY INDICATOR FWD VERTICAL DISPLAY INDICATING BETWEEN 20 AND 16 TM 1–1520–238–T–7 FUEL QUANTITY INDICATION/ TRANSFER FUEL NOZZLE DOES NOT LOCK ONTO ADAPTER TM 1–1520–238–T–7 PRESSURE REFUELING/ DEFUELING FUEL OR OIL LEAKAGE IS PRESENT (APU OPERATING) TM 1–1520–238–T–8 AUXILIARY POWER UNIT FUEL PSI ENG 1 INDICATOR IS LIGHTED (ENGINE 1 OPERATING) TM 1–1520–238–T–4 POWER PLANTS (ENGINE 1) FUEL PSI ENG 1 INDICATOR IS NOT LIGHTED (PILOT MASTER CAUTION/ WARNING PANEL: PRESS TO TEST INDICATOR PRESSED) TM 1–1520–238–T–4 POWER PLANTS (ENGINE 1) FUEL PSI ENG 2 INDICATOR IS LIGHTED (ENGINE 2 OPERATING) TM 1–1520–238–T–4 POWER PLANTS (ENGINE 2)