Special Conditions: Pratt and Whitney Canada Model PW210S Turboshaft Engine, 40594-40596 [2011-17298]
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Federal Register / Vol. 76, No. 132 / Monday, July 11, 2011 / Rules and Regulations
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15:08 Jul 08, 2011
Jkt 223001
U.S.C. 601–612. The Department
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Signed at Washington, DC, on July 1, 2011.
Chavonda Jacobs-Young,
Acting Director, National Institute of Food
and Agriculture.
[FR Doc. 2011–17350 Filed 7–8–11; 8:45 am]
BILLING CODE 3410–22–P
Catalog of Federal Domestic Assistance
This final regulation applies to the
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administered by NIFA under the Catalog
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DEPARTMENT OF TRANSPORTATION
Unfunded Mandates Reform Act of 1995
and Executive Order 13132
[Docket No. NE131; Special Conditions No.
33–009–SC]
The Department has reviewed this
final rule in accordance with the
requirements of Executive Order No.
13132 and the Unfunded Mandates
Reform Act of 1995, 2 U.S.C. 1501 et
seq., and has found no potential or
substantial direct effects 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. As there is no
Federal mandate contained herein that
could result in increased expenditures
by State, local, or tribal governments, or
by the private sector, the Department
has not prepared a budgetary impact
statement.
Special Conditions: Pratt and Whitney
Canada Model PW210S Turboshaft
Engine
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Federal Aviation Administration
14 CFR Part 33
Federal Aviation
Administration (FAA), DOT.
ACTION: Final special conditions.
AGENCY:
These special conditions are
issued for Pratt and Whitney Canada
(PWC) model PW210S engines. The
engine model will have a novel or
unusual design feature which is a 30minute all engine operating (AEO)
power rating. This rating is generally
intended to be used for hovering at
increased power for search and rescue
missions. The applicable airworthiness
regulations do not contain adequate or
SUMMARY:
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Federal Register / Vol. 76, No. 132 / Monday, July 11, 2011 / Rules and Regulations
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appropriate safety standards for this
design feature. These special conditions
contain the added safety standards that
the Administrator considers necessary
to establish a level of safety equivalent
to that established by the existing
airworthiness standards.
DATES: The effective date of these
special conditions is August 10, 2011.
FOR FURTHER INFORMATION CONTACT: For
technical questions concerning this rule
contact Marc Bouthillier, ANE–111,
Engine and Propeller Directorate,
Aircraft Certification Service, 12 New
England Executive Park, Burlington,
Massachusetts 01803–5299; telephone
(781) 238–7120; facsimile (781) 238–
7199; e-mail marc.bouthillier@faa.gov.
For legal questions concerning this rule
contact Vincent Bennett, ANF–7 Engine
and Propeller Directorate, Aircraft
Certification Service, 12 New England
Executive Park, Burlington,
Massachusetts 01803–5299; telephone
(781) 238–7044; facsimile (781) 238–
7055; e-mail vincent.bennett@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
On December 5, 2005, PWC applied
for type certification for a model
PW210S turboshaft engine. This engine
consists of a two stage compressor
driven by a single stage uncooled
turbine, and a two stage free power
turbine driving a two stage reduction
gearbox. The control system includes a
dual channel full authority digital
electronic control. The engine will
incorporate a novel or unusual design
feature, which is a 30-minute AEO
power rating. This rating was requested
by the applicant to support rotorcraft
search and rescue missions that require
extensive operations at high power.
The applicable airworthiness
standards do not contain adequate or
appropriate airworthiness standards to
address this design feature. Therefore a
special condition is necessary to apply
additional requirements for rating
definition, instructions for continued
airworthiness (ICA) and endurance
testing. The 30-minute time limit
applies to each instance the rating is
used; however there is no limit to the
number of times the rating can be used
during any one flight, and there is no
cumulative time limitation. The ICA
requirement is intended to address the
unknown nature of actual rating usage
and associated engine deterioration. The
applicant is expected to make an
assessment of the expected usage and
publish ICA’s and airworthiness
limitations section (ALS) limits in
accordance with those assumptions,
such that engine deterioration is not
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15:08 Jul 08, 2011
Jkt 223001
excessive. The endurance test
requirement of 25 hours operation at 30minute AEO rating is similar to several
special conditions issued over the past
20 years addressing the same subject.
Because the PWC model PW210S
turboshaft engine has a continuous OEI
rating and limits equal to or higher then
the 30-minute AEO rating, the test time
performed at the continuous OEI rating
may be credited toward the 25-hour
requirement. However, test time spent at
other rating elements of the test, such as
takeoff or other OEI ratings (that may be
equal to or higher values), may not be
counted toward the 25 hours of required
running.
These special conditions contain the
additional airworthiness standards
necessary to establish a level of safety
equivalent to the level that would result
from compliance with the applicable
standards of airworthiness in effect on
the date of application.
Type Certification Basis
Under the provisions of 14 CFR
21.17(a) and 21.101(a), PWC must show
that the model PW210S turboshaft
engine meets the provisions of the
applicable regulations in effect on the
date of application, unless otherwise
specified by the FAA. The application
date is December 5, 2005, which
corresponds to 14 CFR part 33
Amendment 20. However, PWC has
elected to demonstrate compliance to
later amendments of part 33 for this
model. Therefore, the certification basis
for the PW210S model turboshaft engine
will be part 33, effective February 1,
1965, amended by Amendments 33–1
through 33–24.
The FAA has determined that the
applicable airworthiness regulations (14
CFR part 33, Amendments 1–24
inclusive) do not contain adequate or
appropriate safety standards for the
model PW210 turboshaft engine,
because of a novel or unusual rating.
Therefore, special conditions are
prescribed under the provisions of 14
CFR 11.19 and 14 CFR 21.16.
The FAA issues special conditions, as
defined by 14 CFR 11.19, in accordance
with 14 CFR 11.38, which become part
of the type certification basis in
accordance with § 21.17(b)(2).
Special conditions are initially
applicable to the model for which they
are issued. Should the type certificate
for that model be amended later to
include another related model that
incorporates the same or similar novel
or unusual design feature, or should any
other model already included on the
same type certificate be modified to
incorporate the same or similar novel or
unusual design feature, the special
PO 00000
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Fmt 4700
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40595
conditions would also apply to the other
model.
Novel or Unusual Design Features
The PWC PW210S turboshaft engine
will incorporate a novel or unusual
design feature which is a 30-minute
AEO power rating, for use up to 30minutes at any time between the takeoff
and landing phases of a flight. This
design feature is considered to be novel
and unusual relative to the part 33
airworthiness standards.
Discussion of Comments
Notice of proposed special conditions,
Notice No. 33–10–02–SC for the
PW210S engine model was published
on March 1, 2011 (76 FR 11172). One
comment letter was received. The
commenter stated disagreement with the
special condition requirement of
incorporating 25 hours of operation at
the 30-minutes AEO rating into the
§ 33.87 test profile. The commenter
proposing taking credit for the 30minute periods run at takeoff rating that
is part of the normal test profile
required by § 33.87(b), thereby reducing
the amount of test time at the new 30minute AEO rating. The FAA does not
concur. The takeoff rating and other
normal use ratings are defined within 14
CFR part 1 and the associated
requirements can be found in 14 CFR
part 33 Takeoff rating is limited in use
to a continuous period of not more then
5 minutes during takeoff operations,
which occurs each flight. The existing
§ 33.87 requirements are designed to
demonstrate engine durability for the
takeoff rating which is considered a
normal every flight operation, and is
independent of any other ratings The
proposed 30-minute rating is not
defined within 14 CFR, but has been
specifically requested by PWC. This
new rating can be used for periods of up
to 30-minutes at any time during a flight
for a variety of normal mission
purposes. Also, the number of usages
during a single flight is not limited; and
its use does not require special
maintenance actions. So this rating is
intended for normal mission use,
similar to takeoff and other normal use
ratings, and is different than limited
turboshaft one-engine-inoperative (OEI)
ratings. The OEI ratings for turboshafts,
with the exception of continuous OEI,
are for limited use during a flight and
in some cases limited cumulative use.
Therefore engine durability using the
30-minute AEO rating must be
demonstrated over and above the takeoff
rating and other normal use ratings
included in the rating structure. So the
baseline for endurance testing will be
§ 33.87(b) (no OEI rating). The FAA also
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11JYR1
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Federal Register / Vol. 76, No. 132 / Monday, July 11, 2011 / Rules and Regulations
finds that the test time associated with
the continuous OEI rating is an
appropriate baseline to define
additional requirements for this new
normal use 30- minute AEO rating.
Therefore, engine durability using this
rating must be demonstrated over and
above the takeoff rating and other
normal use ratings included in the
rating structure. No changes to the
special conditions have been made in
this regard.
The commenter also states that the 25
hour requirement is inconsistent with
§ 33.87 philosophies, stating that time at
any rating validates any lower rating.
This statement is incorrect. The test
requirements are established to
demonstrate engine durability at all
normal and emergency ratings and
associated limits. The test profiles
incorporate specific elements to this
end. The normal ratings all have
individual elements that must be
performed. The 30-minutes AEO rating
is a normal use rating that is expected
to be used with a frequency of
occurrence similar to the takeoff or
maximum continuous ratings, and must
have a specific and independent
element as part of the overall test. Also,
the expectation is that 30-minute AEO
will be used far more frequently than
any emergency 0E1 rating. These
emergency ratings must also be
demonstrated (when applicable)
however due to their limited use, these
elements of the test may overlap certain
normal rating elements found in the
various test profiles. The practice
mentioned by the commenter is applied
to OEI ratings only, because they are
rarely used and only in emergency
situations. Therefore, the frequency of
occurrence for normal use ratings
dictate that specific test time be
allocated to each rating, and that time
can’t be combined because a rating is
higher than another. No changes to the
special conditions have been made in
this regard.
The commenter also states that the
basis for 25 hours of required run time
was not described in the special
condition. The 25 hours was selected to
be between the basic cumulative run
time for takeoff rating (18.75 hours) and
maximum continuous rating (45 hours).
This requirement is weighted more
heavily toward the takeoff time due to
the severe nature of the rating and
intended operation. Therefore, no
changes to the special conditions have
been made in this regard.
Applicability
These special conditions are
applicable to the PWC PW210S turbo
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shaft engine. If PWC applies later for a
change to the type certificate to include
another closely related model
incorporating the same novel or unusual
design feature, these special conditions
may also apply to that model as well,
and would be made part of the
certification basis for that model.
Conclusion
We reviewed the available data,
including the comment received, and
have determined that air safety and the
public interest require adopting this
special condition with the changes
described above. This action affects only
certain novel or unusual design features
on one model of engine. It is not a rule
of general applicability, and it affects
only the applicant who applied to the
FAA for approval of this feature on the
engine product.
List of Subjects in 14 CFR Part 33
Air transportation, Aircraft, Aviation
safety, Safety.
The authority citation for these
special conditions is as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701–
44702, 44704.
The Proposed Special Conditions
Accordingly, the Federal Aviation
Administration (FAA) issues the
following special conditions as part of
the type certification basis for the PWC
PW210S turbo shaft engine.
1. PART 1 DEFINITION. Unless
otherwise approved by the
Administrator and documented in the
appropriate manuals and certification
documents, the following definition
applies to this special condition: ‘‘Rated
30 Minute AEO Power’’, means the
approved shaft horsepower developed
under static conditions at the specified
altitude and temperature, and within
the operating limitations established
under part 33, and limited in use to
periods not exceeding 30- minutes each.
2. PART 33 REQUIREMENTS.
(a) Sections 33.1 Applicability and
33.3 General: As applicable, all
documentation, testing and analysis
required to comply with the part 33
certification basis, must account for the
30-minute AEO rating, limits and usage.
(b) Section 33.4, instructions for
continued airworthiness (ICA). In
addition to the requirements of § 33.4,
the ICA must:
(1) Include instructions to ensure that
in-service engine deterioration due to
rated 30-minute AEO power usage will
not be excessive, meaning that all other
approved ratings are available within
associated limits and assumed usage, for
successive flights; and that deterioration
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Fmt 4700
Sfmt 4700
will not exceed that assumed for
declaring a time between overhaul
(TBO) period.
(i) The applicant must validate the
adequacy of the maintenance actions
required under paragraph (b)(1) above.
(2) Include in the airworthiness
limitations section (ALS), any
mandatory inspections and
serviceability limits related to the use of
the 30-minute AEO rating.
(c) Section 33.87, Endurance Test. In
addition to the requirements of
§§ 33.87(a) and 33.87(d), the overall test
run must include a minimum of 25
hours of operation at 30-minute AEO
power and limits, divided into periods
of 30-minutes AEO power with alternate
periods at maximum continuous power
or less.
(1) Modification of the § 33.87 test
requirements to include the 25 hours of
operation at 30- minute AEO power
rating must be proposed by the
Applicant and accepted by the FAA.
(2) Each § 33.87(d) continuous oneengine-inoperative (0EI) rating test
period of 30-minutes or longer, run at
power and limits equal to or higher then
the 30-minutes AEO raring, may be
credited toward this requirement. Note
that the test time required for the takeoff
or other OEI ratings may not be counted
toward the 25 hours of operation
required at the 30-minute AEO rating.
Issued in Burlington, Massachusetts, on
June 29, 2011.
Robert J. Ganley,
Acting Manager, Engine and Propeller
Directorate, Aircraft Certification Service.
[FR Doc. 2011–17298 Filed 7–8–11; 8:45 am]
BILLING CODE M
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2010–0853; Directorate
Identifier 2010–NM–116–AD; Amendment
39–16720; AD 2011–12–13]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Model 737–600, –700, –700C,
–800, –900, and –900ER Series
Airplanes
Correction
In rule document 2011–14344
appearing on pages 35327–35330 in the
issue of June 17, 2011, make the
following correction:
The table on page 35329 should read:
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]]>Agencies
[Federal Register Volume 76, Number 132 (Monday, July 11, 2011)]
[Rules and Regulations]
[Pages 40594-40596]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2011-17298]
=======================================================================
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 33
[Docket No. NE131; Special Conditions No. 33-009-SC]
Special Conditions: Pratt and Whitney Canada Model PW210S
Turboshaft Engine
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final special conditions.
-----------------------------------------------------------------------
SUMMARY: These special conditions are issued for Pratt and Whitney
Canada (PWC) model PW210S engines. The engine model will have a novel
or unusual design feature which is a 30- minute all engine operating
(AEO) power rating. This rating is generally intended to be used for
hovering at increased power for search and rescue missions. The
applicable airworthiness regulations do not contain adequate or
[[Page 40595]]
appropriate safety standards for this design feature. These special
conditions contain the added safety standards that the Administrator
considers necessary to establish a level of safety equivalent to that
established by the existing airworthiness standards.
DATES: The effective date of these special conditions is August 10,
2011.
FOR FURTHER INFORMATION CONTACT: For technical questions concerning
this rule contact Marc Bouthillier, ANE-111, Engine and Propeller
Directorate, Aircraft Certification Service, 12 New England Executive
Park, Burlington, Massachusetts 01803-5299; telephone (781) 238-7120;
facsimile (781) 238-7199; e-mail marc.bouthillier@faa.gov. For legal
questions concerning this rule contact Vincent Bennett, ANF-7 Engine
and Propeller Directorate, Aircraft Certification Service, 12 New
England Executive Park, Burlington, Massachusetts 01803-5299; telephone
(781) 238-7044; facsimile (781) 238-7055; e-mail
vincent.bennett@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
On December 5, 2005, PWC applied for type certification for a model
PW210S turboshaft engine. This engine consists of a two stage
compressor driven by a single stage uncooled turbine, and a two stage
free power turbine driving a two stage reduction gearbox. The control
system includes a dual channel full authority digital electronic
control. The engine will incorporate a novel or unusual design feature,
which is a 30-minute AEO power rating. This rating was requested by the
applicant to support rotorcraft search and rescue missions that require
extensive operations at high power.
The applicable airworthiness standards do not contain adequate or
appropriate airworthiness standards to address this design feature.
Therefore a special condition is necessary to apply additional
requirements for rating definition, instructions for continued
airworthiness (ICA) and endurance testing. The 30-minute time limit
applies to each instance the rating is used; however there is no limit
to the number of times the rating can be used during any one flight,
and there is no cumulative time limitation. The ICA requirement is
intended to address the unknown nature of actual rating usage and
associated engine deterioration. The applicant is expected to make an
assessment of the expected usage and publish ICA's and airworthiness
limitations section (ALS) limits in accordance with those assumptions,
such that engine deterioration is not excessive. The endurance test
requirement of 25 hours operation at 30-minute AEO rating is similar to
several special conditions issued over the past 20 years addressing the
same subject. Because the PWC model PW210S turboshaft engine has a
continuous OEI rating and limits equal to or higher then the 30-minute
AEO rating, the test time performed at the continuous OEI rating may be
credited toward the 25-hour requirement. However, test time spent at
other rating elements of the test, such as takeoff or other OEI ratings
(that may be equal to or higher values), may not be counted toward the
25 hours of required running.
These special conditions contain the additional airworthiness
standards necessary to establish a level of safety equivalent to the
level that would result from compliance with the applicable standards
of airworthiness in effect on the date of application.
Type Certification Basis
Under the provisions of 14 CFR 21.17(a) and 21.101(a), PWC must
show that the model PW210S turboshaft engine meets the provisions of
the applicable regulations in effect on the date of application, unless
otherwise specified by the FAA. The application date is December 5,
2005, which corresponds to 14 CFR part 33 Amendment 20. However, PWC
has elected to demonstrate compliance to later amendments of part 33
for this model. Therefore, the certification basis for the PW210S model
turboshaft engine will be part 33, effective February 1, 1965, amended
by Amendments 33-1 through 33-24.
The FAA has determined that the applicable airworthiness
regulations (14 CFR part 33, Amendments 1-24 inclusive) do not contain
adequate or appropriate safety standards for the model PW210 turboshaft
engine, because of a novel or unusual rating. Therefore, special
conditions are prescribed under the provisions of 14 CFR 11.19 and 14
CFR 21.16.
The FAA issues special conditions, as defined by 14 CFR 11.19, in
accordance with 14 CFR 11.38, which become part of the type
certification basis in accordance with Sec. 21.17(b)(2).
Special conditions are initially applicable to the model for which
they are issued. Should the type certificate for that model be amended
later to include another related model that incorporates the same or
similar novel or unusual design feature, or should any other model
already included on the same type certificate be modified to
incorporate the same or similar novel or unusual design feature, the
special conditions would also apply to the other model.
Novel or Unusual Design Features
The PWC PW210S turboshaft engine will incorporate a novel or
unusual design feature which is a 30-minute AEO power rating, for use
up to 30-minutes at any time between the takeoff and landing phases of
a flight. This design feature is considered to be novel and unusual
relative to the part 33 airworthiness standards.
Discussion of Comments
Notice of proposed special conditions, Notice No. 33-10-02-SC for
the PW210S engine model was published on March 1, 2011 (76 FR 11172).
One comment letter was received. The commenter stated disagreement with
the special condition requirement of incorporating 25 hours of
operation at the 30-minutes AEO rating into the Sec. 33.87 test
profile. The commenter proposing taking credit for the 30-minute
periods run at takeoff rating that is part of the normal test profile
required by Sec. 33.87(b), thereby reducing the amount of test time at
the new 30-minute AEO rating. The FAA does not concur. The takeoff
rating and other normal use ratings are defined within 14 CFR part 1
and the associated requirements can be found in 14 CFR part 33 Takeoff
rating is limited in use to a continuous period of not more then 5
minutes during takeoff operations, which occurs each flight. The
existing Sec. 33.87 requirements are designed to demonstrate engine
durability for the takeoff rating which is considered a normal every
flight operation, and is independent of any other ratings The proposed
30-minute rating is not defined within 14 CFR, but has been
specifically requested by PWC. This new rating can be used for periods
of up to 30-minutes at any time during a flight for a variety of normal
mission purposes. Also, the number of usages during a single flight is
not limited; and its use does not require special maintenance actions.
So this rating is intended for normal mission use, similar to takeoff
and other normal use ratings, and is different than limited turboshaft
one-engine-inoperative (OEI) ratings. The OEI ratings for turboshafts,
with the exception of continuous OEI, are for limited use during a
flight and in some cases limited cumulative use. Therefore engine
durability using the 30-minute AEO rating must be demonstrated over and
above the takeoff rating and other normal use ratings included in the
rating structure. So the baseline for endurance testing will be Sec.
33.87(b) (no OEI rating). The FAA also
[[Page 40596]]
finds that the test time associated with the continuous OEI rating is
an appropriate baseline to define additional requirements for this new
normal use 30- minute AEO rating. Therefore, engine durability using
this rating must be demonstrated over and above the takeoff rating and
other normal use ratings included in the rating structure. No changes
to the special conditions have been made in this regard.
The commenter also states that the 25 hour requirement is
inconsistent with Sec. 33.87 philosophies, stating that time at any
rating validates any lower rating. This statement is incorrect. The
test requirements are established to demonstrate engine durability at
all normal and emergency ratings and associated limits. The test
profiles incorporate specific elements to this end. The normal ratings
all have individual elements that must be performed. The 30-minutes AEO
rating is a normal use rating that is expected to be used with a
frequency of occurrence similar to the takeoff or maximum continuous
ratings, and must have a specific and independent element as part of
the overall test. Also, the expectation is that 30-minute AEO will be
used far more frequently than any emergency 0E1 rating. These emergency
ratings must also be demonstrated (when applicable) however due to
their limited use, these elements of the test may overlap certain
normal rating elements found in the various test profiles. The practice
mentioned by the commenter is applied to OEI ratings only, because they
are rarely used and only in emergency situations. Therefore, the
frequency of occurrence for normal use ratings dictate that specific
test time be allocated to each rating, and that time can't be combined
because a rating is higher than another. No changes to the special
conditions have been made in this regard.
The commenter also states that the basis for 25 hours of required
run time was not described in the special condition. The 25 hours was
selected to be between the basic cumulative run time for takeoff rating
(18.75 hours) and maximum continuous rating (45 hours). This
requirement is weighted more heavily toward the takeoff time due to the
severe nature of the rating and intended operation. Therefore, no
changes to the special conditions have been made in this regard.
Applicability
These special conditions are applicable to the PWC PW210S turbo
shaft engine. If PWC applies later for a change to the type certificate
to include another closely related model incorporating the same novel
or unusual design feature, these special conditions may also apply to
that model as well, and would be made part of the certification basis
for that model.
Conclusion
We reviewed the available data, including the comment received, and
have determined that air safety and the public interest require
adopting this special condition with the changes described above. This
action affects only certain novel or unusual design features on one
model of engine. It is not a rule of general applicability, and it
affects only the applicant who applied to the FAA for approval of this
feature on the engine product.
List of Subjects in 14 CFR Part 33
Air transportation, Aircraft, Aviation safety, Safety.
The authority citation for these special conditions is as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701-44702, 44704.
The Proposed Special Conditions
Accordingly, the Federal Aviation Administration (FAA) issues the
following special conditions as part of the type certification basis
for the PWC PW210S turbo shaft engine.
1. PART 1 DEFINITION. Unless otherwise approved by the
Administrator and documented in the appropriate manuals and
certification documents, the following definition applies to this
special condition: ``Rated 30 Minute AEO Power'', means the approved
shaft horsepower developed under static conditions at the specified
altitude and temperature, and within the operating limitations
established under part 33, and limited in use to periods not exceeding
30- minutes each.
2. PART 33 REQUIREMENTS.
(a) Sections 33.1 Applicability and 33.3 General: As applicable,
all documentation, testing and analysis required to comply with the
part 33 certification basis, must account for the 30-minute AEO rating,
limits and usage.
(b) Section 33.4, instructions for continued airworthiness (ICA).
In addition to the requirements of Sec. 33.4, the ICA must:
(1) Include instructions to ensure that in-service engine
deterioration due to rated 30-minute AEO power usage will not be
excessive, meaning that all other approved ratings are available within
associated limits and assumed usage, for successive flights; and that
deterioration will not exceed that assumed for declaring a time between
overhaul (TBO) period.
(i) The applicant must validate the adequacy of the maintenance
actions required under paragraph (b)(1) above.
(2) Include in the airworthiness limitations section (ALS), any
mandatory inspections and serviceability limits related to the use of
the 30-minute AEO rating.
(c) Section 33.87, Endurance Test. In addition to the requirements
of Sec. Sec. 33.87(a) and 33.87(d), the overall test run must include
a minimum of 25 hours of operation at 30-minute AEO power and limits,
divided into periods of 30-minutes AEO power with alternate periods at
maximum continuous power or less.
(1) Modification of the Sec. 33.87 test requirements to include
the 25 hours of operation at 30- minute AEO power rating must be
proposed by the Applicant and accepted by the FAA.
(2) Each Sec. 33.87(d) continuous one-engine-inoperative (0EI)
rating test period of 30-minutes or longer, run at power and limits
equal to or higher then the 30-minutes AEO raring, may be credited
toward this requirement. Note that the test time required for the
takeoff or other OEI ratings may not be counted toward the 25 hours of
operation required at the 30-minute AEO rating.
Issued in Burlington, Massachusetts, on June 29, 2011.
Robert J. Ganley,
Acting Manager, Engine and Propeller Directorate, Aircraft
Certification Service.
[FR Doc. 2011-17298 Filed 7-8-11; 8:45 am]
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