Bell 429 - Page 146

BHT-429-MPI
Table1.ConditionalInspections-SuddenStoppage(MainRotor)PowerONorOFF(continued)
INITIAL
DATAREFERENCEINSPECTIONTASKDESCRIPTION
MECHOTHER
(4)Sendthetransmissiontoanapprovedrepairfacilitytodisassemble,
clean,anddoadetailedinspectionofthetransmissionassembly,
includingNDTinspectionofthemainandtopcasemembersofthe
casesetassembly.
d.Ifthemastshowsnosignoftorsionalyieldingandifthetransmission
assemblyshowsnosignsofdamage,dothefollowing:
(1)Removethemastassemblyandthetransmissionassembly.
(2)AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFASUDDENSTOPPAGEtagonthemastassemblyand
onthetransmissionassembly.
429-MM,Chapter63
(3)Disassemble,clean,anddoadetailedinspectionofthemast
assembly.
429-MM,Chapter63
(4)Sendthetransmissionassemblytoanapprovedrepairfacilityto
disassemble,clean,anddoadetailedinspection.
2.Forhelicopters57001through57066,visuallyexaminetheattachment
pointsofthettingassembliesontheadapterassembliesforcondition.
Iftheadapterassembliesaredamagedintheseareas,dothefollowing:
a.Discardtheadapterassemblies.
b.Removethemastassemblyandthetransmissionassembly.
c.AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFASUDDENSTOPPAGEtagonthemastassemblyand
onthetransmissionassembly.
429-MM,Chapter63
d.Disassemble,clean,anddoadetailedinspectionofthemast
assembly.
429-MM,Chapter63
e.Sendthetransmissionassemblytoanapprovedrepairfacilityto
disassemble,clean,anddoadetailedinspection.
3.Forhelicopters57067andsubsequent,visuallyexaminethe
attachmentpointsofthettingassembliesonthetransmissionassembly
forcondition.Ifthetransmissionassemblyisdamagedinthisarea,do
thefollowing:
a.Removethemastassemblyandthetransmissionassembly.
b.AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFASUDDENSTOPPAGEtagonthemastassemblyand
onthetransmissionassembly.
429-MM,Chapter63
c.Disassemble,clean,anddoadetailedinspectionofthemast
assembly.
429-MM,Chapter63
d.Sendthetransmissionassemblytoanapprovedrepairfacilityto
disassemble,clean,anddoadetailedinspection.
4.Visuallyexaminethepylonbeamassemblies,verticalLIVEmounts,
andpitchrestraintspringassembliesforconditionandreplacethe
applicablepart(s)asrequired.
5.Visuallyexaminethettingassembliesandthestoppinsforcondition
andreplacetheapplicablepart(s)asrequired.
6.Visuallyexaminetheattachmentpointsofthepylonbeamassemblies
andstoppinsonthecabinroofbeamsforcondition.Iftheroofbeam
structuretocabinroofisdamagedattheattachmentpointlocation,
contactProductSupportEngineeringforinformationconcerningthe
possiblerepairproceduresandapprovedrepairfacilities,andthe
associatedequipmentrequiredtoconrmthestructuralalignment.
7.Discardtheengine-to-transmissiondriveshafts.
429-MM,Chapter65TAILROTORDRIVESYSTEM
429-A-05-50-00-01A-284A-AApplicableto:ALL
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