PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
CHAPTER 34
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PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
CHAPTER 34 -NAVIGATION
TABLE OF CONTENTS
SUBJECT CHAPTER PAGE
34-00-00
General 1 Description and Operation 2 Instrument Panel 2 Instruments 2 Removal and Installation of Panel Mounted Instruments 3 Removal of Bezel Mounted Instruments 3 Installation of Bezel Mounted Instruments 3 Removal of Clamp Mounted Instruments 3 Installation of Clamp Mounted Instruments 3
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FlightEnvironmentData 1 Fault Isolation (Pitot/Static) 1 Pitot/Static Sysem Test 7 Inspection and Checks of Instruments and System 8 "q"- Differential Pressure System 9 "q" Sensor Functional Check 9 Ground Check Procedure 9 FlightCheckProcedure 10
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PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL
Navigation
A. General
ThePA-42-720includespanelmountedinstrumentsandgauges,providingtheflightcrewwith continualmonitoringofengineperformance, andothermiscellaneous
flightcharacteristics, functions. Inaddition,anannunciatorpanel,mountedatthecenteroftheglareshield,providesthecrewwith visualwarningandadvisoryindicationsof aircraftsystemfunctions.Enginepowerlevers,propellerpitch,enginestartcontrols,elevatortrim,ailerontrim,ruddertrimwheels,andthemaincircuit protectionpanelaremountedonapedestallocatedat bottomcenterofinstrumentpanel.Locatedon theleftandrightsidesofcrewcompartment
areplasticcircuitprotectionpanelswith electroluminescent
lighting.Anoverheadpanelcontainsenginecontrolswitchesandmiscellaneous systemswitchesandgauges.
Instrument Glareshield
Panel
Overhead
Panel
Left Fuel Right
Control Circuit
Breaker Main Panel Breaker
Panel Circuit Panel
Left Outboard Right -Outboard
Subpanel Subpanel
FlightDeck
Figure1
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PIPERAIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCE MANUAL
B. Description and Operation
1. Instrument Panel (Figure 2)
The instrument panel consists of three upper metal panels and four electroluminescent plastic lower panels. The upper right and upper left panels contain a flight instrument grouping and a clock. The center panel contains power plant instruments and other related gauges. The four lower panels contain various switches, controls, warning lights, and gauges for monitoring and controlling aircraft functions. Refer to 23-00-00 for avionics information.
EngineInstrument -AnnunciatorPanel
Section
Stall Warning Avionics(RadioPanel)Section
Pilot'sFlight
Instrument- Flight
nt
ction
Glare
Shield
LeftOutboard RightOutboard
Electroluminescent Electroluminescent
Panel Panel
Left Inboard RightInboard
Electroluminescent Electroluminescent
Panel Panel
InstrumentPanel
Figure2
2. Instruments
TheinstrumentsofthePA-42-720areeitherelectricalornon-electrical.Maintenancemustbe performedby a certified repairstationor instrument manufacturer.Makeadjustmentswhere specified.
The majorityof instrumentation is attached to the instrumentpanelwitheither a bezel or clamp. The flight instrumentsarebezelmounted,the engineinstrumentsclampmounted,andthe lower panels areeitherbezelor clamp mountedattachedwith screws.
NOTE: Whenremovinganindividualpanelmountedinstrumentor an entireinstrumentpanel, preventcontactoftheinstrumentfacesandknobswiththecontrolcolumn.Contactwith thecolumncouldcausedamagetotheinstruments.Handleall gyro driveninstruments withextremecaretopreventballdentingof the rotor bearings.
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