TM 1–1520–238–T–3
Change 5
4–1
CHAPTER 4
DE–ICE/ANTI–ICE SYSTEM MULTIPLEX READ CODES
FAILURE SYMPTOM INDEX
Symptom
Refer to paragraph
PNVS SHROUD NO–GO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1, 4–13
TADS WINDOW HEATER DOES NOT HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
PNVS SHROUD WINDOW HEATER DOES NOT HEAT . . . . . . . . . . . . . . . . . . . 4–2
CANOPY WINDSHIELD HEATERS DO NOT HEAT . . . . . . . . . . . . . . . . . . . . . . . 4–3
CANOPY TEMP CONTROLLER NO–GO CPG COMPARTMENT APPEARS
ON HOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
ICE DETECTOR SENSOR NO–GO ENG INLET LH SIDE (ACY) OR ICE
DETECTOR SENSOR NO–GO DOGHOUSE FAIRING (ACZ) APPEARS
ON HOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–6
ICE DETECTOR NO–GO FIREWALL LH SIDE APPEARS ON HOD . . . . . . . . 4–6
RTR BLADE PWR CONTROLLER NO–GO RH XMSN BAY (ACY) APPEARS
ON HOD OR RTR BLADE PWR CONT NO–GO RH XMSN BAY (ACZ)
APPEARS ON HOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–9
MAIN ROTOR HEATER NO–GO MAIN ROTOR APPEARS ON HOD . . . . . . . 4–10
RTR BLADE DISTR DE–ICE NO–GO MAIN ROTOR MAST APPEARS ON
HOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–11
TAIL ROTOR HEATER NO–GO TAIL ROTOR APPEARS ON HOD . . . . . . . . . 4–12
Personnel Required:
(2)
References:
TM 1–1270–476–T
TM 1–1520–238–T–8
TM 1–5855–265–T
Equipment Conditions:
Ref
Condition
TM 1–1270–476–T
Applicable
TM 1–1520–238–T–8
MAINTENANCE
TM 1–5855–265–T
OPERATIONAL CHECK in
progress
NOTE
All multiplex read code responses are read from right to
left.
Multiplex read codes must be used in conjunction with
applicable Maintenance Operational Check (MOC) in
progress.
Multiplex read codes are observed on the HOD (ADC) or
CDU (ADD).
