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concerned with the substance of this
proposal will be filed in the Rules
Docket.
Commenters wishing the FAA to
acknowledge receipt of their comments
submitted in response to this action
must submit a self-addressed, stamped
postcard on which the following
statement is made: ‘‘Comments to
Docket Number 98–ANE–38–AD.’’ The
postcard will be date stamped and
returned to the commenter.
Availability of NPRM’s
Any person may obtain a copy of this
NPRM by submitting a request to the
FAA, New England Region, Office of the
Regional Counsel, Attention: Rules
Docket No. 98–ANE–38–AD, 12 New
England Executive Park, Burlington, MA
01803–5299.
Discussion
On June 13, 2000, the FAA issued AD
2000–12–01, Amendment 39–11779 (65
FR 37031, June 13, 2000), to require
revisions to the Airworthiness
Limitations Section of the applicable
Engine Shop Manuals (ESM’s) for CFMI
CFM56–2, –2A, –2B, –3, –3B, –3C –5,
–5B, –5C, and –7B series turbofan
engines by adding additional focused
inspection procedures and increasing
the applicability of the CFM56 engine
models requiring enhanced inspection
of selected critical life-limited parts at
each piece-part exposure.
Additional Inspection Procedures
Since the issuance of that AD, CFMI
has identified additional critical lifelimited
parts requiring enhanced
inspections and has developed
additional focused inspection
procedures applicable to the High
Pressure Turbine (HPT) disk and the
HPT front rotating air seal. The
mandatory inspections are needed to
identify those critical rotating parts with
conditions, which if allowed to
continue in service, could result in
uncontained failures. This proposal
would modify the Airworthiness
Limitations Section of the applicable
ESMs to incorporate additional
inspection requirements.
Proposed Actions
Since an unsafe condition has been
identified that is likely to exist or
develop on other products of this same
type design, the proposed AD would
supersede AD 2001–12–01 to add
additional critical life-limited parts
requiring enhanced inspections at piece
part opportunity. The inspections
would be required at each piece-part
opportunity.
Economic Analysis
The FAA estimates that 5,100 CFM56
engines installed on airplanes of US
registry would be affected by this
proposed AD and that there are
approximately 2, 300 piece part annual
inspections that would be required. It
would take approximately 2, 775 work
hours to accomplish these inspections.
The average labor rate is $60 per work
hour. The total estimated annual cost of
the proposed new inspections on US
operators is expected to be
approximately $166,500.
Regulatory Analysis
This proposed rule does not have
federalism implications, as defined in
Executive Order 13132, because it
would not have a substantial direct
effect on the States, on the relationship
between the national government and
the States, or on the distribution of
power and responsibilities among the
various levels of government.
Accordingly, the FAA has not consulted
with state authorities prior to
publication of this proposed rule.
For the reasons discussed above, I
certify that this proposed regulation (1)
is not a ‘‘significant regulatory action’’
under Executive Order 12866; (2) is not
a ‘‘significant rule’’ under the DOT
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Taking up the Challenge
In 1995 TECNICHAPA started up the aerospace division.
This unit develops components and mechanic welded
precision assemblies from aerospace metallic materials.
The main applications are for structures, equipment's and
aircraft engines for the civil market.
The consolidated growth path is the result of being ahead
of its customer´s satisfaction. TECNICHAPA is now a
reference in terms of competitiveness, quality and service.
Following this successful background, in 2006
TECNICHAPA created Wallair Engine Components (WEC),
a specialised company acting in the Aerospace and
Defense market. The main goal is deepening its
partnerships among the main engine makers and
aerospace integrators.
Qualifications
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