EFFECTIVITY:
040-999

PAGE8 27-00-00
Jan 10/9027-00-00
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL

A. AileronandTab
1. FaultIsolation-AileronControlSystem
CHART 1 FAULTISOLATION(AILERONCONTROLSYSTEM) (Sheet1of 2)
Fault
Lostmotionbetween controlwheeland aileron.
Resistanceto control wheelrotation.
Controlwheelsnot synchronized.
Cause Cabletensiontoo low. Linkagelooseorworn.
Brokenpulley.
Cablesnotin placeon
pulleys.
Improperrigging.

Systemnot lubricated properly.
Cabletensiontoo high.
Controlcolumnchain improperlyadjusted.
Pulleysbindingor rubbing.
Cablesnot in placeon pulleys.
Bentaileronand/orhinge.
Cablescrossedor routedincorrectly.
Interferencebetween fittings.
Incorrectcontrol columnrigging.
Remedy
Adjustcabletension.
Checklinkageandtighten orreplace.
Replacepulley.
Installcablescorrectly. Checkcableguards.
Checkriggingin the controlcolumn and crossover(torquetube)shaft, and at the bellcranksin thefuselage and the wings.
Lubricatesystem.
Adjustcabletension.
Adjustchaintension.
Replacebindingpulleysand/orprovide clearancebetweenpulleys and brackets.
Installcablescorrectly. Checkcableguards.
Repairor replaceaileronand/orhinge.
Checkroutingof control cables.
Checkcontrolcolumnfittingsin pilot's controlcolumn. Linkagesto
bellcrankfromcontrolcolumn.
Rig andcheckrollerchainfirmness betweenthe twocontrolwheels.

EFFECTIVITY:

040-999
27-10-00Jan
10/90

PIPER AIRCRAFT
PA-42-720 (Advanced Trainer)
MAINTENANCEMANUAL

A. Aileronand Tab (continued)
1. Fault Isolation -Aileron Control System (continued)
CHART 1
FAULT ISOLATION (AILERON CONTROL SYSTEM) (Sheet 2 of 2)

Fault  Cause  Remedy 
Control wheels not horizontal when  Incorrectrigging of aileronsystem.  Rig. 
ailerons are neutral. 
Incorrectailerontravel.  Aileron control rods not  Adjust. 
adjusted properly. 
Aileron bellcrank stops  Adjust an d check all bellcranks 
notadjustedproperly.  in the fuselage and wings. 

Correct aileron travel  Incorrectriggingof  Rig. 
cannot be obtained by  aileron cables, control 
adjusting bellcrank stops.  wheel and control rod. 
Control wheel stops before control surfaces  Incorrectriggingbetween controlwheel and control  Rig. 
reach full travel.  cables. 

EFFECTIVITY: 040999 Jan 10/90 27-10-00
PIPER AIRCRAFT PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL

A. Aileron and Tab (continued)
2. Fault Isolation -Aileron Trim Control System
CHART 2 FAULTISOLATION(AILERONTRIM CONTROL SYSTEM)
Fault
Lost motion between trim control wheel and trim tab.
Trimcontrolwheel moves with excessive resistance
Trim tab fails to reach full travel.
Trim indicator fails to
indicate correct trim
position.
Cause

Cable tension too low.
Cablesnotin place on pulleys. Broken pulley. Linkage loose or worn.
Systemnot lubricated properly.
Cable tension too high.
Pulleysbindingor rubbing.
Cablesnot in place on pulleys.
Trim tab hinge binding.
Cables crossed or routed incorrectly.
Systemincorrectly
rigged.
Eitheror both trim drums incorrectly wrapped.
Trim indicator unit not
adjustedproperly.
Remedy
Adjust.
Installcablescorrectly. Check cable guards.
Replace pulley.
Checklinkage and tightenor replace.
Lubricate system.
Adjust.
Replacebindingpulleys. Provideclearancebetween pulleysand brackets.
Install cables correctly. Checkcableguards.
Lubricatehinge. If necessary,replace.
Checkroutingof control cables.
Check and/or adjust rigging.
Checkand/oradjust rigging.
Adjust.

EFFECTIVITY:

040-999

PAGE

27-10-00Jan10/90
PIPERAIRCRAFT
PA-42-720(AdvancedTrainer)
MAINTENANCEMANUAL

A. Aileronand Tab (continued)
3. Removalof Aileron (referto 57-10-00 Figure401)
(a)
Removerear fairingbetweenwingandwing tip tank.

(b)
Removewing tip aft attachment rib.

(c)
Disconnectaileroncontrolrod.

(d)
At rightaileron,disconnecttrimtab controlrod.

(e)
Removehingeboltsandremoveaileron.

4. Installationof Aileron (referto 57-10-00Figure401)
(a)
Placeaileronin position. Installhingebolts.
　
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