Textron Bell 412, Руководство по обслуживанию

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BHT-412-MM-2
5-00-00
2 SEP 2014 Rev. 20 Page 3 Export Classification C, ECCN EAR99
INSPECTIONS
5-1. GENERAL
This chapter contains the requirements for Scheduled,
Special, and Conditional Inspections, and a
Component Overhaul Schedule.
WARNING
FAILURE TO CORRECT CONDITIONS
S U C H A S , B U T N O T L I M I T E D T O ,
CORROSION, EROSION, MECHANICAL
DAMAGE, OR OBVIOUS WEAR FOUND
DURING A SCHEDULED INSPECTION
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.
These inspection requirements constitute an approved
inspection program designed and recommended by
Bell Helicopter Textron for the Model 412 Series. They
can be utilized by registered owners or operators who
desire to develop a progressive inspection system to
be used as part of the complete maintenance
program. A written request for approval to use the
progressive inspection system shall be submitted to
the governing civil aviation authority having jurisdiction
over the area in which the owner or operator is
located. Relief from the requirements in this chapter
can be requested through the local aviation authority.
For the convenience of the operator, two separate
scheduled inspections are provided as follows:
• Part A Scheduled inspections consist of a
daily inspection, 100 hour/12 calendar month
inspection, 1000 hour inspection, and
5000 hour/5 year inspection.
• Part B Scheduled inspections consist of a
25 hour/30 day inspection, 300 hour/
12 month, 600 hour/12 month inspection, and
5000 hour/5 year inspection.
Either series of inspections may be utilized. However,
once a helicopter has been started on either
inspection program, it shall be maintained on that
program except as follows:
• If a helicopter is being inspected on the Part A
inspection program and it is desired to change
to the Part B inspection program, a complete
Part A 1000 hour inspection shall be
accomplished. The helicopter may then be
changed to the Part B inspection program
beginning with a 25 hour/30 day inspection.
• If a helicopter is being inspected on the Part B
inspection program and it is desired to change
to the Part A inspection program, a complete
600 hour inspection shall be accomplished.
The helicopter may then be changed to the
Part A inspection program beginning with a
daily inspection.
The inspection intervals given in this chapter are the
maximum permitted. Do not exceed these intervals.
The owner/operator is responsible for increasing the
scope and the frequency of the inspections as
necessary. Make sure the helicopter is maintained
safely during all unusual local changes, such as
environmental conditions, helicopter use, etc. You can
request changes to the requirements in this chapter
through the local aviation authority.
The inspection intervals and the component overhaul
schedule provided in this chapter are applicable only
to Bell Helicopter Textron approved parts.
NOTE
The time period given for the overhaul of a
component (or the failure to give a time
period for the overhaul of a component)
does not constitute a warranty of any kind.
The only warranty applicable to the
helicopter or any component is the
warranty included in the Purchase
Agreement for the helicopter or the
component.
The Time Between Overhaul (TBO) and the inspection
periods are determined through experience, tests,
Lead The Fleet (LTF), or any other special programs
and the judgement of Bell Helicopter Textron
engineers. They are subject to change only by Bell
Helicopter Textron or an approved Airworthiness
Authority.
Changes to the TBO will be introduced by either
revisions to this chapter or a Technical Bulletin.