Bell 429 - Conditional Inspections - One Engine Inoperative (OEI) Limit Override; Table 1. Conditional Inspections - One Engine Inoperative (OEI) Limit Override

BHT-429-MPI
ConditionalInspections-OneEngineInoperative(OEI)LimitOverride
Table1.ConditionalInspections-OneEngineInoperative(OEI)LimitOverride
INITIAL
DATAREFERENCEINSPECTIONTASKDESCRIPTION
MECHOTHER
DATE:
W.O.
FACILITY:
HELICOPTERS/N:
REGISTRYNO.:
TOTALTIME:
SIGNATURE:
NOTE
Iftheinformationcontainedinthefollowingconditionalinspection
doesnotfullyreecttheoccurrenceorifadditionalinformationor
claricationisrequired,pleasecontactProductSupportEngineer-
ingforassistance.
UseofaOneEngineInoperative(OEI)limitoverrideisaneventwhereby
theengineanddrivesystemaretakentoanotherlevelofpower
abovetheallowable30-secondOEIratings.Thecapabilitytooverride
30-secondOEIlimitsisintendedforaonetimeuse,lastresorteffortto
preventorreducetheeffectofhittingthegroundorotherobstacles.This
overridefeatureallowsforadditionalsafetyforcrewandpassengersin
anexceptionalemergency.
IftheOEIlimitoverridefeaturehasbeenused,dothefollowing:
NOTE
TheDisplayUnit(DU)willmonitorandrecordparameterex-
ceedancesandOEIeventsformaintenancepurposes.TheDU
willprovideaOVRDUSEDwarningmessageindicatingthatan
OEIlimitoverridehasbeenrecorded.
429-MM,Chapter95
1.Fordetailedmaintenanceactions,gototheOEIhistorydisplayonthe
DUandviewtheOEIexceedances.
2.IfanOEIexceedancehasoccurred,dothefollowinginspections:
429-MM,Chapter71POWERPLANT
PW207D1/D2MM(P/N
3071602)
1.Dotheapplicablemandatoryenginemaintenanceactions.Referto
theairworthinesslimitationsectionoftheenginemaintenancemanual.
429-MM,Chapter63MAINROTORDRIVESYSTEM
1.Doaninspectionofeachengine-to-transmissiondriveshaftasfollows:
a.Examinetheengine-to-transmissiondriveshaftforconditionand
securityofattachment.
b.Ifanydamageisfoundontheengine-to-transmissiondriveshaft,
removeanddiscardthedriveshaft.
c.Ifnodamageisfoundontheengine-to-transmissiondriveshaft,the
driveshaftisserviceable.
2.Removethetransmissionassembly.
3.AttachaTHISCOMPONENTWASREMOVEDFROMSERVICE
BECAUSEOFANOEILIMITOVERRIDE–USEOF ,ONTHENUMBER
_____ENGINEtag(specifyNo.1orNo.2engine)onthetransmission
assembly.
4.Sendthetransmissionassemblytoanapprovedrepairfacilityto
disassemble,clean,anddoadetailedinspection.
Applicableto:ALL429-A-05-50-00-06A-284A-A
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