PILOTS’ OPERATING NOTES - aircraftspruce.com file901-006 pilots’ operating notes central warning panel and master caution master warning

901-006

PILOTS’ OPERATING NOTES

CENTRAL WARNING PANEL AND MASTER CAUTION MASTER WARNING

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OVERVIEW

Overview CongratulationsonyourpurchaseoftheAeroSafetySystems’CentralWarningPanel(CWP)andMasterCaution(MC).Thispurchaserepresentsanimportantinvestmentinyoursafety.Goodchecklistdrillsandcockpitscanswillalwaysbeessentialforgoodairmanshipandresponsiblecaptaincy,butforthosetimeswhenyouneedtofocusonadifficulttaskortosharpenyourlookoutincongestedairspace,it’sreassuringtoknowthatsafetycriticalitemsorflightconditionsarestillbeingmonitored.

Operating Notes

YourCWPwilltypicallyhavelegends,voicealerts,EFISintegrationandlogicpre-configuredbythefactorytoyourspecificrequirements.Itisimportanttoreadthecustomizationdocumentationthatcamewithyourunittounderstandthelogic,andthisshouldbeappendedtothesepilotsnotes.Anexamplelayoutisshownbelow:

AH501 MASTER CAUTION

A B C D

1 2 3 4

AH500 CENTRAL WARNING

The SD equipped CWPs allow easy customization of the logic and voice alerts. It is the installers responsibility to document any changes to the logic and append the logic in the pilots notes.

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Be aware

Forallthesewarningsandcautionstofunctionproperly,theCWPwillhavebeenspecified,configured,installedandwiredwithcarefulthoughttothelogicandinaccordancetothefittinginstructionssuppliedwiththekit.IfyouwerenotresponsibleforfittingtheCWPyourself,asktheinstallerforalogicdocumentandwiringdiagram.Somewarningsorcautionsmaynothavebeenenableddependinguponaircrafttypeinwhichcasetheseshouldbemarkedwiththeblank“-------“legend.SomelegendlogicrequiresdatafromexternaldatafeedsfromanEFISorEnginemonitoringsystem.ThislogicrequirestheEFISanddatafeedtobeoperational.

Switchingthesystemon

Thecentralwarningsystemshouldbewiredtobeautomaticallyswitched onwiththeelectricalmasterswitch. TheCWPfeaturesautoacknowledgeonstartuptopreventunnecessaryflashingcaptionsandvoicealerts.OnPowerup,CWPlegendlogicthatisactivewillilluminatesteady(i.e.notflash)andtherewillbenovoicealerts.Forexample,oninitialpoweronandsincetheengineisnotyetrunning,aLOWOILPRESSUREwarningwouldilluminatesteady(notflash)aswouldtheassociatedMasterWarningCaption.Therewouldbenoaudiovoicealerts.Afterenginestart,thecaptionbecomesinactive,andonlyonreactivationwouldtheLOWOILPRESUREcaptionandMasterWarningflashwiththeassociatedvoicealert.

Testingthesystem

TheCWPcanbetestedatanytimebypressingtheTESTbuttonontheCWPpanel.PressingtheTESTbuttonwillbringalllegendsonsteadyandalsobringonthemastercautionWARNINGandCAUTIONlamps.Indaylight,illuminationlevelsshouldbefullbrightness(sunlightreadable).Inlowlightconditions(e.g.duskornight),theilluminationlevelwillautomaticallybedimmed.Thiscanbetestedbyplacingafingerofthelightsensorwheninbrightlight.WhiletheTESTbuttonishelddepressed,alllampsshouldremainsteadyandthevoice‘TEST-TEST’audioshouldbeheard.Thistestcanbeperformedatanytimeonthegroundorinflighttoconfirmthatthesystemisfunctioningcorrectly.AudiovoicevolumeispresetduringmanufacturebutcanbeadjustedusingatrimpotentiometerlocatedattherearoftheCWPpanel.

AfterEngineStartandPreTake-off

Afterenginestart,warningsorcautionsapplicabletoengineparameterswillextinguish.Similarly,captionsrelatingtoconfigurationwillextinguishsuchasaparkingbrakealertwhenreleasedandcabindoorswhenclosed.Onceawarningorcautionlegendhasbeenextinguishedafterstart(orwasnottriggeredinthepre-startstate),anysubsequentfaultconditionwilltriggertheappropriateCWPandMastercautionorwarning,andassociatedvoiceaudioasapplicable.ThusALLlegendsshouldbedark(unilluminated)fortake-offandthischecke.g.‘CWPCLEAR’shouldbeincludedinyourPRETAKE-OFFchecks.

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Note:Thelogicconfigurationallowsanumberofdifferentvoicealertstobeassociatedwithasinglecaption.Thisexpandstheamountofinformationavailabletothepilotbeyondthe8or16captions.Thiscanbeusefulformanyalerts,oneexamplebeing‘CheckGear’whereanumberofretractablegearproblemscanbemonitoredwithlimitswitchesandEFISairspeed/HeightAGLtogenerateasingle‘CheckGear’caption,butanumberofvoicealertsasshowninthisexample:

• “Warning!ThePortGearisnotlockeddown”(DownLimitswitchnotclosedwithin‘x’secondsofgeardownselected)

• “Warning!TheNosegearisnotlockeddown”(DownLimitswitchnotclosedwithin‘x’secondsofgeardownselected)

• “Warning!Landinggearisnotdown”(Airspeedbelow‘x’,HeightAGLbelow‘y’,gearnotdown)• “Caution!TheStarboardgearisnotup”(UPLimitswitchnotclosedwithin‘x’secondsofgeardown

selected)• etc.

WhenWarningsorCautionsaretriggered

Ifatanytimeanyalogicbecomesactive,thewarningorcautionwillbeindicatedasfollows:• Therelevantvoiceaudiowillsoundinaclear,calmvoicee.g.‘CHECKGEAR’• TheMCWARNINGlamportheMCCAUTIONlampwillflashasappropriate.• TherelevantwarningorcautionlegendwillflashontheCWP.

PressingtheMASTERCAUTIONbuttonwillacknowledgethewarningorcautionand:

• Mutethevoiceaudio,• TurntheMasterCautionorMasterWarningcaptiontosteady,• TurntheapplicableflashingCWPlegendtosteady.

Thepilot’sattentionhavingbeenbroughttothesystemfailureorconfigurationanomaly,check-listproceduresshouldthenbefollowedandappropriateactionstaken.Forsomewarningsorcautions,however,amoreimmediate(learned)pilotreactionmayberequired;forexamplea“Gearnotdown”voicealertmaymeanthatgearisnotdownatapproachspeed(assetinthelogicconfiguration)andCHECKFLAPSmaymeanthatyouareabouttoexceedthe(pre-set)flaplimitingspeed.TheCWPsystemremainsalerttoanyotherwarningorcautionsituation(s)arisingsubsequentlyandwillthuswarnoffagainasindicatedaboveifanothersystemfailureorconfigurationanomalyoccurs.Conversely,ifafaultconditioniscorrected,thewarningorcautionlampwillextinguishbutwilltriggeragainifthefaultconditionreoccurs.

Onengine shut-down

Duringengineshut-down,engine-relatedWarningsandCautionswillbetriggeredasalertlogicbecomesactive(e.g.oilandhydraulicpressures/alternatoroutputetc).ThesecanbemutedbypressingtheMasterCautionbuttoninthenormalway.SwitchingoffthebatterymasterwillshuttheCWPsystemdownandre-setitforsubsequentstartup.