Bell 429 - Page 139

BHT-429-MPI
Table1.ConditionalInspections-HardLanding(continued)
INITIAL
DATAREFERENCEINSPECTIONTASKDESCRIPTIONMECHOTHER
(1)Removethemastassembly.
(2)AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFAHARDLANDINGtagonthemastassembly.
(3)Sendthemastassemblytoanapprovedrepairfacilitytoadetailed
inspectionofthemastassembly,includingacheckofthemast
straightnessandT otalIndicatedRunout(TIR).
BHT-429-FM-1,Section2
2.Doapreightcheckandifnootherdamageisfound,returnthe
helicoptertoservice.
Ifdamagewasfoundotherthanabentlandinggearcrosstubeassembly
orayieldedordeformedlowermountassembly,dothefollowingdetailed
inspections:
429-MM,Chapter53FUSELAGE
1.Doasymmetrycheckofthefuselageandtailboom.
2.Ifdamageisfoundindicatingapossiblemisalignmentofthefuselage,
dothefollowing:
a.ContactProductSupportEngineeringforinformationconcerning
thepossiblerepairproceduresandapprovedrepairfacilities,andthe
associatedequipmentrequiredtoconrmthestructuralalignment.
b.Removethefollowingcomponents:
429-MM,Chapter63
•Transmissionassembly.
•Mastassembly.
429-MM,Chapter65•Engine-to-transmissiondriveshafts.
c.AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFAHARDLANDINGtagoneachcomponent.
429-MM,Chapter63
d.Sendthetransmissionassemblytoanapprovedrepairfacilityto
disassemble,clean,anddoadetailedinspection.
e.Disassemble,clean,anddoadetailedinspectionofthemast
assembly.
429-MM,Chapter63
f.Cleananddoadetailedinspectionofeachengine-to-transmission
driveshaft.
429-MM,Chapter65
g.Removeandexamineallthecomponentsofthetailrotordriveshaft
assemblyforcondition.
3.Ifdamageisfoundindicatingapossiblemisalignmentofthetailboom,
dothefollowing:
a.ContactProductSupportEngineeringforinformationconcerning
thepossiblerepairproceduresandapprovedrepairfacilities,andthe
associatedequipmentrequiredtoconrmthestructuralalignment.
b.Removethetailrotorgearbox.
c.AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFAHARDLANDINGtagonthetailrotorgearbox.
d.Sendthetailrotorgearboxtoanapprovedrepairfacilityto
disassemble,clean,anddoadetailedinspection.
429-MM,Chapter65
e.Removeandexamineallthecomponentsofthetailrotordriveshaft
assemblyforcondition.
NOTE
Damageordistortionofthetailskidandtailskidmountingpoints
ontheverticalnisnotcausetosendthetailboomforrepair.
Applicableto:ALL429-A-05-50-00-00A-284A-A
ECCNEAR99
10JAN2019-Issue1Page3