Textron Bell 412, Maintenance Manual

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FAA APPROVED BHT-412-MM-2
4-00-00
25 SEP 2018 Rev. 27 Page 5 Export Classification C, ECCN EAR99
AIRWORTHINESS LIMITATIONS SCHEDULE
4-1. AIRWORTHINESS LIMITATIONS
SCHEDULE
The Airworthiness Limitations section is FAA approved
and specifies maintenance required under Secs. 43.16
and [91.403] of the Federal Aviation Regulations
unless an alternative program has been FAA
approved.
WARNING
A L L R E PA I R A N D O V E R H A U L
PROCEDURES LIVES PUBLISHED BY
B E L L H E L I C O P T E R T E X T R O N ,
INCLUDING COMPONENT RETIREMENT
LIFE, ARE BASED SOLELY ON THE USE
O F B E L L A P P R O V E D PA R T S A N D
P R O C E S S E S . I F PA R T S O R
P R O C E S S E S D E V E L O P E D O R
APPROVED BY PARTIES OTHER THAN
BELL HELICOPTER ARE USED, THEN
THE DATA PUBLISHED OR OTHERWISE
SUPPLIED BY BELL HELICOPTER ARE
N O T A P P L I C A B L E . T H E U S E R I S
WA R N E D T O N O T R E LY O N B E L L
HELICOPTER DATA FOR PARTS AND
PROCESSES NOT APPROVED BY BELL
H E L I C O P T E R . A L L A P P L I C A B L E
INSPECTIONS AND REPAIR METHODS
M U S T B E O B TA I N E D F R O M T H E
S U P P L I E R O F T H E PA R T S O R
PROCESSES NOT APPROVED BY BELL
HELICOPTER. BELL HELICOPTER IS
NOT RESPONSIBLE FOR PARTS OR
P R O C E S S E S O T H E R T H A N T H O S E
WHICH IT HAS ITSELF DEVELOPED OR
APPROVED.
WARNING
C O N T I N U E D U S E O F A N Y T I M E /
C A L E N D A R / R I N L I F E L I M I T E D
COMPONENT PAST ITS STATED LIMITS
I S N O T P E R M I T T E D A S I T C O U L D
S E R I O U S LY A F F E C T T H E
AIRWORTHINESS OF THE HELICOPTER.
THE COMPONENT MUST BE REMOVED
FROM THE HELICOPTER NOT LATER
THAN THE END OF THE LIFE LIMIT. IT
M U S T E I T H E R B E M A D E
UNSERVICEABLE OR MARKED IN A
CONSPICUOUS MANNER TO PREVENT
CONTINUED USE, EVEN INADVERTENT
USE.
W H E N A R E P L A C E M E N T PA R T I S
INSTALLED, THE PART NAME, PART
N U M B E R , S E R I A L N U M B E R , A N D
C U R R E N T O P E R AT I N G H O U R S , I F
APPLICABLE, MUST BE RECORDED IN
THE HISTORICAL SERVICE RECORD
FOR THE ASSEMBLY OR HELICOPTER.
The mandatory airworthiness limitations schedule
(
Table 4-1 ) summarizes the mandatory maximum life,
in hours, years or by Retirement Index Number (RIN)
of components with a limited airworthiness life. Parts
that are not on the schedule have an unlimited
airworthiness life.
Refer to the engine manufacturer's publications for the
airworthiness limitations schedule of the engine and
components. For the PT6T-3 series engine, refer to
the Pratt and Whitney Service Bulletin No. 5002. For
the PT6T-9 Engine, refer to the Pratt and Whitney
Maintenance Manual airworthiness limitation section.
NOTE
The airworthiness life or inspection interval
for any part number contained in this
schedule applies to all the successive dash
numbers for that component unless it is
otherwise specified.