Bell 429 - Page 18

BHT-429-MPI
Inspection,SpecialDetailedAnintensiveexaminationofaspecicitem,installation,orassemblytodetect
damage,failure,orirregularity.Theexaminationislikelytomakeextensiveuse
ofspecializedinspectiontechniquesand/orequipment.Intricatecleaningand
substantialaccessordisassemblyproceduresmayberequired.
Inspection,ZonalAcollectivetermcomprisingselectedgeneralvisualinspectionsandvisualchecks
thatisappliedtoeachzone,denedbyaccessandarea,tochecksystemand
powerplantinstallationsandstructureforsecurityandgeneralcondition.
Inspection,Non-scheduled
Aninspectionthatisnotpartofaschedule.
Inspection,OpportunityAninspectionthatisperformedinconjunctionwithanotherscheduledinspection
ormaintenancetask,whileinthesameareaorzone.
Interval,Initial
Intervalbetweenthestartofservice-lifeandthersttaskaccomplishment.
Interval,Repeat
Theinterval(aftertheinitialinterval)betweensuccessiveaccomplishmentsof
aspecicmaintenancetask.
Item
Anylevelofhardwareassembly(e.g.,system,subsystem,module,accessory,
component,unit,part,etc.).
Lubrication
SeeServicing.
Maintenance
Theservicingand/ortherepairofahelicopter,asystem,oracomponentto
maintainitsserviceability.
Maintenance,Preventive
Todosmallmaintenanceaction(s)onaregularbasistopreventnon-scheduled
maintenance.
MaintenanceSignicantItem
(MSI)
Itemsidentiedbythemanufacturerwhosefailure:
1.couldaffectsafety(ongroundorinight),and/or
2.isundetectableduringoperations,and/or
3.couldhavesignicantoperationalimpact,and/or
4.couldhavesignicanteconomicimpact.
OperatingTimeActualighttimeorcalendartimethatmustberecordedintheHistoricalService
Records(HSR)orinthehelicopterlogs.Theoperatingtimeisspeciedas
Time-in-Service(FlightTime)and/orCalendarTime.
OperationalCheckAtasktodeterminethatanitemisfulllingitsintendedpurpose.Itdoesnot
requirequantitativetolerances.Thisisafailurendingtask.
Program,Lead-The-Fleet(LTF)Aprogramusedtovalidatetheperformanceofanapprovedproductimprovement
orachangetoamaintenanceinterval.Theengineeringaspectsofthischange
areapproved.TheprogramiscloselymonitoredbyBellHelicopterT extron(BHT)
inanoperationalenvironmentwithselectedoperators.
Program,Special
Anapprovedprogramthatmaybeinitiatedundercertainspecialconditionsto
meetspecicrequirements.Theprogramisclearlydenedthroughaplanandthe
engineeringandmaintenanceaspectsareapprovedbytheregulatoryauthorities.
ProtectiveDevice
Anydeviceorsystemthathasafunctiontoavoid,eliminate,orreducethe
consequencesofaneventorthefailureofsomeotherfunction.
ResidualFuel
Theamountofunusablefuelthatcanbedrained.
RetirementIndexNumber(RIN)Thisisforcomponentssensitivetooperationalevents,suchasnormallandings,
run-onlandings,andautorotationlandings.Thisnumberisbasedonthefatigue
damagethatresultsfromtheseevents.
SafetySafetyshallbeconsideredasadverselyaffectediftheconsequencesofthefailure
conditionwouldpreventcontinuedsafeightandlandingofthehelicopterand/or
mightcauseseriousorfatalinjurytohumanoccupants.
ScaleReadingThevaluerecordeddirectlybyascalebeforesubtractingthetareweight.
SecurityThepresenceofattachingpartsthatareproperlytightenedorappeartobe,and
thepresenceofproperlyinstalled(asrequired)lockingdevicessuchaslockwire,
cotterpins,orother.
ServicingAnyactoflubricatingorservicingforthepurposeofmaintaininginherentdesign
capabilities.
429-A-00-71-00-00A-006A-AApplicableto:ALL
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