Bell 429 - Conditional Inspections - Main Rotor Overspeed; Table 1. Conditional Inspections - Main Rotor Overspeed

BHT-429-MPI
ConditionalInspections-MainRotorOverspeed
Table1.ConditionalInspections-MainRotorOverspeed
INITIAL
DATAREFERENCEINSPECTIONTASKDESCRIPTION
MECHOTHER
DATE:
W.O.
FACILITY:
HELICOPTERS/N:
REGISTRYNO.:
TOTALTIME:
SIGNATURE:
NOTE
Iftheinformationcontainedinthefollowingconditionalinspection
doesnotfullyreecttheoccurrenceorifadditionalinformationor
claricationisrequired,pleasecontactProductSupportEngineer-
ingforassistance.
Amainrotoroverspeedisanyincidentabove104%rotorRPM(N
R
)
(powerON)orabove107%N
R
(powerOFF).
MAINROTOROVERSPEED-UPTO117%
Ifamainrotoroverspeedupto117%hasoccurred,noairframe
inspectionisrequired.
PW207D1/D2MM(P/N
3071602)
1.Doanengineoverspeedinspection.
MAINROTOROVERSPEED-INEXCESSOF118%
Ifamainrotoroverspeedinexcessof118%hasoccurred,dothe
followinginspections:
429-MM,Chapter62MAINROTOR
1.Doaninspectionofeachmainrotorbladeasfollows:
a.Removeandcleanthemainrotorblade.
b.Visuallyexaminethemainrotorbladeforcondition.
c.Examinethebladeboltretentionbushingsforlooseness.
d.Examinethebalanceweightpocketforthefollowing:
•Gapbetweentheretainersandthewedgemorethan0.040inch(1.01
mm),asshowninFigure1.
•Damagetotheretainersandweights
•Bindingoftheretainersandweights
e.Ifanydamageisfoundonthemainrotorblade,dothefollowing:
(1)AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFAMAINROTOROVERSPEEDtagonthemainrotor
blade.
(2)Sendthemainrotorbladetoanapprovedfacilityforfurtherinspection
andrepair.
f.Ifnodamageisfoundonthemainrotorblade,thebladeisserviceable.
2.Ifanyyieldingofanexpandableorxeddiameterbladeboltisvisible,
discardthebolt.
3.Doaninspectionofthemainrotorhubassemblyasfollows:
a.Visuallyexaminethemainrotorhubassemblyforcondition.
b.Ifanydamageisfound,dothefollowing:
Applicableto:ALL429-A-05-50-00-03A-284A-A
ECCNEAR99
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