(c) Setthepilot'sremoteswitchto ON for one second; selectARM position.
EMERGENCY
LOCATOR
TRANSMITTER
ANTENNA
GBA
I
ELT ANTENNA ELTARM SWITCH
A327 I REMOTE
WHT/BLU-
I
AFTPRESSURE BULHEAD
EmergencyLocatorTransmitterSchematic
Figure 501
EFFECTIVITY:
040-999
Jan10/9025-60-00
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
A. Emergency(continued)
6. InadvertentActivation
CAUTION: Undernormalconditions,the pilot'sremoteswitchmust be set to ARM position.
In the eventthe ELT is inadvertently activated,set the pilot's remote switchto ON, then return it to ARM position.
that the ELTbe replaced followinginadvertentactivation.However,theproblemmaynot be in the transmitter.Checkthe following: As a routine precaution,it is recommended at the earliestchance
(a)
Properspacingof antennas to minimize antennaconductedRF.
(b)
Rigidityof the transmitter installation.
EFFECTIVITY: 040-999
Jan 10/90
25-60-00 PAGE 5
PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL
A. Accessory Compartments
The avionics shelvesareinstalled in the nose of the airplane inthe accessory compartment,and providemountingfacilitiesfor avionics andelectricalequipment.LocatedbetweenF.S.24.60andF.S. 57.00,theseshelvesare made of 2024-T3aluminum,angles,brackets,andclips.
A protective blanket, installed inthe avionics bay,reducesthe possibility ofdamageto the avionics
equipmentcausedbywaterleakage. The blanketis installed usingsixinch segments of trim strip.
InverterMonitor Assembly
VIEW
LOOKING
AFT
VHFComm#1 -
VHF Comm #2
Radio Altimeter -
Transmitter
Radio Altimeter -
Receiver
Transponder #2 PRESSUREBULKHEADSTA. 57.0
Avionics Bay Feed Through Identificiations Figure401
EFFECTIVITY:
040-999
25-70-00PAGE 1
Jan 10/90
PIPERAIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL
A. AccessoryCompartments(continued)
-VIEWB
VIEW C -
Pitch
Servo
TOP VIEW LOOKINGDOWN
VIEW VIEWD
VIEW
VIEW C VIEW E Trim Servo _ Pitch Servo Yaw Servo CockpitVoice Recorder
LEFT,SIDEVIEW
Electricaland Electronic Equipment Locations Figure 402 (Sheet 1 of 4)
25-70-00Jan 10/90 25-70-00 EFFECTIVITY: 040-999
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
A. AccessoryCompartments(continued)
VIEW A Left Stall Computer Right Stall Computer Autofeather Computer Lighting Inverter Assembly
0 0 Lighting
Left Ignition Sensor RightIgnition Sensor
Dimmer Control Assembly Leftand RightPilotHeat Sensors LeftandRightStall Warning CurrentSensors
a
Electricaland ElectronicEquipmentLocations
Figure 402 (Sheet2 of 4)
EFFECTIVITY: 040-999
PAGE
25-70-00
Jan 10/90 3
PIPER AIRCRAFT
PA-42-720 (Advanced Tralner)
MAINTENANCEMANUAL
A. AccessoryCompartments(continued)
VIEW B
Leftand Right WindshieldHeat
Timers
Leftand Right Jet Pump DisengageRelays
Left andRight Start Flap Warning Relay
Gear Warning Relay
FlapControlAmplifier
Left and Right Fuel
Pump Relays
DeiceTimer
LandingLight Solonold
Taxi Light Solonoid
Left Windshield Heat Contactor
Electricaland Electronic EquipmentLocations Figure402 (Sheet 3 of 4)
EFFECTIVITY: 040-999
Jan10/9025-70-00
PIPERAIRCRAFT
PA-42-720(Advanced Trainer)
MAINTENANCEMANUAL
A. Accessory Compartments (continued)
VIEW C
Avionics 1 and 2 Relays
VIEW D
Left and Right
StallWarning
VIEW E CurrentSensors
and Horn
Fuel FlowSignal
Conditioner
ElectricalandElectronicEquipmentLocations
Figure402 (Sheet4 of 4)
EFFECTIVITY:
040-999
25-70-00PAGE5
Jan 10/90
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